Biography of Coulomb and his Equation
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- เผยแพร่เมื่อ 23 เม.ย. 2020
- How did Charles Coulomb create his famous equation without losing his head? Watch this video and find out!
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www.patreon.com/user?u=15291200
The music is from the awesome Kim Nalley of course www.KimNalley.com and is her version of "Electricity, Electricity" from the fab people at schoolhouse rocks: • Video
The video of the twitching torsional machine is from the Universite de Rennes 1: • Coulomb invente une ba...
I recently learned how they determine the mass of an astronaut in zero-G to evaluate if they are gaining or loosing body tissue. And it is odd, but the technique is basically what Coulomb was doing to determine the weight (mass) of an object back in 1785. Thanks Kathy, love the videos as always.
Count Dracula that is funny. I’m imagining astronauts complaining about being on twisting machines.
Where do science come from and why people go investigate such arcane things is a lifelong quest of mine. Gregor Johann Mendel was one of my first science heroes from my own field and the fact that his pea experiments was actually a part of Prussian plat breeding program gave me a clue.
Like every other ordinary guy my "investigation" went to an infinite pause after my graduation. Thanks, Kathy, your channel fulfills part of my dream of understanding the source of science.
Wow! I never knew that Coulomb discovered the relationship between Hooke’s law of linear forces to be similar to twisting forces. His discoveries of static electricity are incredible, and I never saw these connections until I saw this video. Thank you!
Big fan of your videos. It's amazing to find out how scientists stumble upon different problems and used their knowledge to solve other related situations.
Here's someone I never expected to be this cool! What an absolute lad
Alpaca I love that expression- can I say “what a lad” or am I too American for that?
@@Kathy_Loves_Physics im not british nor american my brain is just poisoned by the internet. Take it, the cops cant do anything about it
A big thumbs up for the extraordinary effort in telling these stories.
This video was so informational! Thank you for all the work you put in!
Thank you for sharing! I didn’t even know who Coulomb was until I watched your video. I didn’t know he created a machine to view static electricity. I really appreciate you explaining what he did and how he was helpful for history. Thank you again!
Wow wee!! What a ride.
TY Teacher. 🍎
So much historical information in your presentations.
I am not gonna lie this viedeo was really informativ. I did much research on coulomb and many of those things which you did told are not foundable in the normal internet. Its nice to get this extra information for my presantation
wow, thANKs Kathy for such amazing research!! still remember back in 60 was 8, a teacher at school showed us how to magnetize a needle w. another magnet and how it could be used to make a compass, back at home, magnetized a sewing needle with a magnet from a speaker, and suspended it WITH A SINGLE FILAMENT I TOOK OUT OF OF A SEWING CORD, it worked so well so to finish it put it in an aluminium box cut out of a PARATHION container ( yes I lived in an apple orchard) end of the short story: became a successful EE working in hi tech MRI´s.. still alive :))
Excellent presentation ,knowledge and humor!! What a lady !!!!
If somehow in Greece
delighted to meet !!
Best, Stefan, Athens,Greece
I would be delighted to meet you if I ever get to Greece. I have never been and it is on my bucket list (meaning my list of things I want to do before I die).
You explain things so well. Thank you.
this was so amazing... i really appreciate your work... it helped regain interest in what i was studying
I very much enjoy your videos and all the sign language. The history of science is essential learning.
I love your videos! its interesting to watch. Thank you so much!
Love your videos!!! Here's an idea. A new video tracing ideas in static electricity from Coulomb up to Benjamin Franklin's unfortunate choice of which kind to call positive and which negative. It would differ from your other videos in tracing an idea rather than a single person.
I enjoyed every word!
Thank you!
Excellent. Well done.
Terrific story And the humanity in it was fantastic. Just imagine being of not quite the write status, Constantly pushed about by the whims of others and the luck of the draw., Persevering even despite the french revolution, Gaining a high position and then dying two years later.
Your videos are unique and briljant.
Great video. For me personally, as someone who studied engineering (decades ago) it was clearly explained and I felt I could understand (or already knew) every bit of the mathematics and history, which is nice for me. On the other hand, I have watched some of Kathy’s videos on early 20th cent physicists, and while interesting, a lot just goes over my head, and or not clearly explained how one step leads to the next. Perhaps that is just me.
I’m sorry to hear that some of my other videos went over your head. You might have an easier time if you start with the earlier videos and then watch how the science progresses over time.
@@Kathy_Loves_Physics Hi Kathy, your videos are great. No need to apologise. I wasn’t intending to criticise, although it came out that way. I could have chosen better words.
