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The complete history of the Universe -- from the Big Bang to 200 my into the future

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History of the Universe eBook. 398 pages, 300 illustrations only $2.99

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Small Numbers’ Names

Small numbers are written by scientists like this: 1.23*10-45. This means that you must move the decimal point 45 places to the left to get the correct number.

See the page Large Numbers for information on numbers greater than 1.

Some small numbers are used so often that scientists give them names. These names are part of the metric system. So millimeter is one thousandth part of a meter.

prefix

symbol

multiply by

deci

d

10-1

centi or cent

c

10-2

milli

m

10-3

micro or micr

µ

10-6

nano

n

10-9

pico

p

10-12

femto

f

10-15

atto

a

10-18

zepto

z

10-21

yocto

y

10-24

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History of the Universe eBook. 398 pages, 300 illustrations only $2.99

eBook only $2.99
398 pages, 300 images

"I find the science fabulous...an extremely useful teaching tool."
Professor David Christian

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