What is 10 10 10 10 9

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In physics, very large and very small numerical values ​​are usually written using powers of the number 10. For large numbers is 10n, with n a nonnegative integer, a 1 with n trailing zeros, for example:

100 = 1 = one
101 = 10 = ten
102 = 100 = hundred
103 = 1000 = thousand
106 = 1,000,000 = one million
109 = 1,000,000,000 = one billion
1012 = 1,000,000,000,000 = one trillion
1015 = 1,000,000,000,000,000 = one quadrillion

Very small fractions can be classified as 10-n, write with n a nonnegative integer. n also counts the zeros here:

100=1=one
10-1=0,1=a tenth
10-2=0,01=a hundredth
10-3=0,001=a thousandth
10-6=0,000001=a millionth
10-9=0,000000001=a billionth
10-12=0,000000000001=one trillionth
10-15=0,000000000000001=a billiard part

Numbers that are not an even power of ten can be written by extracting the power of ten as a factor: This is something like that

1748 = 1,748·1000 = 1,748·103

in calculators also written 1,748E3. As an example of a small number is

0,000.4175.5 = 4,1755·0,0001 = 4,1755·10-4 = 4.1755E-4.