4. General Relativity |
| Einstein’s Theory of general relativity relates gravity to the fabric of space-time, allowing light to bend as it passes near heavy things |
| Space-Time Sheet – use a spandex sheet it is possible to show a heavy mass in the center of the grid distorting space-time. Rolling smaller balls past the mass, within the well but not into the mass, will illustrate the deflection of light that appears in an intense gravitational field. This deflection also lends itself to supporting the particle nature of light |
| Space-Time is the unification of space, the three dimensional world around us, and the concept of time. These seemingly immiscible ideas must meet to explain the nature of light. Space and time are not absolutes: 10 seconds is not always 10 seconds and a cubic centimeter is not always a cubic centimeter. The speed of light in a vacuum is the only absolute. |
| 3 Minutes |
| 3rd – 4; 5th – 6 |
1. Light Diffraction
2. Photo-Electric Effect
3. Photo-Electric Effect in Action
4. General Relativity
5. Speed of Light
6. Color Mixing
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| Download
Teacher Guide (PDF 4.5 MB) |
