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Re: (meteorobs) Re: urgent astronomy question
> In my teaching materials, the letter "e" appears several times in
> quantitative values concerning the planets of our solar system. I had
> assumed that it represented a constant value for Earth, multiplied by
> whatever numeric value. For example, I have information on the masses of
> two planets: #1 = .98e+23; #2 = 1.08e+23
It means the exponential of 10. For example, .98e+23 means 0.98 times 10
to the 23rd, which is 0.98 * 100000000000000000000000, or 0.98 * 10^23.
1.08e+23 = 1.08 * 100000000000000000000000 = 108000000000000000000000.
And 5.0e-8 = 0.00000005. 7.0e+4 = 70000.
Best, Jin
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Jin Zhu | Tel.: +86-10-62759888, 62756612 (O)
Beijing Astronomical Observatory | +86-10-62579689 (H)
Chinese Academy of Sciences | +86-314-5054767 (Schmidt dome)
P. R. China | Fax : +86-10-62765031 or 64888731
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