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Sound and Light

Across
The bouncing back of a ray of light, sound or heat
A measure of how high or low a sound is perceived to be depending on the frequency of the sound wave
The process of separating a wave of different frequencies into its individual component waves
A unit or quantum of light a particle of electromagnetic radiation that has zero rest mass
299,792,458
The zooming in or out of an image or object
A longitudinal wave that is caused by vibrations and travels through a material medium
Slow vibrations of frequencies lower than 20 Hz
Any sound wave with frequencies higher than 20000 Hz
The bending of a light ray as it passes from one substance to another of different densities
An image of an object formed by light rays that actually come together at a specific location
Down
A system that uses acoustic signals to determine the location of objects or to communicate
An image that forms at a location from which light rays appear to come but do not actually come
A mirror that is curved inward
343
A system that consists of Two or more plain surfaces of a transparent solid at an angle with eachother
A line in space that matches the direction of the flow of radiant energy
A system that uses reflected radio waves to determine the velocity and location of objects
A phenomenon that occurs when 2 objects naturally vibrate at the same frequency
The rate at which energy flows through a given area of space