Optical Illusions Wiki

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28 April 2014

27 April 2014

  • curprev 03:1203:12, 27 April 2014EndlessLemon talk contribs 1,226 bytes +1,226 Created page with "[[File:320px-Einstein_gyro_gravity_probe_b.jpg|thumb|254px|A fused quartz sphere manufactured for use in a gyroscope in the Gravity Probe B experiment. It is one of the most a..."