The passion evident as she speaks is moving, and contagious. Now *I'm* excited about fusion projects like the National Ignition Facility (who are attempting the inertial confinement fusion w/ gold hohlraum approach described).
The whole lecture had me smiling and laughing (and almost understanding some of what she described) but Oh God! what a difficult and po-faced audience. Kate's enthusiasm nearly had me convinced we will have cheap clean energy in my lifetime. Except nobody will ever trade a million dollars for 20¢ It's interesting to see that the ELI-NP project managed 10 petawatts early in 2019, a hundredfold increase on the NIF in 2015. There's some work to do to get 10^25 watts by 2025...
@@carreg-hollt I do believe we'll have no choice but to switch to clean energy as our demands increase. It's either switch or die from the damage we do to the planet.
In my lab we are studying magnets with relatively high powered lasers (so the thing almost at the bottom of the diagram at 15:30 wich says HHG. Don't get me wrong: our pulses have the same energy as the combined German energy production, but notice that the scale is logarithmic). So we are basically studying duct tape with WD-40???
If you'd rather use chaotic incoherent broadband light for your light-matter interaction experiments, go right ahead. I'm using a laser. If you'd rather use a screwdriver as a chisel with a hammer to machine your parts, go right ahead. If you'd rather use a butter knife for woodworking projects, go right ahead.
Mesmerising lecture. To the critics - you get up there and give a one hour non stop lecture on your favourite subject from mostly memory. I dare you. Kate did that, while on camera for the BBC knowing it was going out not just to the audience but likely a million or so viewers too.
Add to that the fact that if she is anything like the typical person in the science/engineering fields, she may in fact be fairly introverted and finds the idea of speaking publicly spooky at a minimum. Many of us are not anything like what you see with Carl Sagan, Neil deGrasse Tyson, Bill Nye, and some others (or what BBT might have you think). It is one thing to stand in front of students, another to stand in front of your peer community, and then something far, far different to do it in front of the general public, being recorded and having who knows how many more view the talk several years later. Take your worst interview, multiply it numerous times and compress it down into a single interview, and that begins to describe the experience. She did wonderful in her presentation.
So.... was this lecture a last minute thing? I have no doubt that this scientist knows her stuff, and I was really looking to watch this and gain some knowledge of one of my favorite subjects. But her delivery is so uncomfortable, it comes across like she's doing someone else's lecture, and takes away from the material. I'd love to see an edited, non-live version of this, allowing her to retake any stumbling dialog. She is obviously so passionate and excited about her work, I just want to see it presented in it's best light. (No pun intended.)
I'm did quite understand what she was saying in regards to the lasers to a degree, but wish some of the attendees were more interactive with her. I congratulate her performance.
honestly i could go on for hours about multiple things lol :p atv's trucks parts tools metal fab off roadin in general engines circuit board design electronics psychology stereos i could go on for n hour on things i could on for n hour about :p im jus sayin i have alot of passions n can talk alot about them lol i didnt kno it was bein broadcast on bbc thats even more impressive
+Kenny Downs Definitely. The budget science gets in general is so tiny compared to other fields, e.g. military development etc. And this is due to lack of awareness/appreciation from the more general public.
Good lord, the critical tone in these comments is so silly! This was really interesting and fun to watch. There are as many critics saying it was too simple as there were saying it was too complex, which suggests to me that 1) it was just right and 2) people love to criticize strangers on the internet.
This was a excellent and informative video and I appreciate the people that took the time to record this event. Subscribed to this channel just from seeing this video. I know this is a older upload but I enjoy this kind of content and like to share with others.
@@laurens9561 I think you missed J S's joke. But I agree, I have seen RI performances that had better entertainment value. I mean "We all know what an atom is. [...] We all made of them." Erm... no. The vast majority of people in the world do not.
Around 1963 we had a school trip to the RI for a lecture on lasers, before most people had heard of them. We saw a ruby laser emit a pulse of infrared and burn some carbon paper. How things have changed in my lifetime!
"we pump the rod so it got at lot of stored energy.... so we pump pump pump the rod". i don't often laugh a lot at unintended inuendos, but this 1 got me.
+a It means exactly what I said. She seems like a pleasant gal. What is so hard about this? I'll dumb it down for you next time. Nice use of grammar, by the way. Let me guess...Harvard? Yale? Let me know when I'm getting warm.
Adam Bash Your grammar usage is not any better than mine. When you start a sentence, always capitalize the first letter of the first word. You forgot to capitalize 'i'll'.
+Adam Bash I thought exactly the same thing. Makes you shake your head in wonder when there are lovely, intelligent and interesting people like this in the world and yet millions of individuals(?) are obsessed with the Kardashians and people of that ilk.
