Do Photons Cast Shadows?

From Minute Physics. Thanks to CuriosityStream for their support. Go to http://www.curiositystream.com/minutephysics to watch Particle Fever and get Nebula! Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ This video is about two-photon (gamma-gamma) physics, and how photons can interact with each other – either mediated by a passing lepton, or gravitationally via lensing,…

When It’s OK to Violate Privacy

From Minute Physics. Go to http://www.dashlane.com/minutephysics for a free 30 day trial and 10% discount with offer code ‘minutephysics’ Watch the main video here: https://www.youtube.com/watch?v=pT19VwBAqKA Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ REFERENCES Cynthia Dwork (key inventor of Differential Privacy), giving a great intro talk about differential privacy https://www.youtube.com/watch?v=lg-VhHlztqo Hazards of Smoking:…

Protecting Privacy with MATH (Collab with the Census)

From Minute Physics. This video was made in collaboration with the US Census Bureau and fact-checked by Census Bureau scientists. Any opinions and errors are my own. For more information, visit https://census.gov/about/policies/privacy/statistical_safeguards.html or search “differential privacy” at http://census.gov. REFERENCES Differential Privacy in the Wild: http://www.vldb.org/pvldb/vol9/p1611-machanavajjhala.pdf Harvard University Privacy Tools Project: https://privacytools.seas.harvard.edu/differential-privacy Simons Institute Workshop Video Recordings and Articles…

How to Build a Lava Moat (with xkcd)

From Minute Physics. Where to Buy “How To” by Randall Munroe: · PRH.com: https://bit.ly/2L2G5hy · Amazon: https://bit.ly/2zfy974 · Barnes and Noble: https://bit.ly/2Zozxmt · IndieBound: https://bit.ly/2ZfwSre · Books-A-Million: https://bit.ly/2ZfxD3y · Apple Books: https://bit.ly/33TK3kX The world’s most entertaining and useless self-help guide, from the brilliant mind behind the wildly popular webcomic xkcd and the #1 New York…

Our Ignorance About Gravity

From Minute Physics. Thanks to the Heising Simons Foundation (https://www.hsfoundation.org/) for their support of this video, and of short range gravity research. This video is about how little we know about the behavior of gravity at short length and distance scales, what the constraints are on the inverse square law/Newton’s law of universal gravitation, at…

How Shor’s Algorithm Factors 314191

From Minute Physics. Go to http://www.dashlane.com/minutephysics to download Dashlane for free, and use offer code minutephysics for 10% off Dashlane Premium! Watch the main video: https://www.youtube.com/watch?v=lvTqbM5Dq4Q Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics This video explains how Shor’s Algorithm factors the pseudoprime number 314191 into its prime factors using a quantum computer. The quantum computation relies on…

How Quantum Computers Break Encryption | Shor’s Algorithm Explained

From Minute Physics. Go to http://www.dashlane.com/minutephysics to download Dashlane for free, and use offer code minutephysics for 10% off Dashlane Premium! Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics This video explains Shor’s Algorithm, a way to efficiently factor large pseudoprime integers into their prime factors using a quantum computer. The quantum computation relies on the number-theoretic analysis…

Why Do Compressed Air Cans Get Cold?

From Minute Physics. Thanks to http://brilliant.org/minutephysics for supporting MinutePhysics – get 20% a premium subscription at http://brilliant.org/minutephysics Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ This video is about compressed air cans (aka gas dusters) and why they get cold when you spray them. They cool off because the refrigerant inside (1,1-difluoroethane) is…

How ISPs Violate the Laws of Mathematics

From Minute Physics. Get a free trial of Audible at https://audible.com/minutephysics or by texting ‘minutephysics’ to 500500 Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ MinutePhysics is on twitter – @minutephysics And facebook – http://facebook.com/minutephysics This joke video is about how Internet Service Providers (aka ISPs, internet companies, telecommunications companies, etc) violate the…

Shells of Cosmic Time (ft. @AstroKatie)

From Minute Physics. Thanks to @AstroKatie (http://astrokatie.com, http://twitter.com/astrokatie) for the collaboration! Go to http://www.brilliant.org/minutephysics for free daily science puzzles Here’s the original twitter thread https://twitter.com/astrokatie/status/1066526148149108736 Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ This video is about the cosmic distance scale and how we see objects farther away in space (ie at higher…