Matthew Dea

Science: Latest Scientific Discoveries

Tag: gravity

The Crazy Way Scientists Launch Rockets From Balloons

When you think of leaving the Earth, you probably think of something like this: This is the Saturn V launching Apollo 11 to the Moon. It was a chemical rocket, burning a mixture of kerosene and liquid oxygen to get its payload — the Apollo astronauts — off the Earth. Chemical rockets are basically an […]

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The Real Physics of Roller Coaster Loops

The Real Physics of Roller Coaster Loops

If you flip through the pages of just about any physics textbook, you will probably find a picture of a roller coaster loop illustrating the concept of centripetal acceleration. Textbook problems often portray loops that are perfectly circular in order to simplify calculations, but in reality, roller coaster loops are not circular at all. The […]

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Astrophysicist Explains One Concept in 5 Levels of Difficulty | WIRED
Cohl Furey on the Octonions and Particle Physics

Cohl Furey on the Octonions and Particle Physics

So my name is Cohl Furey and I’m a postdoctoral fellow in theoretical physics at Trinity Hall University of Cambridge. So the short answer is that the octonions are this special number system in pure mathematics and the octonions could be important for particle physics because they seem to mirror the behavior of certain elementary […]

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The Physics of Unicycling

The Physics of Unicycling

[MUSIC PLAYING] Have you ever seen anybody unicycling, maybe wondered how does anybody balance on that thing? Maybe you were like, I got this, and tried it yourself. But if you’ve ever tried unicycling, you’d probably agree that riding on one wheel doesn’t start easy. So how does anyone balance on a unicycle? Well, the […]

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AP Physics 1: Dynamics Review (Newton’s 3 Laws and Friction)

AP Physics 1: Dynamics Review (Newton’s 3 Laws and Friction)

mr.p: Good morning, today we’re going to review the dynamics topics covered on the AP Physics I exam. Dynamics is the study of the motion of objects and the forces causing those motions. Bo: Hey guys Billy: Hey Bo. Bobby: Hi Bo. ♫ flipping physics ♫ mr.p: Bo, what is the difference between inertial and […]

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Einstein’s General Theory of Relativity | Lecture 1

Einstein’s General Theory of Relativity | Lecture 1

[music playing] This program is brought to you by Stanford University. Please visit us at Stanford.edu. Leonard Susskind: Gravity. Gravity is a rather special force. It’s unusual. It has difference in electrical forces, magnetic forces, and it’s connected in some way with geometric properties of space, space and time. But– and that connection is, of […]

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Gravitation: The Four Fundamental Forces of Physics #3

Gravitation: The Four Fundamental Forces of Physics #3

Welcome Back to our series on the four fundamental forces of physics. Today we are talking about gravitation, the force that you and I probably have the closest working relationship with. But it’s not only what sticks you to the ground, and makes you fall down, it also explains how stars and galaxies form, and […]

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Quantum Gravity and the Hardest Problem in Physics | Space Time
The science of expansion: Andromeda, gravity, and the ‘Big Rip’ | Michelle Thaller

The science of expansion: Andromeda, gravity, and the ‘Big Rip’ | Michelle Thaller

One of the questions I get asked most commonly as an astronomer is if almost all the galaxies in the universe are flying away from us in space, why is the Andromeda Galaxy getting closer to us? Does that somehow mean that the Big Bang works differently in different parts of the universe? And the […]

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