I think any young person watching this will clearly understand Dr. Lancaster's excitement and enthusiasm for her work, and the fact that ultra intense lasers are astonishing instruments which open up astonishing possibilities in nuclear physics. For a lecture like this, in this context, what she delivered was EXACTLY what was needed. With her enthusiasm and joy in her work, how could she not inspire younger people, including young women, to get into scientific research? She so clearly loves it and has so clearly prospered in it. The people below who objected because they didn't find the lecture informative enough, or well organized - well, it was a short lecture about an incredibly complex field. It couldn't have been informative enough about the details of laser technology, no matter who gave the lecture. I found it very impressive.
She's as excited to talk about LASERs, as the electrons in the LASER are. I love when people are excited about science, engineering and math. I feel the same way.
I've just read some of the comments here and I must say that I am embarrassed for the folks who have to nit pick to find something to complain about. Nothing could be good enough for that type of people and I dare say they couldn't do any better than Dr. Lancaster int eh first place. Some of these folks just need to get a grip.
How smart was Maria Goeppert-Mayer eh? Really smart. As someone who spent many a post doc years working with femtosecond lasers, it was a great talk for the layman.
why is it that for every technical video on youtube there is always a plenitude of men standing in line to whip out there dicks and appraise the viewer of their own technical prowess? Speaking as a person of great experience in this phenomena, I am providing you with my (Unsolicited) opinion! LOVE ME DADDY!!
TheBeteljuice "it was a great talk for the layman." and the sentiment Maria Goeppert-Mayer is really smart. This equates to "men standing in line to whip out there dicks " for you? If it does I have to be honest and say your world model doesn't reflect reality.
I'm a hillbilly from the mountains of NC, I'm as far from a scientist as you can get, but I LOVE lasers and she did a fine job of explaining it!!! I even understood some of it ;-) Well done young lady!!!
Fusion science has progressed far beyond this talk in 2015 and now in Apr 2019 we have Tokomak Energy producing 15 million C without using lasers in a small scale-able reactor and will soon produce 100 million C. This would be the bottom end of temps necessary for a fusion reaction. Problem with these laser induced target fusion reactions is the destruction of the target in a burst of fusion. Target gone, fuel gone and reaction ends. The fuel is the same though so much is learned about fusion with these experiments. Kate's excitement and her understanding of these exotic physics is appreciated.
She is flat fired up and conveys it well; Kate presents in very relatable terms that can be understood by anyone, but if you understand lasers and physics, she broadly reveals the depth of her considerable knowledge and experience. Excellent presentation.
A smart person is one that can take a complicated subject and teach it to a layperson, something I read recently, and Kate can certainly do that. She had an audience of specialist in various sciences, plus a number of young people. The same with those watching her video. Who knew science could be humorous. I enjoyed that hour. Thankyou Kate.
Great talk. A lot of information here. My first job was for a company that made xenon lasers so I know about the partial mirrored end cap. They also bought YAG LASERs, a intense white light lamp that pumped a ruby crystal. They had a Q switch in them also. Cool stuff. That was in the late 70's
I love how Kate has conveyed this topic so enthusiastically. After working in academia, I've been exposed to people in the field that have so little drive, seeing somebody with the innate curious wonder that we all start with is so refreshing. Fun talk.
Using the spectrometer on the white light, you could see that it has the characteristics of an white led. There's a large peak at blue and a broader peak for the phosphor which absorbs some of the blue and re-emits a yellowish light. The combination of the two appears to us as white.
Possibly. But it's also possible it was a halogen incandescent bulb. We would need to see the wavelength scale to know if it was anything near a black body.
One day, scientists like her who have worked hard all their lives in getting fusion correct are going to celebrate their success. The remarkable success is going to accelerate humanity into a clean and livable future and 10 billion people are going to simply take it for granted. These people are among the real heroes of humanity.
There's not a script anywhere, so she's teaching from memory, plus she's got 20/20 vision...
5 ปีที่แล้ว +1
@ She keeps glancing down, but she is most often facing and looking straight forward when she does it. The laptop on the desk is significantly off to the right. She is only looking at the laptop when she is manually switching between slides and when she refers to a slide. At 15:55 and 18:48 she steps back and you can clearly see the laptop has the slide that is up on the screen displayed with no other windows open. It appears that the laptop is only for slide generating, so she is actually running the display for her talk while she does it. It probably helps her keep her place, but she is basically doing the presentation from memory.
For someone like me who follows a lot of science this was great ! I appreciated how it wasn't dumbed down too much at the end like so much material is otherwise. She had a lot to cover which constrained what she could do.
