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De circuli magnitudine inventa summary5/18/2023 ![]() The wavelength of the light determines its characteristics. ![]() (More on Roemer and Maxwell at bottom of pages) Maxwell (1850’s) showed that light is energy carried in the form of opposite but supporting electric and magnetic fields in the shape of waves, i.e. Roemer (1680’s) was the first to measure the speed of light using Jupiter’s moons -> c=299,790 km/sec or about 185,000 mi/sec How do you transport energy? Answer = wavesĮlectromagnetic Radiation (a.k.a. The law of the conservation of energy means that energy can neither be created or destroyed, only transformed from one form to another. to change the system) and is measured in ergs. Instead, it was defined that energy is a measure of the ability of a physical system to perform work (i.e.
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