From: BURT on
Wave science extrapolates something that is not true about light. You
cannot align lasers to cancel each other. This extrapolation of peek
and trough cancel never happens in any experiment.
It is a fact. You still have the same energy at the detection screen
in the airy experiment. They only add.

Light energy is conserved even in what looks like cancel. It is time
conserved and tehy only add when they come together.

Mitch Raemsch