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1905 — Albert Einstein, a German physicist,
proposes the special theory of relativity and the
equation E=MC2. In other papers, he explains
Brownian movement and proposes the quantum theory
of light to explain the photoelectric effect.
In other news:
- Clarence McClung determines that females have
XX sex chromosomes, while males have XY.
- The first Rotary Club is founded in Chicago.
Clubs consist of at least one member of each business
or profession and meetings are held at each member’s
office in rotation.
- The number of registered automobiles rises to
77,988, compared to 300 ten years previously. Cars
are still considered toys by most people.
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