New observations seem to settle the question of where cosmic rays come from.
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Thursday, 21 February 2013
What Is Light? Young's Double Slit Experiment
Light is so common that we rarely think about what it really is. But just over two hundred years ago, a groundbreaking experiment answered the question that had occupied physicists for centuries. Is light made up of waves or particles?
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Other Veritasium videos
Friday, 15 February 2013
Demystifying the Higgs Boson with Leonard Susskind
(July 30, 2012) Professor Susskind presents an explanation of what the Higgs mechanism is, and what it means to "give mass to particles." He also explains what's at stake for the future of physics and cosmology.
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