Question

why do we not see the phenomenon in case of waves emitted by a candle.​

Answer 1

Answer:

In case of candles we can't say that the sources are coherrent.

i.e. in same phase, their angular frequencies w can be different which will make a pattern dependent on time and our eyes can't see the pattern formed clearly . The avg intensity becomes 2I because cosθ=0.

And if candles are replaced by light sources, interference happen due to coherrent sources.

Answer 2

Answer:

To set up a stable and clear interference pattern, two conditions must be met: The sources of the waves must be coherent, which means they emit identical waves with a constant . Let's say we have two sources sending out identical waves in phase. It was a difficult experiment since his source was not even close to being .

Explanation: