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0:15 Trig function?

Very interesting , thanks so much for your work.

All those great scientific findings, yet Thomson's conclusion was that electrons were to small to be- "of any practical use".

I have been Feynman admirer since I was in my teens. His books are not exactly easy. But neither is physics, so we have to be fair.

Every circuit has both capacitance and inductance as well as resistance. There's an RC time constant and an RL time constant. It's easy to work out if you know the values of R L and C

The old Negative resistance, a subject all of it's own.

And today after full cycle history is back again as western so called "progressivists" or better said lefty useful idiots, are siding with terrorists and chanting death to Israel and US...

You can’t learn about Cathode Ray Tubes (CRT) in Florida.

Brilliant!

hope you are OK Kathy ---- missing your deep and insightful learning videos.

Well done for making the explanation of FM and Armstrong's Phase modulator, and his demise that was so tragic.

8:26 how did he arrive at his second conclusion?

Great video short and sweet with everything explained 👍

Subscribed to this channel. You are good.

You should read Nobel prize winner W. Ostwald book. "L'Energie" for an alternative account on the deveoppment of the concept of energy and the First law

l live your youtube channel…your enthusiasm seems genuine….and topics are always interesting

"Electromagnetic Fields and Waves" by Lorrain & Corson (2nd Edition) contains a problem in chapter 2 "Electrostatic Fields in a Vacuum" (2-19) on J.J. Thomson's "Plum Pudding" model of the atom. It asks to (A) find the force on an electron; (B) describe its motion; (C) the frequency for a 1 Angstrom-sized atom; and (D) compare this frequency to that of visible light. A rather thought-provoking question in an Undergraduate E&M textbook!

Cool!

thanks

Your videos are fantastic! Spreading knowledge in a world of cheap fast-food entertainment is noble and worthy. Please ignore nah Sayers and negative minds. Best wish!!!

What a STORY!!! Thank you! This is sooooo hard to grasp... You're fortunate to grasp as you do - - - and we're fortunate that yu simplify for us.

Good job pronouncing Bologna

Fantastic information I would think you would at least wear a wireless mic. The audio could’ve been a lot better.

Fascinating!

Christians and flagellation can lead to some good substance.

I do like her presentations...this one included. But the incessant hand waving is truly distracting.

just in love with your youtube channel! thanks for these rich contents

I can never shake that Boltzmann committed suicide. If you're correct, could his death be attributed to shame over the entropy equation he is credited with, be a factor?

Why is Nikola Tesla's youthful photo always presented with an awkwardly foward Tilted head on a Strangely puffed up bulging Chest ?? .....I constantly see this historical photo & looks Doctored....

22:13... How is AC transformer functionally Equivalent to DC powered induction or Ruhmkorff coils that use the Counter EMF multiplier factor of typically >10 Times the turns Ratio ?? .....Run any Induction coil off AC supply & you only get the Turns Ratio voltage difference....

24:25....If true, would the Ruhmkorff coil Also be more Efficient (Less eddy currents & iron core heating losses) if the core Laminations were stacked Transversely instead of traditionally Longitudinally ??...

That’s not curie’s method that’s Pierre curie’s method, he discovered the piezoelectricity with his brother and he invented many tools and machines and balances , he made all those tools for his wife , anyway it’s a good video

Maria SKŁODOWSKA - CURIE była Polką. Pierwiastek POLON nazwała na cześć swojej ojczyzny Polski 🇵🇱

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Most elaborate video I have seen including the history. Good work Kathy!

Nice presentation, but you leave the impression that Faraday did this one thing and then spent the rest of his life in a forced and dreary occupation of lens making. He had many many other major accomplishments, including the discovery of electromagnetic induction in 1831. In 1833, he was appointed as the first Fullerian Professor of Chemistry at the Royal Institution of Great Britain.

Keep in mind that RCA didn't like to pay royalties! Some of the things that Sarnoff did may not have been the most ethical, but was legal in terms of running RCA. He had invested to much in AM radio only to have it replaced. Especially by a system that his company didn't own.

Your discussion is very interesting and intense but I’m afraid that I will have to listen to it many many more times and probably transcribe it before I can even understand it enough to ask you a sensible question…notwithstanding thanks!

YES, astronauts learned that the hard way in the early days of the space program.

Thanks for great job of your videos

The Holocaust was NOT the only wrong that took place during that war, and events of today in the Middle East are making it even easier to forget that period. I wish this woman would show some sympathy for the loss of life that took place as a result of the testing of Nuclear weapons. The Americans are no less guilty of crimes against humanity

Thanks Kathy. I love your videos about science history. When I was a physics undergraduate many years ago one of the things that I found frustrating was that very little information was given about the historical context in which discoveries were made and so it was difficult to imagine what scientists of the time were thinking and trying to do. We would be presented with something like Schrodinger's Equation without having any idea of where it came from. On a small matter, I don't think you pronounced Einstein's daughter Lieserl's name correctly - I think it's more like "lee-zel" - if you have seen the film "The Sound of Music" there is a character with that name.

The funny thing is Einstein did not have an issue with lining in a country where there were second class citizens and virtual slaves

How do you say waste of time

Why are you wasting time you me Ust be a democrat

🎯 Key points for quick navigation: 00:00 *🌌 Einstein's Revolutionary View of Light* - Einstein's photoelectric effect equation stemmed from a groundbreaking perspective on light, which merged wave and particle theories. - Einstein's initial skepticism towards Planck's ideas and subsequent exploration of the photoelectric effect marked the beginning of quantum mechanics. - The convergence of Einstein's personal life, scientific curiosity, and theoretical breakthroughs during this period laid the foundation for modern physics. 02:22 *🤰 Mileva's Challenges and Einstein's Professional Journey* - Mileva Marić, Einstein's partner, faced personal and academic struggles, highlighting the societal barriers for women in science during the early 20th century. - Einstein's employment challenges and personal circumstances, including Mileva's pregnancy, underscored the complexities of their relationship. - Despite these obstacles, Einstein's eventual employment as a patent clerk in Bern provided him with the opportunity to pursue his scientific interests. 05:38 *📝 Development of Einstein's Quantum Theory* - Einstein's exploration of Phillip Lenard's experiments and his interpretation of ultraviolet light's effects on electrons paved the way for his quantum theory. - The concept of light quanta, or photons, emerged from Einstein's hypothesis, challenging conventional notions of light as purely wave-like. - Einstein's formulation of the photoelectric effect equation, incorporating Planck's constant and the concept of quantized energy, demonstrated the dual nature of light and established a cornerstone of quantum mechanics. Made with HARPA AI

People really need to listen to this presentation. But unfortunately the truth is that many people don't care to learn. They would rather believe some BS from a trash Oatmeal Comic.

Without question the finest history of thermo lesson I have ever witnessed. Add to that the *absolute clearest* explanation of the derivation and description of the 2nd Law. I will be looking for and using your videos in my Physics classes for sure!

Thanks so much for this awesome history! Didn't know how spoiled I was when you were putting out videos regularly.