A longitudinal wave that is caused by vibrations and that travels through a material medium
Slow vibrations of frequencies lower than 20hz
Any sound wave with frequencies higher than 20,000 Hz
A phenomenon that occurs when two objects naturally vibrate at the same frequency
Sound navigation and ranging, a system that uses acoustic signals and echo return to determine the location of objects or to communicate
A unit or quantum of light
The rate at which energy flows through a given area of space
Radio detection and ranging, a system that uses reflected radio waves to determine the velocity and location of objects
A line in space that matches the direction of the flow of radiant energy
An image that forms at a location from which light rays appear to come but do not actually come
An image of an object formed by light rays that actually comes together at a specific location
A mirror that is curved inward like the inside of a spoon
convex mirror gives you a wider scope of view.
the science of musical sounds.
physics Compare forcing frequency the frequency at which a system vibrates when set in free vibration
the lowest frequency at which a medium will freely oscillate.