Such a great video! It's quite extraordinary how Coulomb invented the most precise measuring device! I had no idea that it was able to measure a degree on the scale to the weight of 1/100,000th of a grain of sand. That is quite mind blowing!
Glad you liked it!
Great review ! From all of the historical info I came across, I'm still looking for references on how the Coulomb value was determined, on what may hold a Coulomb of charge. Any idea ?
HortiMax I struggled with that too as far as I can tell they got the permittivity of free space and then got coulombs constant from that. My guess is that ampere got the first number in the 1830s and that German scientists got more accurate numbers in the 1840s. But I am having a heck of a time finding proof.
This video helps me so much!! I need to write about the critical issues that faced by coulomb during his life for my group assignment. May i use some points from this video as my references. Thank you.
Of course!
Great work!
Dipak Patel glad you liked it.
thank you very much! amazing! now i can improve my classes and motivate my students
Thank you for doing this research and providing the background on many important people and events that have given us the framework for all the technology we currently (no punning intended) enjoy. I was surprise that you were located in the United States as you delivery seems to be free of any accents detectible by me - perhaps I need a more sensitive instrument for such measurements. Regardless, I believe. you are providing a service of value to the general public. I have liked and subscribed
I have a Californian accent and as so many popular movies come from California, it’s often considered “no accent”.
@@Kathy_Loves_Physics I was a physics student at the U. TX at Arlington. about 15 to 20 years ago. I wonder if you may have worked there as you remind me of a person who did work there?
Almost all electronic scales use spring displacement to measure weights.
That’s how a load cell works - by measuring the displacement of a load member under load by change of resistance due to the change in cross section of the measuring element.
Great video!
Michał Fedorczyk glad you liked it.
Great video as always. Are you a Doctor Who fan?
really amazing explaination ma'am, appreciated !!
love from india !
Exceptional
Wow clear concise. 😊
Hi, I had a question that who was the first to disvover that *charges could be measured* ?? ..
And the other thing When were *properties of charges(like additivity and conservation)* discovered ?? because Coulomb used them *implicitly* in his experiment of Coulomb's Law...
I never noticed that about the Eiffel Tower when I was there. I do remember making a bet with my mom and brother, because I was bored of waiting in the line for the elevator, that I could run up the stairs before they could make it through the line and up the elevator. I first tried to convince everyone to go up the stairs because they were free, while the elevator cost money, and no one was even trying to go up the stairs instead of waiting in the long line. I did actually beat them to the top of the tower by running up the stairs, something I would never been able to do all these decades later, plus I doubt they have the stairwell open like that anymore either due to terrorism but I was only ever there once so I have no idea.
To be honest, having your name engraved on the Eiffel Tower is an honour but not that great an honour. There are so many scientists and engineers named there. Basically, that put you in the top 100 French scientists/engineers.
I learned that Coulomb was an amazing engineer which led to him becoming a Captain in a short time. I didn’t even know he was in the military to begin with.
Golden channel
Hi Kathy, again. I am still searching for information on Coulomb's work at the Paris Academy Observatory, What is the reference to the information in your Biography of Coulomb and his Equation at 5.47 minutes. your text states "The person who was going to measure the angle would often gain a little bit of electric charge which would then make the needle sway electrically not magnetically" This is obvious to us now, but did Coulomb know that it was an electrical effect? After all there was no resinous or vitreous materials being rubbed. I ask again, what does the reference tell us? I suspect that he noted that the needle swung to the place where the case came closer. To solve the problem all he had to do was make the inside of the case circular. I suppose that is why even today Magnetic compasses are always circular. This hides the truth that all charged objects are attracted to their surroundings.
How are the books coming?
Hi Kathy, when I watched this clip I realised that you have references that I was not able to find. I was initially reluctant to ask you for the information as your clip seemed to purport history as it is usually portrayed. My research seeks to expose a mistake that Coulomb made and the miss interpretation of it today. When I watched your clips on Tesla and Laura Bassi, I realised that I had misunderstood you. You are a true searcher of the truth. What is your reference to the time Coulomb was fixing the problem he encountered with the sensitive compass installed at the Paris Academy observatory? You mention a biography, but which? I have a copy of the Classic Reprint Series, Matter and Motion by James Clerk Maxwell that I have no use of. Would you like it? Keep up the greate work.
Thanks for everything
You are welcome
The real geniuses are the people who discover these laws in the first place, the rest of us just have to learn the formula.
Hi madam, what was the quantitative measure of ONE COLOUMB in Charles coloumbs period of time? As charge of an electron was only found after his death...how was charges measured in his time?
