Biography of Coulomb and his Equation 

Count Dracula that is funny. I’m imagining astronauts complaining about being on twisting machines.

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

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).

Glad you liked it!

Dipak Patel glad you liked it.

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.

Michał Fedorczyk glad you liked it.

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?

Of course!

You are welcome

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.

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.

My pleasure. Glad you liked it

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. 🙂

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.

Also, their were no airplanes to mess up the audio.

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.

Of course, it is on my website www.kathylovesphysics.com

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

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

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)

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.

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.

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.