"S^2 = x^2 - t^2This is Einstein's 1905 geometry. All he noticed was that distances are not objective. How far it is from New York to Chicago depends on how fast you're going by when you look at it. And lengths of time are not objective. What you call a minute or an hour depends upon how fast you're going by when you look at the clock."
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Hindus from the United StatesUniversity of California, Berkeley alumniAstronomers from the United States
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John Dobson (amateur astronomer)
John Lowry Dobson (14 September 1915 – 15 January 2014) was an American amateur astronomer and is best known for the Dobsonian telescope, a portable, low-cost Newtonian reflector telescope. He was also known for his efforts to promote awareness of astronomy (and his unorthodox views of physical cosmology) through public lectures including his performances of "sidewalk astronomy". Dobson was also the co-founder of the amateur astronomical group, the San Francisco Sidewalk Astronomers.
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