Cathode Ray
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- เผยแพร่เมื่อ 28 พ.ย. 2018
- In today's video, we examine some of the properties of a cathode ray. :)
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You're back!
Haha yep! I just saw your raining tweet! :)
You‘re here!
I've missed this channel for quite a bit. It inspired me to do many projects. Glad your back!
MORE CRT videos, please! Small ones, big ones, all of them!
Welcome back, good to see another one of your great videos!
I thought you were dead!
Welcome back, nice video by the way
Wowwwwwwwwww I was really waiting for this ultimate guy.
I love you and you are my lifes motivation and teacher.
Happy to see you.
Finally! Thanks for sparing some of your time to make this amazing video! Just one question, what exactly is the B field?
thanks for coming back =. Awesome video
Excellent video! Loved seeing the crt's coil connected to a signal generator :)
great video. you were one of the people who introduced me to electrical engineering online, big fan. that's pretty neat
Never miss to amaze! Awesome video, man!
I've made the high voltage power supply from your video and it works!
JB Weld is also epoxy. But any epoxy (including JB Weld) besides the very fast setting ones work fairly to quite well. I've had long term issues with vacuum chambers due to the corona discharge UV breaking down the epoxy over time. Polyurethane adhesives have the same issue, but if applied thickly, are self shielding beyond about an eighth inch of depth. I use "Loctite premium construction adhesive" from a tube found at Wal-Mart. Slightly flexible, great for high temps (I've used it as a motor exhaust gasket), and gas/oil resistant if needed.
Welcome Back mate
And Im wondering if you can burn somthing with this thing it will be very cool!
Nice to see a new video! I almost thought to you happened what my parents think will happen to me.
Hey welcome back! Any thouht of exploring the science behind a cockroft-walton voltage multiplier?? Love the channel!
Hope all the is well. You’re an inspiration. Keep up the good work. Be safe.
I now love cathode rays. Awesome video! :D
One of the 3.4% of the subscribed channels for which I have notifications enabled
Great to see videos on CRTs. That looks like a projector CRT, you should be able to get a much brighter spot on the screen. For the electrostatic / electromagnetic deflection electron experiment an oscilloscope CRT may be better. The charged internal coating in your CRT will get in the way of the external charged plate preventing an induced internal charge. There is a Teltron educational tube for this experiment but great idea to use a standard CRT.
Awesome video thanks for uploading!
No flattery but, when I watch your videos, I ask myself,"Why in the world does this guy not have more than a million subscribers?" Man, your videos really does the work of breaking down phenomenons to their fundamental elements. Great work man😁. Love you work😘.
I liked the little CR history summary you gave at the beginning. It'd be awesome if there was a channel for that.
was worried the channel died! youre back! ;D
I've seen a lot of CRT builds and explanations and I think I've got somewhat of an understanding about them at this point. However, I don't think I'll ever understand how we were able to control it both so precisely and so quickly. The magnetic field in that thing must be going crazy, I'd love to see someone use that magnetic field-viewing film near the magnet while the CRT is in operation.
Very glad to see you back my friend! I was sad thought you fell off or life got to you.
Ive waited sooo long for a new video
When rebuild the wine bottle stuff again with a clear bottle, put a it of JB weld/glue to the bottom, and a bit of chalk powder. It might act as phosphor, and emit red light if I'm right. For white phosphor, use an old fluorescent tube, and scrape off the phosphor coating from the inside. Have phun!
Always look forward to your videos :)
Thank you
Ps, Could you please do a video on some of Sammy kamcar's inventions?
As always a great video!
YAY KEYSTONE IS BACK!!!!
Radiating yourself for a small amount of time is just fine
Good stuff man!
Holy shit, last semester I took a college course in (basic) elecetromagnetic principles, and that tool is so cool to demonstrate them. Consider making a video on maxwell equations and how they look in real life experiments as it might help a lot of students comprehend them. Also, great video, keep it up!
You're still the man. Good shit. Thank you.
Finally back in race ...great to see ...I would like you to give introduction to normalising wave equation.
2:34 wow your workbench is almost as dirty as mine...
nine volt battery lying around, check! pencil, check! a CD or two, check! soot from accidentally dropping molten steel onto my desk a lot... well, I guess that's a good thing not to have
it's been a long while
nice to see u
This made my day
I believe what you see is plasma discharge (like a neon tube) not quite a cathode ray tube. You need a deeper vacuum for that
Enjoyed 👍
Try next topic for LASER
A link!! Loved that
so cool, thank you!
Who told you "instantaneously" was not a word?
Whoops. I guess myself at 4:30 am this morning 😅
@@KeystoneScience It is ok. Many people get confused 10 minutes after 4:20.
Blazzzzzzzzze it
THE LEGEND IS BACK
getting flashbacks to physics 30. this is terrifying. lowest mark ever, still feel like I let my teacher down. calculating the acceleration of electrons between the cathode and anode. it hurts to know I can no longer do that. can't remember my formulas.to my teacher, Mr. Sosnowski, if you end up reading this, I am sorry. i dont know if you will remember me, but im the kid who always wore a coat, slept through most of your classes, and still admires you. out of anyone or anything, I feel that I failed you the most. you truely are an inspiration, and I promise to try to be better than I am, that all your effort not be wasted.