This woman is showing us the future. Her enthusiasm is infectious. Note how she never says a bad word about anyone or anything. I wish I had friends like her in my life. Yes, I would be the dumbest person in the room every time but it would be worth it.
Not sure why people are criticizing her, it was a good talk with something interesting for both laypersons and experts in the field. Sure, she is not the most charismatic speaker on earth, but overall she succeeded in delivering the intended message. What I found very interesting is that she seemed more comfortable while explaining the more technical slides later in the talk compared to the earlier, more basic slides.
One thing I love is to have my brain stimulated with such great subject. Even if it was posted in 2015, that's one great presentation on Lasers and nice to watch even in 2019.
Dr. Kate Lancaster; Professor Emeritus Ali Javan of MIT, shortly after 1958, then with Bell Laboratories, submitted his paper on Gas Discharge Helium Neon Laser for publication. And published 1960. Professor Javan's invention, was the World's First Continuously Operating Laser. He graduated from Alborz high School. Consequently, he was at Columbia University, before becoming a professor at MIT. Later, he was given the greatest honor of Emeritus.
Wow... just - wow... This is an hour well spent. An interesting subject, explained by an enthousiastic speaker, who knows what she's on about AND doesn't hurt on the eyes or the ears - Thank you!
Interesting that exciting something can cause it to do a stimulated emission. Pumping the rod as she describes would be a sure way to cause it, I am sure. In fact this whole presentation is remarkable as being full of such notions.
It's one thing to know stuff, quite another to explain it to others. Kate clearly knows her stuff but needs to overcome her nervousness during some elements of the presentation. That I'm sure will come with practice. Otherwise a great lecture from the Ri and Kate has a very attentive voice which is a pleasure to listen too.
Great review of Bleeding-Edge Lab work. Skip past16mins ,which is Lasers 101. Then it gets really good, fast! No mention of deployed large scale lasers, such as Russia's 80's ground based anti-satellite or China's new super lasers of similar purpose. The USA's PPCs use a really powerful laser to tunnel the atmosphere ahead of the particle. Those three might be included in a different overview scope. Kate's own energy is probably in the Giga-Joules level too!
The beryllium sphere has fractured under stress. You broke the bloody ship...We need a new beryllium sphere. Computer is there a spare one? Negative, there is no reserve beryllium sphere exists onboard.
I swear I came here just for the Lasers but instead got treated with a show where A Grown Lady teaches a kid how to put on a rubber balloon on his pump, rather awkwardly and then she helps him pump it up twice, which took a while and under her guidance the Kid finally popped her Balloon :) no offence to anyone but I just couldn't help it LOL
10:40 To all flat-earthers out there, this is the experiment that should ring a bell as to why you can see objects that are supposed to be behind the horizon. Except in the 'curvature of the earth' problem, it's not a little stream of water, but the propagation of light by the water vapor (+mineral ions) in the air, hanging over oceans and land. An optical mechanic further strengthened by a 'dominant' average and approximate orientation of said molecules in the droplets, because of atmospheric pressure, the magnetic field of the earth and gravity.
1. You begin by using a weaponized word. Not cool. 2. You may want to do some digging before off the cuff denials of a system demonstrated to be in use. 3. th-cam.com/video/kSNjc_ux89c/w-d-xo.html 4. When the U.S. (or any government for that matter) announces a proposed operation, we know from history that it's already in use. @@nebtheweb8885
Very clever science and engineering here. One thing troubles me, a great deal. Lets suppose that we do manage to "create" fusion energy on a global, safe, clean and practical manner- At low economic and environmental costs, with no dangerous wastes. This would be a huge boost to human development, a total change of paradigm and narrative- With cheap wholesome energy everything changes, even food resources will become more accessible. Would not this boost also propel us faster to over population and practical entropy ? If we have everything, food, energy, but just one planet, would not this innovation become malignant almost immediately? I used the cancer analogy because this is exactly what tumors are- Pockets of total success, negative entropy, in a universe of natural entropy. Oh, and going to other planets wont help, there are relativistic issues . For one thing we can throw engineering at fusion energy and find solutions, but what can we throw at cosmic distances ?
I thought this was a great vid. Dr. Lancaster clearly A: is an expert in her field, B: loves her field, C: is also an expert at presenting the material in such a way that both show clearly, yet with modesty and humor as well. Well done, Dr. Lancaster!
Clearly she has a orientation disorder. I had to stop listening. After the third "behind you" Stop, it's "behind me." Careful around her when she's handling a laser. You just might wind up behind yourself. Now in light of that humor, I just might try and listen again
yeah it makes the whole thing less coherent and breaks ones train of thought if you´re trying to learn something new that´s a really bad thing. had to rewind from time to time. a little more practice in public speaking would definively help before making/letting her do a RI lecture.
