SOLUTION: I saw this question and answer in my textbook: What decimal fraction of a second is a picosecond,ps? The answer the book gives is 10^-12 second. My question is: What is a dec

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Question 327724: I saw this question and answer in my textbook:
What decimal fraction of a second is a picosecond,ps?
The answer the book gives is 10^-12 second.
My question is: What is a decimal fraction? I just don't understand that concept.
Found 2 solutions by CubeyThePenguin, ikleyn:
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
Write 10^(-12) as a fraction.

10^(-12) = 1%2F%2810%5E%2812%29%29 = 1%2F%281+000+000+000+000%29

Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.


As a decimal fraction,  10%5E%28-12%29  is


    zero, then decimal dot (.), then  11 zeroes, then 1.