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| College Science | 3 |
| Laboratory Experiments | 3 |
| Laboratory Procedures | 3 |
| Physics | 3 |
| Chemistry | 1 |
| Electronics | 1 |
| Equipment Utilization | 1 |
| Heat | 1 |
| Instruction | 1 |
| Instrumentation | 1 |
| Lasers | 1 |
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| Amer J Phys | 3 |
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Moen, Allen L.; Vander Meulen, David L. – Amer J Phys, 1970
Describes an advanced laboratory experiment of Fresnel diffraction which uses a He-Ne gas laser as the source and a wire as the opaque diffracting strip. A photograph of the diffraction pattern is compared with the intensity diagram predicted by the Cornu spiral method. Agreement is clear and impressive, although minor differences are detectable.…
Descriptors: College Science, Laboratory Experiments, Laboratory Procedures, Lasers
Fergason, James L. – Amer J Phys, 1970
Describes laboratory experiments designed to demonstrate (1) the properties of cholesteric liquid crystals, (2) thermal mapping, (3) thermal diffusivity, (4) adiabatic expansion of rubber, and (5) measurement of radiated energy by a point source. Contains all of the information on materials and apparatus needed to perform the experiments.…
Descriptors: Chemistry, College Science, Heat, Instruction
Palmer, S. B.; Forster, G. A. – Amer J Phys, 1970
Describes and apparatus designed to generate and detect pulsed ultrasonics in solids and liquids over the frequency range 1-20 MHz. Experiments are suggested for velocity of sound, elastic constant and ultrasonic attenuation measurements on various materials over a wide temperature range. The equipment should be useful for demonstration purposes.…
Descriptors: College Science, Electronics, Equipment Utilization, Instrumentation
