Light from the red end of the spectrum penetrates deep water better than light from the blue end of the spectrum.
Evidence: Algae that live in deeper water have chlorophylls with absorbance peaks in the infra-red part of the spectrum.
The lowest depth of a wavelength is the crest.
The lowest point in a wavelength is called a trough
lowest wavelength
The longest visible wavelength of light appears red. "Longest wavelength" is equivalent to 'lowest frequency'.
In the "visible" light it is violet.
Radio waves
The energy of EM radiation depends on its frequency, and the lowest frequency corresponds to the lowest energy. Radio waves are at the low end of the energy and frequency spectrum.
-- longest wavelength -- lowest frequency
Wave speed = (wavelength) x (frequency) "Depth" (?) is not involved.
the lowest frequency Lester was here
lowest wavelength
the lowest depth of the lechuguilla cave is 1,600
The longest visible wavelength of light appears red. "Longest wavelength" is equivalent to 'lowest frequency'.
In the "visible" light it is violet.
That's blue light.
Radio waves
Electromagnetic waves
Radio Waves. Their wavelength is 103 meters (1 kilometer). Because of this, their waves have the lowest frequency.
Provided you compare waves that all have the same speed, the longest wave has the lowest frequency.