Amazingly, coulomb didn’t know what kind of charges he was dealing with he only knew if he halved the value or reduce the value by four by touching a sphere to a conducting sphere that was the same size (a time or two). So, in coulombs time they had absolutely no units for charge.
Wonderful :) Thank you :)
My pleasure. Glad you liked it
great
terima kasih atas persamaan rumus
Where did the constant come from?
Excellent question. My impression is that it is complicated. I think it started when scientists started to believe in Ohm’s law in the 1840s and that’s when they started to find conductivity constants which led to looking for the permeability of free space. In 1857 two German scientists named Weber and Kahlrausch found the ratio of the permeability of free space and magnetic permeability to be related to the speed of light squared which inspired Maxwell to write his famous equations. Then, in the 1860s, the British Association of Scientists started naming things and standardizing units where they brought back an idea from Gauss of basing everything on units of length, mass, and time. Maxwell and others chose cm, grams and seconds (thus called the cgs units or Gaussian). In the midsts of all of this the units of charge were named Coulombs and the constant was called Coulomb’s constant although it was often defined as a function of the permeability of free space as that was the constant that was first derived. I might be wrong though as I haven’t really studied it in detail.
@@Kathy_Loves_Physics The second German scientist's surname was Kohlrausch. 🙂
Can I get the transcript please?
Of course, it is on my website www.kathylovesphysics.com
I believe observation is a key part of science. Example, march-April 2020 You were standing in your back yard making a video for your TH-cam channel. This was at the start of the Covid pandemic and being outside was a brake form the depression of being in the home all the time. Did i get any of this right?
Also, their were no airplanes to mess up the audio.
Coulomb didn’t originally discover (the laws of) electrostatics but Henry Cavendish
Hi, madam this is great video, can I use this information's on my blog.
Senthil M sure no problem. feel free to email me if you need/ want links to references
@@Kathy_Loves_Physics Thank you so much you have great mind madam
Enjoying every words.
I request you I really request you I heartly request you please do the same the history of ohms law what ohms did how he arrived at v=ir
Now a days people use ammeter and voltmeter to give us proof of such equations but still am not satisfied back in 17th century there were no ammeter and vollmeter devices available then how ohms arrived at this formula please.
Surprisingly, I did have an ammeter which was just a compass with wires wrapped around it. I will eventually do a video about him but it’s gonna take me a while if you want to know more information about Ohm ASAP You can find my email address and the about me section and shoot me an email and I will send you part of my new book all about him in the history of his accomplishments. - Kathy
Thrown in the chokey because of a canal proposal. I've got to research that; off to fr.wikipedia.
How work memory card make a vdo mam
Great name in physics.
It is important to talk about unpopular scientists
Mohamad omar Al-barody it’s funny, I thought that Coulomb was popular but maybe not.
@@Kathy_Loves_Physics Well you don't get a unit of anything or a constant named
after you unless peers appreciate your work. But i do like how you sometimes drop in the
name of an obscure or otherwise marginalized person.
@@Kathy_Loves_Physics I think he meant not very well known. Compared to Faraday or Newton, Coulomb is not well known.
Based Coulomb.
How to work display make a vdo plz mam
Did Eiffel get to decide solely who names were put on the Eiffel Tower? I would bet it was a commitee.
The Eiffel Tower was designed entirely by the Eiffel Company…
@@allangibson2408 But the plaques I doubt were chosen solely by Eiffel -- that would have been a role that few people would have felt qualified to assume by themselves -- how would Eiffel know who the most prominent French scientists, etc. were?
@@animalntelligence3170 They pretty much put every French scientist, including the lame ones. Oops, sorry I misspoke I meant including Monsieur Lame.
Kidding aside there are 72 named over there so... it's an honour but there are a lot of names you've never heard of. And yes, including Lame (pronounced Lah-mey)
Love you mam 💕❤️❤️❤️ from india
Jai hind
Brother, God loves you so very much that He sent His Son Jesus Christ, who bled and died on a cross for you, so that you may have a chance to believe in Him, and by believing in His name you may have eternal life, full of His peace. Without Jesus as your Lord and master, you will always feel an empty void inside of you. And what's more, He has risen back to life so that you may be justified. Jesus loves you, God cares for you! Therefore repent from your ways, and believe the good news.
Talk about some mathematicians
Mohamad omar Al-barody ok. The video won’t have hard math as much as some trig tricks that will (hopefully) be helpful to advanced high school and beginning college students, so don’t be too excited.
Hi madam,
❤❤❤❤ From Pakistan 🇵🇰
please we need tranzlation to Arabic
I would love that - I think I made it so that people can translate to other languages and it would make me so happy if that was done.
I hate over-achievers.