Talk:Frequency/to do

Restructure according to guidelines in WikiProject Science, ie. with the following sections:
 * Introduction : add daily life examples (music, vibration, radio, light)
 * Frequency in practice
 * Types of frequencies: in statistics, frequency modulation, of waves
 * Units of frequency: Hz, per day,...
 * Frequency in everyday life : give examples with typical values: heartbeat, light, radio, sound, computer clock ...
 * Frequency in industry: how to generate various frequencies
 * Frequency in science: how to measure it, interferometry
 * Frequency in theory: period, wavelength, relation to energy in quantum theory, Fourier Transform, frequency of interferences, ...
 * History of frequency : cps → Hertz, relation to quanta, ...