The Weak Nuclear Force: Quantum Chameleon
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The Weak Nuclear Force: Quantum Chameleon

Of the four known forces, one of them stands out as having some unique properties. I’ve spoken in another video about the manner in which the weak force only interacts with particles of a certain spin configuration and antiparticles with the opposite spin configuration. But in this video, I want to talk about the manner […]

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The most significant genius: Emmy Noether
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The most significant genius: Emmy Noether

Amalie Emmy Noether, or Emmy, as she preferred to be called, was born on March 23rd in 1882. Her dad was a professor of mathematics at the University of Erlangen in Bavaria and, as a young girl, she trained in languages. By age 18, she had mastered French and English well enough to be certified […]

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Pop-up Toy – Dynamics Level 3
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Pop-up Toy – Dynamics Level 3

We have to compare the total energy of three different situations. In the first one there’s a mass m on top of a spring of length l_0. In the second situation, we have the same mass, still stationary, but the spring has been compressed so that it only has a length l_1. In the third […]

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Ski Jumping – Intro to Physics
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Ski Jumping – Intro to Physics

Let’s start off with this problem–let’s pick a location to define a potential energy U to be equal to 0. I’m going to choose just this line here, a place where the skier will land and where all of our heights are measured from just to make things nice and easy. The first part of […]

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Simple Harmonic Motion: Crash Course Physics #16
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Simple Harmonic Motion: Crash Course Physics #16

In June 2001, officials in London unveiled a striking new feat of engineering: the Millennium Bridge — a pedestrian bridge spanning the River Thames. It promised to be very useful, and it was cool to look at, but it had to be close almost immediately. Because when people used the bridge, it swayed back and […]

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Is the Universe an Accident?
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Is the Universe an Accident?

For centuries scientists and especially physicists have believed that we would be able to show why our universe is as it is as a necessary consequence of certain fundamental principles and laws. Like finding — having a crossword puzzle with only one solution, the given certain very fundamental principles like the law of conservation of […]

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