If you’re searching for the perfect present for the physicist who has everything, how about a Lego kit for measuring one of the universe’s fundamental constants?
Planck’s constant is one of the most important numbers in science. It describes the relationship between the energy and frequency of an electromagnetic wave in an equation known as the Planck-Einstein relation: E = hv (where E is energy, v is frequency and h is Planck’s constant).
de New on MIT Technology Review
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