Splash Biography
EMMA BERGER, ESP Teacher
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Major: Chemistry College/Employer: UC Berkeley Year of Graduation: G |
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Brief Biographical Sketch:
Not Available. Past Classes(Clicking a class title will bring you to the course's section of the corresponding course catalog)S601: 1 Kilogram of Photons in Splash Fall 2020 (Oct. 31, 2020)
Photons are massless particles. Yet, if you manage to put $$1.48\times10^{40}$$ photons with frequency equal to $$9,192,631,770~$$Hz on a weighing scale, you will get a reading of $$1~$$kg. This is the new definition of a kilogram, which replaced the 90%-platinum/10%-iridium alloy sitting in Paris. In this class, we will discuss how the fundamental unit of mass is defined. In particular, we will answer the question: do photons have mass?
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