The discussion centers on the double slit experiment and the behavior of photons after passing through the slits. It is established that if a photon has already passed through the slits, removing the slit screen or closing both slits does not affect the photon’s trajectory. Consequently, the photon will still hit the second screen, resulting in a detection consistent with its initial passage through the slits, regardless of subsequent changes to the slit configuration.
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alikim said:What is detected on the second screen if after a photon went through the slits but before it hits the second screen, the screen with slits is removed (or both slits are closed)?