What Is The Speed of Dark?

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SOURCES BELOW:

this is the video where I talk about THE SPEED OF PUSH: https://www.youtube.com/watch?v=Do1lm9IevYE

Big thanks to Martin Archer for help with this episode: http://www.martinarcher.co.uk/

And thanks to Guy Larsen for his shadow magic: https://twitter.com/guylar

music by http://www.YouTube.com/JakeChudnow
and http://www.audionetwork.com

shadows faster than light:

http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/FTL.html#3
http://physics.stackexchange.com/questions/63434/could-the-shadow-move-with-faster-than-light-speed
http://www.madsci.org/posts/archives/2000-02/950834634.Ph.q.html

making the moon brighter: http://what-if.xkcd.com/13/

sunset and earth’s shadow and belt of venus in single pics:

http://apod.nasa.gov/apod/ap131024.html
http://apod.nasa.gov/apod/ap100729.html

amounts of evening-types in a city: http://weatherspark.com/averages/33125/Honolulu-Hawaii-United-States

superluminal scissors:

http://math.ucr.edu/home/baez/physics/Relativity/SR/scissors.html
http://boards.straightdope.com/sdmb/archive/index.php/t-69757.html

wave animations:

http://www.ablongman.com/mullin/AnimationPages/FigsI-19&20.html
http://www.acs.psu.edu/drussell/Demos/SWR/SWR.html
http://resource.isvr.soton.ac.uk/spcg/tutorial/tutorial/Tutorial_files/Web-inter-superp.htm

phase velocity vs. group velocity: http://resource.isvr.soton.ac.uk/spcg/tutorial/tutorial/Tutorial_files/Web-further-dispersive.htm

faster than light dark patches:

http://www.askamathematician.com/2013/02/q-is-darkness-a-wave-the-way-light-is-a-wave-what-is-the-speed-of-dark/
http://www.physicsclassroom.com/class/light/Lesson-3/The-Path-Difference

make a light interference pattern at home:

http://www.exploratorium.edu/snacks/diffraction/
http://www.instructables.com/id/How-to-perform-Interference-and-Diffranction-at-Ho/

the speed of ignorance:

http://www.brainpickings.org/index.php/2012/04/02/stuart-firestein-ignorance-science/
http://philosophicalfallibilism.blogspot.com/2009_03_20_archive.html
http://kk.org/thetechnium/2008/10/the-expansion-o/