Energy, Light waves transfer, Duality of light, The fact that light travels in waves and photons, Vacuum, Unlike sound, light can travel in the ..., Wavelength, The distance between 2 consecutive crests ofa wave, Transverse, Light travels in ............ waves (over photons), Period, The time taken to complete one cycle is called, Frequency, The number of cycles per each second is called, Hertz, The SI Unit of Frequency is, regular reflection, When light bounces off a smooth surface (e.g., a mirror) it undergoes

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