7:14 CORRECTION: it is coated in a PHOSPHOR, which the element Phosphorus is named after, due to phosphorus emitting light, BUT there are no phosphors that actually contain phosphorus. In my opinion, Phosphorus should be called "chemious" Because it doesn't even experience phosphorescence, only chemi-luminescence. But when they first discovered phosphorus and gave it the name, phosphorescence described the general 'Material emitting light', but today it is a specific definition of electrons falling.
Most often, that is zinc sulfide, doped with copper. And that can be made from Zinc metal reacting with hydrogen sulfide gas. That is the good old green oscilloscope CRT, which has a long trace burn as it stays. It's actually pretty simple to make that phosphor, by getting iron pills and mixing them with zinc dissolved in an acid. (Note, I am working on a project currently to do that. Have yet to try the experiment, so don't take my words to mean it is safe. Expect possibly Hydrogen Sulfide gas (Toxic) Hydrogen, and Oxygen gas (Explosive), or something I didn't notice.)
I'd double check all my facts, if you were to put this in a video, but I wanted to at least point out one common misconception.
Missed these videos:)))
Right on! 👍
Finally ! I missed you !
Each time I see a solar panel I do remember you XD
thank you !!! i wanted to make one of these in jr high.
The man is back !
Welcome back Keystone
People used to use photographic paper (do this still exist?) as a radiosensitive device to show x-ray emissions. It would be nice if you put something like this close to the crt tube as a way to demonstrate that. I've read that you can detect x-rays by covering a phone's camera with electrical tape.
Yes! The legend has finally returned!!!!
Hey man, I just watched your microwave gun vid. It was awesome!!! You're channel is great
Yesss! More videos!
Finally our genius back
Awesome a new vid!
That was beautiful! The color we saw when you were using the wine bottle....would it be the same if you you used a brown bottle or clear bottle?
Your homebrew crt was much more fun than the manufactured one! Thank you for your adventurous experiments!
You're awesome dude
MAKE A DEMO FUSOR!!! Farnsworth was also the inventor of this amazing device...
I'll leave a link in the description. Exactly my humor! xD
A large pickle jar with water on top as a target and a screw at the bottom gives some pretty nice effects.
Finally understand how a crt works!
Dope video
how did you adjust the voltage on the high voltage power supply?
great video :-)
ohh another video
Hi, I think teaching how to build a cloud chamber with peltier coolers and saturated isopropyl alcohol chamber would be very interesting. A better than the ones available in the Internet with detailed description including experiences with radioactive samples such tungsten and thorium rods and some minerals
Nice to see you again, Lazarus. How's college treating you? Taking up a lot of your time I bet.
Another instead video, thank you.
He's back.
I'm so glad you shaved the mustache. Also, glad to have you back.
Soo se you again after a long time
I’m gonna view this video a few more times for that ad rev
Hey..
If we have cfl 💡 bulb which internal terminal is not connected to each other.
Can we use this vacuum bulb instead of bottle ?
Finaly
To make a high voltage generator did you transferma for old tv
7:26 I read somewhere that fluorescent screen is coated with Zinc sulfide doped with copper/silver, right?
Yeah Awsome Video!!
Please make a video on magnetic confinement
John Logie Baird invented his first television 18 months before Farnsworth invented his first television.
Different types of television systems, and Farnsworth's was a definite improvement, but it wasn't the first.
Nice experiments! I would curious to see what would happen, if your homemade tube would be placed in a Tesla hairpin circuit inplace of the spark gap! What you think?
Holy shnikies he's back!
Welcome back.
Hey you should do a video about soil, I've heard it's really cool
Of course it cool in the winter.
@@KeystoneScience You mean it's *extra* cool in the winter
the evil genius is back
Long time...no seeeeee.😁
When will you upload your video on Tesla coil ( bigger version) ?
FINALLY !
How much pressure do you archieved?
do the double slit experiment!!
in the CRT, with electrons
When will you upload next video of this ?
After a very long time
Can you do an experiment for electron diffraction patterns or a double slit experiment with the electron and detect the pattern on the phophor dots using the cathode ray tube?
Haha, yes, it is coming soon, don’t worry ;)
@@KeystoneScience that's really great!! Thank you very much!!
Hey isnt a fluorescent light pretty much just a funky crt?
Excelente
could you make a glove that has 5 xenon bulbs(camera flash bulbs) that lay across the palm of your hand. and you can press a button and they turn on a flash one after another OR press another button and they all flash at once.
AND a video on how to make old time electrical ignited flash bulbs from the 70's ? please.
Designed to be a space drive. Could you look at a circuit that cycles a magnetic field cycling at 6000+ cycles a minute?
Dude, what part of PA are you from? I live in York county, just south of Harrisburg. I'm still building up my lab... 🙄
Hey i wonder if it would be posible to make a cathode ray ,in the vacuum of space,and maybe generate a elecrtical,or electro magnetic field on the bottom or whole ship and cause the space ship to slide across the cathode rays and in turn slide threw space???im not a scientist just a thought?
I'm sorry to say but you haven't made a cathode ray tube, but a geissler tube, you need a much much deeper vacuum than what you can get with even a good mechanical vacuum pump.. Cathode rays are invisible, what your looking at there is ionized gas, ie plasma, plus due to the poor vacuum and low voltage you also won't be producing any x-rays. Still a good video though
Que a mercury pump! ...Also, oof x3.
Oof x4
lol x1? XD
I believe he is producing x rays because of the fusion occuring on the cathode(the one closest to the end of the bottle or the yellow alligator clip)