For gods sake man. She does not need to be your usual brainless TV presenter reading from a teleprompter. She is just a regular person that is good at science.
Well I, for one, appreciate people who make lectures like this.
The passion evident as she speaks is moving, and contagious. Now *I'm* excited about fusion projects like the National Ignition Facility (who are attempting the inertial confinement fusion w/ gold hohlraum approach described).
Yeah, the balloon demonstration was astounding, stunning. All in all not a lot here.
A girl talking about laser? I am out of here.
I hope this institution also makes a video on algae biofuel!
Kate teaches mathematics to first year physics students at York uni. We love her! She’s so funny and lovely.
The whole lecture had me smiling and laughing (and almost understanding some of what she described) but Oh God! what a difficult and po-faced audience. Kate's enthusiasm nearly had me convinced we will have cheap clean energy in my lifetime. Except nobody will ever trade a million dollars for 20¢
It's interesting to see that the ELI-NP project managed 10 petawatts early in 2019, a hundredfold increase on the NIF in 2015. There's some work to do to get 10^25 watts by 2025...
@@carreg-hollt I do believe we'll have no choice but to switch to clean energy as our demands increase. It's either switch or die from the damage we do to the planet.
I hate you Berenice... ;)
Berenice L Waves cream pie videos
Can't believe I just found this, I was in the same lectures last year
My feeling that any problem can be fixed with more lasers and more magnets has been reinforced by this video, thank you.
LOL
In my lab we are studying magnets with relatively high powered lasers (so the thing almost at the bottom of the diagram at 15:30 wich says HHG. Don't get me wrong: our pulses have the same energy as the combined German energy production, but notice that the scale is logarithmic).
So we are basically studying duct tape with WD-40???
and a ball peen hammer
If you'd rather use chaotic incoherent broadband light for your light-matter interaction experiments, go right ahead. I'm using a laser. If you'd rather use a screwdriver as a chisel with a hammer to machine your parts, go right ahead. If you'd rather use a butter knife for woodworking projects, go right ahead.
Ry P
Don’t forget duck tape :)
The best application for lasers is using them as laser pointers in a presentation about lasers.
John Hunter Haha, thumbs up x 9000!
John Hunter I'd use a 10^15 Watts Laser Pointer in a Presentation about a 1 Watt Laser
Psyychopatt your user name checks out.
And, burn a hole in the blackboard...lol
No, the best application for lasers is driving cats insane!
I love this lecture. She is very human even as she is also very expert.
Mesmerising lecture. To the critics - you get up there and give a one hour non stop lecture on your favourite subject from mostly memory. I dare you. Kate did that, while on camera for the BBC knowing it was going out not just to the audience but likely a million or so viewers too.
Add to that the fact that if she is anything like the typical person in the science/engineering fields, she may in fact be fairly introverted and finds the idea of speaking publicly spooky at a minimum. Many of us are not anything like what you see with Carl Sagan, Neil deGrasse Tyson, Bill Nye, and some others (or what BBT might have you think). It is one thing to stand in front of students, another to stand in front of your peer community, and then something far, far different to do it in front of the general public, being recorded and having who knows how many more view the talk several years later. Take your worst interview, multiply it numerous times and compress it down into a single interview, and that begins to describe the experience. She did wonderful in her presentation.
So.... was this lecture a last minute thing? I have no doubt that this scientist knows her stuff, and I was really looking to watch this and gain some knowledge of one of my favorite subjects. But her delivery is so uncomfortable, it comes across like she's doing someone else's lecture, and takes away from the material.
I'd love to see an edited, non-live version of this, allowing her to retake any stumbling dialog. She is obviously so passionate and excited about her work, I just want to see it presented in it's best light. (No pun intended.)
Ruth Moreton
No critic, but that is exactly what teachers (on any level) are paid for. It is called teaching. Kate did a good job!
I'm did quite understand what she was saying in regards to the lasers to a degree, but wish some of the attendees were more interactive with her. I congratulate her performance.
honestly i could go on for hours about multiple things lol :p atv's trucks parts tools metal fab off roadin in general engines circuit board design electronics psychology stereos i could go on for n hour on things i could on for n hour about :p im jus sayin i have alot of passions n can talk alot about them lol i didnt kno it was bein broadcast on bbc thats even more impressive
She’s so wonderfully geeky and just a bit awkward that she comes across as really personable. Love it. :)
Great talk. If people would spent half the time they spend watching reality shows on education like this the world would be a better place.
+Kenny Downs Definitely. The budget science gets in general is so tiny compared to other fields, e.g. military development etc. And this is due to lack of awareness/appreciation from the more general public.
