Lesson 1/Learning Event 3
Learning Event 3:
1. All forms of radiant energy are classified according to their
wavelengths and frequencies. A wavelength is the distance from the crest of
one wave to the crest of the next wave which is measured in nanometers
There are other units of measure such as Angstrom Units, Microns,
etc. for the measurement of a wavelength. Frequency is the number of waves
that pass a given point in each second (fig 1-8).
various forms of radiant energy (fig 1-9), such as gamma rays, x-rays, light
consist of light rays with wavelengths from 40C to 700 nanometers.
primary colors used in photography are Blue from 400 to 500, Green from 500
to 600, and Red from 600 to 700.