Disscussing old, rare, very specific or otherwise uncommon units and measurements

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Postby yo » Sun Sep 10, 2006 4:58 am


4.5x10 to the negative 1 power?

Postby Dirtman » Sat Sep 16, 2006 5:05 pm


There are 1,000 milligrams in 1 gram so;

450,000 grams * 1000 = 450,000,000 milligrams.

4.5 x 10^-1 is scientific notation for 0.45. It’s also referred to as exponential notation. On a calculator or computer, where a superscript font isn’t available for the exponent, it can also be written as 4.5E-1. “E” simply stands for exponent.

Scientific notation is shorthand for writing very large or small numbers in a shorter format. Examples (using the numbers above):

450,000 can be written 4.5E+5.
450,000,000 can be written 4.5E+8

For more information, do a Google search for “scientific notation”.

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