Then, perhaps, Americans would elect a scientist for president? Sounds like a plan to me.
So called "reality" TV, which has been shown to have been manipulated a number of times.
Come on? Kardashians or Lasers? Gotta get your priorities right
@@mikelouis9389 Maybe just a public relations professional with a doctorate in social engineering...
Good lord, the critical tone in these comments is so silly! This was really interesting and fun to watch. There are as many critics saying it was too simple as there were saying it was too complex, which suggests to me that 1) it was just right and 2) people love to criticize strangers on the internet.
Exactly. Walk 1.60934 km in a person's shoes.
People are inherently fearful of high intelligence thus they desperately try to demean someone who is as smart as she is.
No the problem is both oversimplification and not enough simplification (for what seems to be her target audience)
23:36 "Mega-Amp" and "Giga-Gauss" (100.000T) gives me shivers on my back!
WASTED ON THOSE THAT DON'T UNDERSTAND PHYSICS- GOOD JOB! enjoyed it!
This was a excellent and informative video and I appreciate the people that took the time to record this event. Subscribed to this channel just from seeing this video. I know this is a older upload but I enjoy this kind of content and like to share with others.
A true scientist, nothing less
@OldAgitator she is way more
Tough audience. I like her quarky jokes.
"Quarkey"? Are you positron that's the correct word?
Were there jokes in there? I thought it was awkward a lot of the times. "My sister is laughing" ?? Implying that everyone should laugh? At what?
@@laurens9561 I think you missed J S's joke. But I agree, I have seen RI performances that had better entertainment value. I mean "We all know what an atom is. [...] We all made of them." Erm... no. The vast majority of people in the world do not.
Seriously, that audience was stoic. She tried so hard to soften them up, but nope.
@@nicholasadams2374
She wasn't tremendously funny.
Around 1963 we had a school trip to the RI for a lecture on lasers, before most people had heard of them. We saw a ruby laser emit a pulse of infrared and burn some carbon paper. How things have changed in my lifetime!
"we pump the rod so it got at lot of stored energy.... so we pump pump pump the rod". i don't often laugh a lot at unintended inuendos, but this 1 got me.
Erik van der Bijl Then we switch the cavity.
It was the excited emissions that got me.
she also screams when it blows
Good laugh thanks lol
"We'll get there eventually. Keep going, we need to get to a certain good size."
i'll bet she's the world's nicest co-worker.
+Adam Bash da faq does dat even mean?
+a It means exactly what I said. She seems like a pleasant gal. What is so hard about this? I'll dumb it down for you next time. Nice use of grammar, by the way. Let me guess...Harvard? Yale? Let me know when I'm getting warm.
Adam Bash
Your grammar usage is not any better than mine.
When you start a sentence, always capitalize the first letter of the first word.
You forgot to capitalize 'i'll'.
+Adam Bash I thought exactly the same thing. Makes you shake your head in wonder when there are lovely, intelligent and interesting people like this in the world and yet millions of individuals(?) are obsessed with the Kardashians and people of that ilk.
+LOSS444 i couldn't agree more.
Thank you Kate for a very interesting talk.
36:43 "We know a lot about how to make it not work." About 70 years! Such a lovely lecture.
I think she's brilliant!
She is fantastic, isn't she??!??
I think any young person watching this will clearly understand Dr. Lancaster's excitement and enthusiasm for her work, and the fact that ultra intense lasers are astonishing instruments which open up astonishing possibilities in nuclear physics.
For a lecture like this, in this context, what she delivered was EXACTLY what was needed. With her enthusiasm and joy in her work, how could she not inspire younger people, including young women, to get into scientific research? She so clearly loves it and has so clearly prospered in it.
The people below who objected because they didn't find the lecture informative enough, or well organized - well, it was a short lecture about an incredibly complex field. It couldn't have been informative enough about the details of laser technology, no matter who gave the lecture.
I found it very impressive.
Time flew by so fast!
Dr. Lancaster gave a great presentation.
Love these lectures. The ability to see this when I otherwise could not be present in those classes is excellent.
Very good lecture considering her nerves, It doesn't help with the stale audience. I thoroughly enjoyed the talk!
All that stuff is absolutely amazing, refreshing change from most heavy mathematical talks about science
She's as excited to talk about LASERs, as the electrons in the LASER are. I love when people are excited about science, engineering and math. I feel the same way.
I've just read some of the comments here and I must say that I am embarrassed for the folks who have to nit pick to find something to complain about. Nothing could be good enough for that type of people and I dare say they couldn't do any better than Dr. Lancaster int eh first place. Some of these folks just need to get a grip.
Welcome to....... the internet!
TheRjjrjjr complicated stuff is hard. Plus she mentioned nothing about a death-star.
