write an activity to show light travels in straight line
take a pipe
place a candle at one corner of the room
now look through the pipe
we can see the candle
now bend the pipe and look
can't see
this is called rectilinear propogation of light
write an activity to show light travels in straight line
take a pipe
place a candle at one corner of the room
now look through the pipe
we can see the candle
now bend the pipe and look
can't see
this is called rectilinear propogation of light