Kathy Joseph's Blog, page 2
October 27, 2022
The Origin of the Cathode Ray Tube: Physics of the Geissler tube to the Crookes tube
Let’s start in early 1857 in a laboratory in Bonn, Germany. That is where a physics professor named Julius Plücker was working with an instrument maker named Heinrich Geissler to create odd glass tubes that were, according to Plücker, “incomparably beautiful[i].”
Geissler and Plücker didn’t know it, but these Geissler tubes would change the world. These were the precursor to cathode ray tubes (also called Crookes tubes) and without them you wouldn’t have television, the oscilloscope, or e...
How does a Generator Work & How We Figured it Out
Most of our electricity comes from power plants that use a generator to, ahem, generate the electricity. OK, then, how does a generator work? And how did anyone figure it out in the first place? It’s time to get spinning.
Table of ContentsHow Faraday’s AC WorkedThe Commutator and Its UseHow an Electromagnet was UsedHow They Made Generators WorkHow Faraday’s AC WorkedIt all started in 1832. That is when Michael Faraday published his work on his m...
How Michael Faraday Discovered Induction, The Generator, and Magnetic Fields
How did Michael Faraday make electricity with magnets? Hey, how does anyone make electricity with magnets? And what does that have to do with the creation of the idea of magnetic fields? Watch this short video and find out.
Table of ContentsFaraday’s Experiment: The StartFaraday with Electro-MagnetismMaking of Electric GeneratorFaraday’s Experiment: The StartIn 1826, an English scientist named Michael Faraday had read that another English man named W...
How Michael Faraday Invented the Motor and Irritated His Mentor
Why would inventing a motor irritate anyone? And how did Faraday invent the motor in the first place? Well, I’ll tell you and along the way I will talk about a strange theory of spiraling currents, a misunderstanding of electromagnetic forces, and a useless motor.
Table of ContentsOersted’s Experiment ExplainedFaraday’s Electric MotorMichael Faraday and Humphry Davy’s Work RelationshipHumphry Davy’s DeathOersted’s Experiment ExplainedIn 1820, a Dan...
Michael Faraday Biography: How Faraday Escaped Poverty with a Lot of Luck
What kind of luck did a brilliant scientist like Michael Faraday need to succeed? It turns out, quite a bit! Luckily he had plenty of luck from a supportive boss, a helpful book, a generous patron, a chemical explosion, a fistfight, and even a fortunate outbreak of the plague! Wait, those last three don’t sound fortunate at all! Well, they were fortunate for Faraday! I’ll explain in my video.
Table of ContentsMichael Faraday’s Humble BeginningsHow Faraday Gained H...Humphry Davy Biography: How Doing Drugs Led To Success & the Arc Lamp
How in the world would doing drugs lead to success? And what is the arc lamp and how is that related to this whole mess? Well, I’ll tell you and along the way, I will talk about early 1800s drug parties, science superstars, giant stinky batteries, and chemistry “for the female sex”.
Table of ContentsHumphry Davy’s StartDavy’s Fame and Lecture in LondonThe Discovery of Eight New ElementsThe Arc Lamp and FeminismThe AccidentHumphry Davy’s StartHum...
How Volta Invented the First Battery because he was Jealous of Galvani’s Frog
How could jealousy lead to an invention? And why would someone be jealous of a frog? Well, I’ll tell you and along the way, I will talk about: academic dishonesty, reanimating corpses, scientific rivalries, tingly metals, and Napoleonic politics, and I will also show you how to light a LED bulb with pennies and vinegar and how to use pennies to make Oxygen!
Table of ContentsGalvani’s Experiment: Start of the First BatteryHow Volta Invented the BatteryHow Volta’s B...How Does a Tesla Coil Work? A Historical Deep Dive
You might have seen the crazy cool demonstrations conducted with Tesla coils but how do they actually work? Well, to really answer that question I am going to go talk about how all the parts were discovered and why.
Table of ContentStart of the Tesla CoilCallan’s InventionArmand FizauNikola TeslaHow a Tesla Coil WorksStart of the Tesla CoilThis story begins way back in 1826. That is when a retired soldier with some pretty amazing sideburns nam...
Boltzmann’s Entropy Equation: A History from Clausius to Plank
Boltzmann’s entropy formula is possibly the one of the most difficult equations in Physics. Not because the equation itself is that confusing(it isn’t, it is just two variables one constant and a trig function), but because it relates two things, entropy and probability of being indifferent energy states, that are both difficult to really understand.
So, as I usually do, I looked into the history of this law, who made it and why was it made? And I found that it was created by a scientist nam...
Charles Coulomb Biography And History Of His Equation
When I looked into the history of Charles Coulomb and his famous equation, I found that even beyond “his” equation, Coulomb was one of the most influential engineers of the 1700s.
And his accomplishments are more impressive when you realize that his background was descent but not considered good enough, his father lost the family fortune, he had a backstabbing boss that almost killed him, and he lived through one of the more turbulent times in history.
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