Thank you for your fastenating lecture,But thank you as well for the warmth and the chear with which you presented it.
Is there anything more enjoyable to watch than someone speaking passionately about what they love, fantastic lecture !
Smart is Sexy
++++++++++++++ !
Kate, Now that NIF has reached ignition, I’m hoping you will be updating your lecture on high density lasers and fusion physics. Thank you, Dr.P.
How smart was Maria Goeppert-Mayer eh? Really smart. As someone who spent many a post doc years working with femtosecond lasers, it was a great talk for the layman.
why is it that for every technical video on youtube there is always a plenitude of men standing in line to whip out there dicks and appraise the viewer of their own technical prowess? Speaking as a person of great experience in this phenomena, I am providing you with my (Unsolicited) opinion! LOVE ME DADDY!!
TheBeteljuice "it was a great talk for the layman." and the sentiment Maria Goeppert-Mayer is really smart. This equates to "men standing in line to whip out there dicks " for you? If it does I have to be honest and say your world model doesn't reflect reality.
I'm a hillbilly from the mountains of NC, I'm as far from a scientist as you can get, but I LOVE lasers and she did a fine job of explaining it!!! I even understood some of it ;-) Well done young lady!!!
No, you're a "Tar Heel"... Hillbillies are from West Virginia.
LOL
I lived in both states, and have family in both. (Born and raised in WV)
decent video goes somewhat into degree level optoelectronics, much more clearly presented than in my lectures..
Thanks Dr. Kate Lancaster for this valuable lecture!
For me this was the most exciting one hour in lots of years. Thank you Kate Lancaster for this great talk.
I think i may have found one of the best parts of youtube :)
+Kondicykel "TED Talks"
+brun "edEX"
Fusion science has progressed far beyond this talk in 2015 and now in Apr 2019 we have Tokomak Energy producing 15 million C without using lasers in a small scale-able reactor and will soon produce 100 million C. This would be the bottom end of temps necessary for a fusion reaction. Problem with these laser induced target fusion reactions is the destruction of the target in a burst of fusion. Target gone, fuel gone and reaction ends. The fuel is the same though so much is learned about fusion with these experiments. Kate's excitement and her understanding of these exotic physics is appreciated.
She is flat fired up and conveys it well; Kate presents in very relatable terms that can be understood by anyone, but if you understand lasers and physics, she broadly reveals the depth of her considerable knowledge and experience. Excellent presentation.
A smart person is one that can take a complicated subject and teach it to a layperson, something I read recently, and Kate can certainly do that. She had an audience of specialist in various sciences, plus a number of young people. The same with those watching her video. Who knew science could be humorous. I enjoyed that hour. Thankyou Kate.
Great talk. A lot of information here. My first job was for a company that made xenon lasers so I know about the partial mirrored end cap. They also bought YAG LASERs, a intense white light lamp that pumped a ruby crystal. They had a Q switch in them also. Cool stuff. That was in the late 70's
I love how Kate has conveyed this topic so enthusiastically. After working in academia, I've been exposed to people in the field that have so little drive, seeing somebody with the innate curious wonder that we all start with is so refreshing. Fun talk.
Using the spectrometer on the white light, you could see that it has the characteristics of an white led. There's a large peak at blue and a broader peak for the phosphor which absorbs some of the blue and re-emits a yellowish light. The combination of the two appears to us as white.
Possibly. But it's also possible it was a halogen incandescent bulb. We would need to see the wavelength scale to know if it was anything near a black body.
As a non-scientist I found this talk fascinating. I now have a (somewhat) clearer understanding of the field. Thank you very much.
Great, really interesting and I like the enthusiasm :)
What a fantastic speaker and lecture.
You are a rock star. Thank you for the great content!
The picture you see behind you is also in front of you and is larger and easier to see and you don't have to turn around to see it.
One of the best lectures in your channel.
Wow, thanks for this wonderful explanation of lasers and fusion.
One day, scientists like her who have worked hard all their lives in getting fusion correct are going to celebrate their success. The remarkable success is going to accelerate humanity into a clean and livable future and 10 billion people are going to simply take it for granted. These people are among the real heroes of humanity.
There's not a script anywhere, so she's teaching from memory, plus she's got 20/20 vision...
@ She keeps glancing down, but she is most often facing and looking straight forward when she does it. The laptop on the desk is significantly off to the right. She is only looking at the laptop when she is manually switching between slides and when she refers to a slide.
At 15:55 and 18:48 she steps back and you can clearly see the laptop has the slide that is up on the screen displayed with no other windows open.
It appears that the laptop is only for slide generating, so she is actually running the display for her talk while she does it.
