a tiny peek at Christmas economics

From acollierastro. People who do not celebrate christmas but have other gift-intense holidays: is it bad for you too? Link to The Deadweight Loss of Christmas: https://www.amherst.edu/media/view/104699/original/christmas.pdf Original Planet Money podcast with Prof. Waldfogel: https://www.npr.org/sections/money/2009/11/podcast_happy_efficent_holiday.html/ Link to Planet Money candy bar episode: https://www.npr.org/sections/money/2012/12/25/167976196/episode-238-making-christmas-more-joyful-and-more-efficient Link to ‘In defense of gift giving’ or we could change the…

electricity and magnetism are the same thing

From acollierastro. electricity and magnetism are the same thing: in 20 minutes-ish! James Clerk Maxwell: A Dynamical Theory of the Electromagnetic Field — https://royalsocietypublishing.org/doi/epdf/10.1098/rstl.1865.0008 Kahn Academy: Deriving Speed of Light from Maxwell’s Eqns — https://www.khanacademy.org/science/electromagnetism/x4352f0cb3cc997f5:the-remaining-maxwell-s-equation-and-understanding-light/x4352f0cb3cc997f5:compiling-maxwell-s-equations-how-light-works/v/deriving-speed-of-light-using-maxwell-s-equations Many thanks to my patrons! Join my patreon for an extra video per month: https://www.patreon.com/acollierastro

the antimatter video

From acollierastro. Dear children, this is the last hour; and as you have heard that the antimatter is coming, even now many antimatter has come. This is how we know it is the last hour. They went out from us, but they did not really belong to us. For if they had belonged to us,…

how antimatter spacecraft will work

From acollierastro. In this video I do not describe how antimatter spacecraft will work. (I am still not over the use of the word ‘will’ in that title. I know that it is intended to match the series of other titles on the website but the audacity!)What I will do is complain on the internet.…

what is the radius of the hydrogen atom?

From acollierastro. What is the radius of the hydrogen atom? How has this answer changed over time? Quantum mechanics is fun and cool. Tablet math is tedious. If anyone is trying to solve a homework problem and just googled this, a_0= 0.53e-10 m Does anybody actually read these things? The textbook is Principles of Quantum…

can we space elevator? should we space elevator?

From acollierastro. I am so sorry but I don’t understand why anyone wants a space elevator. Coffee and the problem Episode 1: The science fiction writer R. A. Heinlen describes a skyhook satellite that consists of a long rope placed in orbit at the equators, aligned along a radius from the center of the earth,…

violin plots should not exist

From acollierastro. Violin plots are never the best version of a plot. They are hard to read and bad. Violinplot: https://www.stat.cmu.edu/~rnugent/PCMI2016/papers/ViolinPlots.pdf Beanplot: https://www.stat.cmu.edu/~rnugent/PCMI2016/papers/Beanplot.pdf Most plots from Harvard Open Courseware stuff: https://www.labxchange.org/library/items/lb:LabXchange:46f64d7a:html:1 Patreon (join for exclusive video each month): https://www.patreon.com/acollierastro

the computers can play stratego now

From acollierastro. I love stratego. Please recommend some awesome two player games below. Go check out @fairwaystrategovideos to watch some real stratego games and get some insight into strategy if this video has convinced you how awesome stratego is: https://www.youtube.com/@fairwaystrategovideos DeepNash Paper: https://arxiv.org/abs/2206.15378DeepNash Blogpost: https://www.deepmind.com/blog/mastering-stratego-the-classic-game-of-imperfect-information DeepNash Code: https://github.com/deepmind/open_spiel/tree/master/open_spiel/python/algorithms/rnad fenirob stratego game shown briefly; https://www.youtube.com/watch?v=jamAlcDo9Tk Patreon…

best physics equation | virial theorem | gravothermal catastrophe

From acollierastro. Three things from thermodynamics. Why PV=nRt? What is the temperature of a black hole? Why is the PBS NOVA show so bad? I really tried to pronounce Clausius correctly but I don’t think I nailed it. On the Mechanical Theorem Applicable to Heat by R. Clausius:https://isidore.co/misc/Physics%20papers%20and%20books/Zotero/storage/XZVZN9VN/Clausius%20-%201870%20-%20XVI.%20On%20a%20mechanical%20theorem%20applicable%20to%20heat.pdf On the Masses of Nebulae and of…

how to hack a telescope | ransomware sucks

From acollierastro. It would be cool if people would stop scamming other people. I don’t think anyone actually saw the movie I’m referencing with ‘GENIUS HACKER MIT’ It’s called blackhat with Chris Hemsworth and I have not seen it either. I just think it’s funny that the public perception of hackers who scam is ‘genius’…