microphone - converts sound waves to audio-frequency signal, microwaves - higher frequencies compared to radio waves, x-rays - have short wavelengths and high frequencies and very penetrating, gamma rays - high-energy waves produced from nuclear reactions, ultraviolet wave - invisible radiation that lie beyond the violet end of the visible spectrum , infrared waves - waves that lie in the region beyond the red end of visible spectrum , radar - another application of microwave , phototheraphy - the use of light in medical treatment, reflection - bouncing off of light rays when it hits a surface like a plane mirror , curved mirror - reflecting surface in which it's surface is a section of sphere,

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