It probably helps her keep her place, but she is basically doing the presentation from memory.
@ Her slide presentation is on the laptop.
For someone like me who follows a lot of science this was great ! I appreciated how it wasn't dumbed down too much at the end like so much material is otherwise. She had a lot to cover which constrained what she could do.
Thank you Ri for another great video!
This woman is showing us the future. Her enthusiasm is infectious. Note how she never says a bad word about anyone or anything. I wish I had friends like her in my life. Yes, I would be the dumbest person in the room every time but it would be worth it.
Love her presentation, she is great.
I absolutely love listening to people speak on the things they're passionate about!
She is amazing. That is all.
I think I am in love...what a great presentation!!
Not sure why people are criticizing her, it was a good talk with something interesting for both laypersons and experts in the field. Sure, she is not the most charismatic speaker on earth, but overall she succeeded in delivering the intended message. What I found very interesting is that she seemed more comfortable while explaining the more technical slides later in the talk compared to the earlier, more basic slides.
One thing I love is to have my brain stimulated with such great subject. Even if it was posted in 2015, that's one great presentation on Lasers and nice to watch even in 2019.
As long as there is no stimulated emission you should be alright lol
I hope I'm not the only one to giggle when she says stimulated emission in the excited state. I know, I'm a child lol
"Pump pump pump pump the rod" ( ͡° ͜ʖ ͡°)
So you are really pumped up ? :-)
She is really good Kate I recall her lecture on Quantum Dots a few years ago. She is definitely has a spot on my dinner table! Brilliant!
She came to my sixth form and did a talk about lasers in front of the whole physics department, including teachers and students.
Obviously you beaten the rest of us your lucky because you had the chance to ask questions.
Dr. Kate Lancaster; Professor Emeritus Ali Javan of MIT, shortly after 1958, then with Bell Laboratories, submitted his paper on Gas Discharge Helium Neon Laser for publication. And published 1960. Professor Javan's invention, was the World's First Continuously Operating Laser. He graduated from Alborz high School. Consequently, he was at Columbia University, before becoming a professor at MIT. Later, he was given the greatest honor of Emeritus.
Don't look down the laser beam with your remaining eye.
LOL
I have a sign in my workshop that reads " Caution - do not stare into big scary laser with remaining eye"
Excellent talk and presentation, Dr Kate. Great work done and no doubt more to come.
Wow... just - wow...
This is an hour well spent.
An interesting subject, explained by an enthousiastic speaker, who knows what she's on about AND doesn't hurt on the eyes or the ears - Thank you!
What a great lecture and a terrific host. Love her London accent ! Thank you RI
Interesting that exciting something can cause it to do a stimulated emission. Pumping the rod as she describes would be a sure way to cause it, I am sure. In fact this whole presentation is remarkable as being full of such notions.
😄
Hey, Jeremy. It's you isn't it?
@@ulicadluga Nope.
Ejaculation?
Love to see this Dr. Lancaster in an excited state ;)
Very nice video and lecture, enjoyed it so much. Thank you.
"tiny little laser pointers" Don't count out us in the laser hobby world ; )
The algorythm hits again. I love practical physics and engineering lectures.
I'm officially a nerd, as I totally enjoyed the lecture even though I understood maybe half of what was said.
danny sulyma no you're not.
Officially? I doubt it. Lemme see your registration card.
A nice presentation!! Its a fine line to educate, and possibly give away important, and highly regarded data of functionality...WELL DONE!
It's one thing to know stuff, quite another to explain it to others. Kate clearly knows her stuff but needs to overcome her nervousness during some elements of the presentation. That I'm sure will come with practice. Otherwise a great lecture from the Ri and Kate has a very attentive voice which is a pleasure to listen too.
Peter Dawes YOU have no contribution to info about FUSION, YOUR OPINION IS IGNORANT
Great review of Bleeding-Edge Lab work. Skip past16mins ,which is Lasers 101. Then it gets really good, fast!
No mention of deployed large scale lasers, such as Russia's 80's ground based anti-satellite or China's new super lasers of similar purpose. The USA's PPCs use a really powerful laser to tunnel the atmosphere ahead of the particle. Those three might be included in a different overview scope.
Kate's own energy is probably in the Giga-Joules level too!
So my question is why can't school be exciting like this?
Finally a lecture that's not dumbed-down and aimed at Gcse school kids!
Rofl galaxy quest was right to. They're using a beryllium sphere!
The beryllium sphere has fractured under stress. You broke the bloody ship...We need a new beryllium sphere. Computer is there a spare one? Negative, there is no reserve beryllium sphere exists onboard.
Never give up, never surrender.
Where did you guys get these lines from?
The "Historical Documents"?
"Oh, those poor people..."
