Measurement digits have different importance {significant figure}| {significant digit}. Zeroes to left of left-most non-zero digit are not meaningful. If number has no decimal point, zeroes to right of right-most non-zero digit are not meaningful. If number has decimal point, zeroes to right of right-most non-zero digit are meaningful. Zeroes between non-zero digits are meaningful.
instruments
Number of significant digits is number of measured digits, including estimated digit.
products
For calculation results, number of significant digits is smallest measured number of significant digits. Multiplying or dividing measurements must maintain number of meaningful digits.
Physical Sciences>Physics>Measurement>Methods
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Date Modified: 2022.0224