Yet another question about the double slits

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The discussion centers on the double-slit experiment involving electrons and the concept of observation in quantum mechanics. It is established that the presence of a lamp, which emits photons, can affect the outcome by collapsing the wavefunction, regardless of whether the physicist is present. The experiment demonstrates that observation, defined as any interaction that can determine the state of a particle, leads to the destruction of the superposition state. The experiment is confirmed to be conducted with electrons.

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Apparatus: Electron source + double slit + screen + lamp.

If the lamp is left turned on but the physicist leaves the room for an hour, does he see an interference pattern when he returns?

(Sorry if this simple question has been done before)
 
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The result of the experiment has nothing to do with whether the physicist is in the room or not.
 
I see. So the photons simply destroy the superposition state, which is equivalent to an observation, collapsing the wavefunction.

Thanks
 
Is this double-slit experiment done with photons or electrons?
 
So after reading about quantum theory awhile ago, I inevitably came across the infamous double slit experiment, and I understand the concept, how the act of "observation" collapses the wave function of that which is fired through the slits, but what I did not understand fully, is what constitutes an "observer" or "observation" exactly? I know measuring where an electron is while going through the slits collapses the wave function, but what else would?
 
diazona said:
Is this double-slit experiment done with photons or electrons?

Electrons.
 

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