This oscilloscope, which measures the voltage of the wall electrical outlet, shows a frequency of 59.
It is commonly used in nanotechnology, the building of extremely small machines.
Wavelength Different types of waves exist in this world, from ocean waves caused by the wind to electromagnetic waves.
Like with hearing where we react to the frequencies, the sound pressure level, and the duration of the sound, in the vision we gather information about color from the frequency and the wavelength in combination with other complex factors.