Hey everyone, if you have a flashlight with either 1 or 3 LEDs on, will the light intensity detected by the photosensing device increase threefold, and thus the voltage would increase threefold? Thanks. 

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Light intensities released by LEDs are different ... I mean more than 20% different.

Try Simple double slit diffraction http://web.mit.edu/.../coursenotes/modules/guide14.pdf

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