Behind the Sights and Sounds:
Electromagnetic radiation is a type of energy that acts like a wave while passing through space.
It is responsible for visible light, cell phone communication technology, television and FM radio signals, depending on the wavelength frequency (the distance from crest to crest).
The wave is a disturbance in the electric force field, made up of electrons and protons.
Scientists figured out they could study the make-up of our universe by tracking radio waves back in 1932.
Now, sound waves are a completely different thing altogether.
While electromagnetic radiation require electrons and protons to generate waves, sound does not exist in a vacuum and is a pressure oscillation. These mechanical waves are composed of frequencies within an audible range (generally 20 – 20,000 Hz).
There is no sound in space. The closer you get to the horizon sound becomes more powerful.
Hence, the “frequency horizon” becomes an essential experiential site when considering the origins of sight and sound.