Page 13 - form 5 physics chapter 1
P. 13
Observation (b) Narrow gap
(a) Wide gap
The waves are bend only at the The waves are circular and appear
edges after passing through the to originated from the small gap.
gap. The effect of diffraction is obvious
The effect of diffraction is not
obvious
Straight water wave propagate
towards an obstacle.
As the size of the gap or obstacle is smaller , the effect of diffraction
becomes obvious.
13
