Physics Prac - Mesuring Wavelengths Of Light
This is the first 1,000 characters of 448 words (1.79 pages) in the essay titled Physics Prac - Mesuring Wavelengths Of Light
|Physics Prac - Mesuring Wavelengths of Light
Aim: To determine the approximate value of l for red light using a diffraction kit.
Theory: Diffraction of light is one explanation of the wave theory of light. Francesco Grimaldi first observed this type of behvaiour from light. However, Thomas Young was the scientist that was able to derive a mathematical formula where l can be calculated. The original experiment involved sending white light into a screen with two small holes to serve as point sources. The light from these sources was then projected onto a screen and light and dark bands were observed. The mathematical formula could then be used after taking certain measurements.
Equipment: Light source (Ray box), Red cellophane, Double-slit slide, and Measuring rod (can be already attached to Ray box.
1. Set up the ray box and place red cellophane in clip so that it is over the bulb.
2. Switch on ray box and stand approximately two met...
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