Which of the following experiments demonstrates the fact that the mere act of observation, or detection, causes changes in the microscopic world?
A) The electron double- slit experiment with a detector placed behind one of the slits.
B) The photoelectric effect that results from the detection of light.
C) The interference pattern that is detected on the screen in the electron double- slit experiment.
D) The detection of radioactive decay using a Geiger counter.
E) None of the above.

Question

Quizplus · Accepted Answer

The electron double-slit experiment with a detector placed behind one of the slits shows that observing which slit an electron passes through collapses the wave function, changing the interference pattern.

Which of the Following Experiments Demonstrates the Fact That the Mere