Part of a playlist on scientific notation, unit analysis and uncertainty: [ Ссылка ]
Convert diffraction grating spacing of 1200lines/cm to microns per line.
We are given the line spacing for a diffraction grating of 1200 lines/cm, and we want to convert to spacing per line and express the answer in microns (micrometers). We start by taking the reciprocal to get 1cm/1200lines, then we change to meters per line by converting 1cm to .01m. Next, we divide and express the answer in scientific notation. We recognize the power 10^-6 as microns, and express the answer in microns to three significant digits.
