This Topic Contains GCSE Physics All Topics  Electromagnetic
Radiation  Bookmark and Share  Although the electromagnetic
spectrum is made up of many different waves with different
properties, they are all electromagnetic radiations.
Electromagnetic radiations can be considered as a stream of
photons. Photons are particles of zero mass and charge which
travel in a wave like pattern at the speed of light. Each photon
has a certain quantity or pattern of energy.  Thus a beam of
electromagnetic radiation delivers energy in photons and the
difference between the various electromagnetic radiations is the
amount of energy within the photons they possess.
Electromagnetic radiations with high frequencies such as gamma
rays and X-rays have photons of high energies whereas
electromagnetic radiations with low frequencies such as radio
waves have photons of low energies. The energy delivered by each
electromagnetic radiation beam increases with the frequency of
the electromagnetic wave.  Intensity of an Electromagnetic R