Purpose: To demonstrate how the frequency of radiation is associated with the temperature of the radiator.

*Demonstration not currently available in CHEMP 130.

If you need this demo sooner rather than later let me know and I'll move its priority up.

Place the metal "slide" in the projector and place the diffraction grating in front of the projector. After focusing a pattern on the screen, the instructor can vary the temperature of the bulb with the Variac and thus change the color spectrum produced by the grating. The projector must be properly focused to see the change in the spectrum. You can do so by focusing the undeflected image of the slit on a screen that is the same distance from the projector as is the screen on which you view the spectrum.

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