why light travels only in straight path
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In a dusty atmosphere it is sometimes possible to see light travelling and it does appear to be moving in a straight line. The fact that light travels can be demonstrated by putting an object in its path. ... As light does appear to travel in straight lines then light is usually modelled as straight lines in drawings.
Hope it helps uh... :-)
scarlet82:
but has'nt it have and law behind it we says that light always travel in straight path when?
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