davidjamesweir’s avatardavidjamesweir’s Twitter Archive—№ 4,688

    1. …in reply to @GEddolls
      GEddolls WilfWonders ninaneedsspace Agree with GEddolls... also: Gravitational waves are small ripples on a slowly changing background (like how waves on a beach come quickly but tides vary over several hours). If the sun vanished, it wouldn't be 'small', but the change would still travel at the speed of light.
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  1. …in reply to @davidjamesweir
    GEddolls WilfWonders ninaneedsspace In some sense: Special relativity = everything has a speed limit, the speed of light General relativity = everything _including gravity_ has a speed limit, the speed of light
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