convert decimal to scientific notation
This converter keeps the digits the input declares: 0.00500 becomes 5.00 × 10⁻³ (3 significant figures), not 5 × 10⁻³. The rule depends on how the number was typed, with or without a decimal point, not only on its numeric value.
The explicit decimal point makes the converter count the coefficient's 3 digits (5, 0, 0) and keep them in the output, instead of dropping the zeros.
The coefficient read before the "e" has 4 digits; the decimal form expands exactly to 1200, without losing any of them.
With no explicit decimal point, the trailing zero is ambiguous by convention; to keep it, type "36000." with the point at the end.
It is a way to write numbers as a × 10ⁿ, where the coefficient a is between 1 and 10 (in absolute value) and n is an integer (positive, negative or zero).
Because the input has an explicit decimal point, which makes the converter count the coefficient's 3 digits (5, 0, 0) and keep them in the output: 5.00 × 10⁻³, instead of dropping the two zeros that signaled the original measurement's precision.
Yes: the converter reads the coefficient before the "e" (here "1.200", with 4 digits) and keeps that count in the output, 1.200 × 10³, with the decimal form expanding exactly to 1200.
Because a trailing zero in a whole number with no decimal point is ambiguous by convention: it may or may not have been measured. An explicit point at the end, as in "36000.", signals that all 5 digits are significant, and the converter returns 3.6000 × 10⁴ instead of 3.6 × 10⁴.
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