Investigate the light emitted by three LED lamps by screening it with single and triple slit systems. Answer the question.
The lights emitted from several light sources merge and do not "interfere" with each other. If, for example, two identical lamps illuminate the paper from the same distance, we see the paper twice as bright.
The following question is the first one the student can answer when doing the experiment. However, he may not realize it or want it, for example, if the matter is quite simple, then perhaps there is no need for it. Sometimes this is not the case, and sometimes you could just check your own thinking. The following experiment can be set up quite easily.