Shes got such an enthusiasm for the subject, it just rubs off, an inspires others to get excited! Well done Kate!
I swear I came here just for the Lasers but instead got treated with a show where A Grown Lady teaches a kid how to put on a rubber balloon on his pump, rather awkwardly and then she helps him pump it up twice, which took a while and under her guidance the Kid finally popped her Balloon :) no offence to anyone but I just couldn't help it LOL
10:40 To all flat-earthers out there, this is the experiment that should ring a bell as to why you can see objects that are supposed to be behind the horizon. Except in the 'curvature of the earth' problem, it's not a little stream of water, but the propagation of light by the water vapor (+mineral ions) in the air, hanging over oceans and land. An optical mechanic further strengthened by a 'dominant' average and approximate orientation of said molecules in the droplets, because of atmospheric pressure, the magnetic field of the earth and gravity.
Tough crowd
...and dead
LondonDisperses I
I wonder if she has a sister? ❤️
Kate is an amazing scientist, and very good communicator. Amazing talk--thanks!
And, of course, always a dark side to any invention - the military laser weapons from planes, etc. to directed energy weapons.
Ah, a conspiratard. Lol, you would need to carry around a powerplant in order to generate that kind of power to generate the energy on the fly.
1. You begin by using a weaponized word. Not cool.
2. You may want to do some digging before off the cuff denials of a system demonstrated to be in use.
3. th-cam.com/video/kSNjc_ux89c/w-d-xo.html
4. When the U.S. (or any government for that matter) announces a proposed operation, we know from history that it's already in use.
@@nebtheweb8885
Thanks Dr. Kate Lancaster for delivering this lecture
Files under “Good waves” ;)
Very clever science and engineering here.
One thing troubles me, a great deal.
Lets suppose that we do manage to "create" fusion energy on a global, safe, clean and practical manner- At low economic and environmental costs, with no dangerous wastes.
This would be a huge boost to human development, a total change of paradigm and narrative- With cheap wholesome energy everything changes, even food resources will become more accessible.
Would not this boost also propel us faster to over population and practical entropy ?
If we have everything, food, energy, but just one planet, would not this innovation become malignant almost immediately?
I used the cancer analogy because this is exactly what tumors are- Pockets of total success, negative entropy, in a universe of natural entropy.
Oh, and going to other planets wont help, there are relativistic issues . For one thing we can throw engineering at fusion energy and find solutions, but what can we throw at cosmic distances ?
Kate: You are beautiful, intelligent, and articulate! Just RELAX, BREATHE, and let people see the real Kate. Love and Peace to you!
She is so enthusiastic, it was a pleasure to listen to her. Thanks very much!
can not help but asume that she thinks that the audience is looking in the same direction as her point of view
Yes that was amusing. She clearly has a genius level IQ yet made the same type of mistake we knuckle draggers would make.
Jerry Zakariasen she kept saying "behind you" when she should have said "behind me"
The best !! Took me back to high school physics and filled in the gaps to the present. Excellent presenter Ms. Lancaster
"neutron stars [...] some of the most extreme conditions on Earth" - I think it's a little more wide-ranging than that, Dr Lancaster.
Great talk and impressive level of enthusiasm ;)
...times it by an extremely large number... you get lots of energy.
Well that's my physics degree in the bag, then, thanks.
I thought this was a great vid. Dr. Lancaster clearly A: is an expert in her field, B: loves her field, C: is also an expert at presenting the material in such a way that both show clearly, yet with modesty and humor as well.
Well done, Dr. Lancaster!
Clearly she has a orientation disorder. I had to stop listening. After the third "behind you" Stop, it's "behind me." Careful around her when she's handling a laser. You just might wind up behind yourself. Now in light of that humor, I just might try and listen again
We pump pump pump the rod, then we switch the cavity. Then we get an extreme burst. Wait what are we talking about again?
LOL. Kate inspires that kind of thoughts with her beautiful body yeah
Keep going... we need to get to a good size... right... now hold that... pull it slightly up... keep going... keep going!.... *screams*
New to this field, you made it very easy to understand. Thanks
nice but a little nervous
yeah it makes the whole thing less coherent and breaks ones train of thought if you´re trying to learn something new that´s a really bad thing. had to rewind from time to time. a little more practice in public speaking would definively help before making/letting her do a RI lecture.
For gods sake man. She does not need to be your usual brainless TV presenter reading from a teleprompter. She is just a regular person that is good at science.
Symmetrie Bruch yea I'm sure it was her sounding nervous and not you just being slow
Thank you Dr. Kate Lancaster!
Great talk, it's good to see successful women in science.
Thank you Dr Kate Lancaster for your well presented lecture...
YVO