RT @PhysicsVideo_: Thermochromic Beam Down Mug https://t.co/YbYCG9E4B8 - The Calculator Guide from Twitter

Thermochromic Beam Down Mug pic.twitter.com/YbYCG9E4B8

— Physics Fun (@PhysicsVideo_) August 29, 2018

from Twitter https://twitter.com/GuideCalculator

August 29, 2018 at 09:17PM
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