Light Spreading Out

Most recent answer: 06/06/2018

Q:
if light waves travels in straight line,how they can be spread in all direction?
- sarwangi (age 17)
A:

Great question. Light doesn't travel exactly in straight lines. It's a wave. llke ripples on a pond. So that's how it spreads. If the wave is already very spread out compared to the size of the ripples, then the growing spread may not be very noticeable, so it seems to travel in a straight line.

Mike W.


(published on 06/06/2018)