Kathy Loves Physics
Before I get started, I feel that I should warn you that this video is VERY fast and dense with high level physics. I basically go through the physics as if you were students in an advanced physics course on Electricity and Magnetism at an elite university. I am not saying that to discourage anyone [ ] The post Misconceptions in Deriving the Poynting Vector: History and Physics appeared first on…
History of electric transformers from Faraday through Lenz, Sturgeon, Callan, Ruhmkorff, Gaulard, Westinghouse and more (with a description of what Tesla did and didn t do in the evolution of electricity). Hello, my name is Kathy Joseph and I have done a lot of original research from 1800s papers, magazines, patents, and books to tell you [ ] The post The (Shocking) History & Physics of Electric…
by Kathy Joseph I just finished a video on a history of the quaternions and a biography of their inventor, William Rowan Hamilton. In it, I stated, I hope pretty convincingly, that the basic features of vector algebra ALL came from Hamilton: the scalar, the vector, the dot product (or, at least the negative of [ ] The post Quaternions to Vector Analysis appeared first on Kathy Loves Physics .
A Biography and Description of Couplets, Quaternions and the life of Hamilton Before I get into quaternions and William Rowan Hamilton and why I think both are amazing, I would like to take a couple of minutes to go over why I ended up making this video. This video started because I was working on [ ] The post Quaternions Are Amazing and So Was William Rowan Hamilton (their creator) appeared first…
In January of 1912, almost 20 years after the “war of the currents” was over George Westinghouse Jr. was awarded the American Institute of Electrical Engineer’s highest honor, the Edison Award, for “the development of the alternating-current system for light and power.”[1] In his introduction, the influential and delightful scientist Michael Pupin, said how great [ ] The post Why Nikola Tesla is…
Table of Contents: The Truth about Tesla s Contract with Westinghouse How Westinghouse Became an Industrialist George Westinghouse Transitions from Gas to Light Westinghouse and the Transformer Westinghouse and the AC Transmission George Westinghouse and Thomas Edison The Truth about Tesla s Contract with Westinghouse This video is my attempt to correct what I think is an [ ] The post George…
Introduction In this video I am going to explain the dot product, the cross product, the divergence, the curl and how it all works for Maxwell’s equations AND what Maxwell’s equations mean about magnets and light and a tiny bit about why that is important. But before I do that, I want to take a [ ] The post Maxwell s Equations Explained: Supplement to the History of Maxwell s Equation appeared…
I would like to start with a little story. In the late 1950s the faculty of Caltech became concerned that the physics undergraduate curriculum was out of date and wasn’t keeping up with the exciting new developments in Physics, including the discoveries developed by one of their star professors named Richard Feynman. So, as Feynman [ ] The post History of Maxwell’s Equations: #1 Gauss’s Law…
When I learned Maxwell’s equations in college, I was taught to draw the permittivity with a Greek letter epsilon that looked like a c with a line in it and not like a backwards 3 like usual. Table Of Contents Why Physicists Use 2 Forms of the Greek Letter Epsilon Image References Reference Why Physicists [ ] The post ( ∈ vs. ε): Why Physicists Use 2 Forms of the Greek Letter Epsilon appeared first…
Before I get into the nitty grities of the physics of the Faraday cage and the ice bucket experiment, I would like to start with a simple demonstration of the cage that I did with things around the house that I think is pretty amazing. Table Of Contents Simple At-Home Faraday Cage Experiment History of [ ] The post Faraday Cage and Ice Pail Experiment Explained appeared first on Kathy Loves…