- #36
rrogers
- 140
- 8
Concerning the original question: Have you tried youtube? For instance
The "Poor man's double slit setup" is a simple and inexpensive experimental setup that demonstrates the wave-like behavior of light. It involves shining a laser or light source through two narrow slits and observing the interference pattern created by the light waves passing through the slits.
The setup works by allowing light to pass through two narrow slits, creating two coherent sources of light waves. These waves then interfere with each other, creating an interference pattern on a screen placed behind the slits. The pattern is a result of the constructive and destructive interference of the waves, demonstrating the wave-like nature of light.
The materials needed for the setup include a laser or light source, two narrow slits (such as razor blades or thin wires), a screen to capture the interference pattern, and a support structure to hold the slits and screen in place. Optional materials include a ruler or protractor to measure the distances between the slits and the screen.
The setup can be used to demonstrate the wave-like behavior of light, as well as concepts such as interference and diffraction. It can also be used to measure the wavelength of light, as the distance between the slits and the interference pattern can be used to calculate the wavelength.
While the setup is a simple and effective way to demonstrate the wave-like behavior of light, it does have some limitations. The interference pattern may be difficult to see with low-intensity light sources, and the slits must be very narrow and evenly spaced for the pattern to be clear. Additionally, the setup may not work well with non-coherent light sources, such as a regular lightbulb.