All of life and all matter is the manifestation of energy in motion. Even a solid non-living object such as a chair is comprised of atoms in motion, yet this fundamental aspect of our world cannot be seen with the naked eye, and therefore is often neglected.
Energy takes many forms such as light, heat, sound, electricity, magnetism and nuclear reactions.
The natural energies of the earth, sun and stars sustain, energize and renew us. Without them we could not exist. Radiation refers to energy moving away from its source in wavelengths along the electromagnetic spectrum. In the 1800 s Heinrich Hertz discovered that as energy moved along this spectrum it changed or oscillated in cycles per second. The shorter the wavelength is, the higher the frequency.