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(Solved): In order to produce a double slit interference pattern the light from the two sources, in this case ...
In order to produce a double slit interference pattern the light from the two sources, in this
case slits, must be coherent. For example if two laser pointers are overlapped, no interference
pattern will appear.
Young demonstrated double slit interference at the start of the 19th century. Which of the
following is correct?
He didn't see interference, his experiment was a though experiment that could only be carried out
after the invention of the laser.
He used a single slit to illuminate the double slit.
He used a prism to select only yellow light.
He used light from a flame.