Abstract
A method for a measurement of the speed of light is described. It is used a combination of simple, low-cost experiments. We will try to measure the wavelength and frequency of light and then we will determine the speed of light using the fundamental equation of wave. The measuring of wavelength based on the phenomenon of light interference or the phenomenon of light diffraction. The measuring of frequency based on the fact that the energy of a photon is proportional to the voltage needed to cause electrons to flow. The experiments are accessible to upper secondary school (or to college) students and particular to non-major science or engineering students. Experimental setup and equipment details are given. Also limitations of the method and experimental results are analyzed.
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