The Photon Clock Challenge | Space Time | PBS Digital Studios

What time is it??? ...And be sure to pre-order a Space Time t-shirt: http://dftba.com/spacetime Rules: please give an explanation for your answer! Also, if you give an answer in the comments here you ll be disqualified. Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g Last week’s episode on Einstein’s photon clock thought experiment: https://www.youtube.com/watch?v=GguAN1_JouQ Question #1: When the clock is moving towards you, do you observe its hands to be ticking slower, faster, or at the same rate compared to the rate of ticks that you observe when it s moving away from you? Question #2: When the clock is moving towards you do you see its hands ticking slower, faster, or at the same rate as a second clock that is stationary with respect to you? Make sure you title your email: "Photon Clock Challenge Answer" 5 random winners will receive a PBS Space Time Digital Studios t-shirt! Good luck! ______________________ Written and hosted by Matt O’Dowd Made by Kornhaber Brown (www.kornhaberbrown.com)