This video is about a multistable perceptual illusion, similar to the hollow face illusion, whereby maps or aerial or satellite photos look upside down/inside out, ie, concave (valley) parts look convex and convex (mountainous) parts look concave. Just flip the images around and things will make a lot more sense! It's just because our eyes gauge depth based on the location of shadows, and the sun always casts shadows on the bottoms of things.
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Mark Rober's youtube channel: https://www.youtube.com/markrober
This video is chapter 8 in my series on special relativity, and it presents a hands-on explanation of the resolution to the Twins Paradox using the mechanical minkowski diagram, aka mechanical Lorentz transformation, aka spacetime globe. Of course, the Twins paradox can be resolved with an understanding of spacetime intervals, relative inertial frames of reference, etc, but this is a nice hands-on version where you actually measure the proper times on a real, physical spacetime diagram with a ruler.
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https://www.youtube.com/watch?v=LKjaBPVtvms
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
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https://www.youtube.com/watch?v=o_W280R_Jt8
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This video is about Hardy's Paradox, wherein an electron and positron (or photons polarized horizontally and vertically) pass through Mach-Zehnder interferometers that overlap such that the particles have a chance of annihilating. If they do annihilate, then the interference pattern changes and there is a probability for both particles to be detected in the "dark arms" of the detector, that is, where previously there was no probability for detection for either particle. The paradox has implications for local realism, contextuality, lorentz elements of reality, and has been used as an experimental setup for weak measurements.
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https://www.youtube.com/watch?v=Ph3d-ByEA7Q
Watch the original here: http://bit.ly/oBpexd
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
In this tutorial I show how I synthesized the sound of hydrogen for the "Sound of Hydrogen" video using mathematica - it's a little technical, but you've been requesting it! Created by Henry Reich
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https://www.youtube.com/watch?v=IhvW8yZdE5A
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A HUGE thanks to Wren Weichman (@wrenthereaper) for helping with the 3D bike animation, Michael Aranda for drone photography, Pavel for dowsing and Melissa for helping crash bikes.
Bike references mainly from:
http://bicycle.tudelft.nl/schwab/Bicycle/
https://www.youtube.com/watch?v=2Y4mbT3ozcA
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https://www.youtube.com/watch?v=oZAc5t2lkvo
London Bridge has already been rebuilt twice! But what happened to the bridges that came down?
Also, explore a map of the big bang! http://www.bigbangregistry.com
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
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https://www.youtube.com/watch?v=TwmSFwQ0tx4
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This video is about the definition of a day, and how it applies (or not) on the sun. Solar day, sidereal day, universal coordinated time (UTC) day, etc. Length of a day.
Music by Nathaniel Schroeder, http://www.soundcloud.com/drschroeder
REFERENCES:
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https://www.youtube.com/watch?v=tnlI_b-K3hY
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This video is about the differences between the corpses or final degenerate dense star forms that dead stars take: black holes, neutron stars, and white dwarfs. The main distinguishing features between them are the mass cutoffs (Chandrasekhar limit and Tolman-Oppenheimer-Volkoff Limit), the matter that makes them up (electrons, protons, neutrons, singularity?), and what holds them up against gravity – not thermal pressure from nuclear fusion like in a star like the sun, but electron or neutron degeneracy pressure (fermi pressure/pauli exclusion principle), and the strong nuclear force, and... nothing (in the case of a black hole).
REFERENCES:
Chandrasekhar Limit: https://en.wikipedia.org/wiki/Chandrasekhar_limit
Tolman-Oppenheimer-Volkoff Limit: https://en.wikipedia.org/wiki/Tolman–Oppenheimer–Volkoff_limit
Richard Pogge (Ohio State) on Neutron & White Dwarf Stars: http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit3/extreme.html
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https://www.youtube.com/watch?v=NucdlR9EGbA
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
In this episode, we discuss the Wave Particle Duality and why quantum mechanics is weirder than anything we're used to in our daily lives! Created by Henry Reich
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https://www.youtube.com/watch?v=Q_h4IoPJXZw