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In this short video, from the Institute of Physics and the National STEM Learning Centre and Network (https://www.stem.org.uk/), Michael de Podesta explains ...
Simple Laser Diffraction Experiment at Home: Long story short: You will learn how to observe interference patterns at home (using the cheapest laser point you got). I will also teach you how to use your laser to measure tiny objects, like the width of your hair!!
For instance, the following are some real-life examples of diffraction: 1. Compact Disk. 2. Hologram. 3. Light entering a dark room. 4. Crepuscular Rays. 5. X-Ray Diffraction. 6. Water passing from a small gap. 7. Solar/Lunar Corona. 8. Sound. 9. Ring of light around the source. 10. Signal Propagation. 1.
Shine it at a couple of closely-spaced double slits and project the diffraction pattern onto a distant screen. Make some measurements and use Young's Equation to determine the wavelength of light. Repeat your measurements and calculations for all three lasers and check your answers.
Experiment with diffraction through elliptical, rectangular, or irregular apertures. Make waves with a dripping faucet, audio speaker, or laser! Add a second source to create an interference pattern.
Diffraction is most noticeable when the obstacle is similar in size to the wavelength of the light. When light waves diffract around obstacles, they overlap each other. This overlap results in constructive and destructive interference at different locations, producing an interference pattern.
Diffraction of light. for 14-16. These experiments enable students to understand and use the diffraction grating, an instrument of enormous importance to physicists.
