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Singh, Sushil Kumar; Kashyap, Jaya Shivangani; Rajwani, Priyanka; Kaur, Savinda – Physics Education, 2019
Understanding reflection and refraction are an integral part of school and college learning. In nature even birds and fish (Archer fish) very skillfully use refraction to strike down prey present above or below the water surface. Fermat's principle allows one to look beyond the reasons behind the laws governing the reflection and refraction. A…
Descriptors: Scientific Concepts, Scientific Principles, Computer Assisted Instruction, Science Experiments
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Kraftmakher, Yaakov – European Journal of Physics, 2008
The "quantum efficiency" (QE) is an important property of a light detector. This quantity can be determined in the undergraduate physics laboratory. The experimentally determined QE of a silicon photodiode appeared to be in reasonable agreement with expected values. The experiment confirms the quantum properties of light and seems to be a useful…
Descriptors: Physics, Light, Quantum Mechanics, Science Instruction