![]() ![]() In fact, we categorize light of different frequencies into groups due to its various properties that arise. The light that we experience every day is made up of many photons in a range of frequencies, so we don’t notice the quantized nature of light any more than we notice the individual atoms in everyday materials. So the smallest amount of energy in light is different for each type of light. We just concluded that each photon is an indivisible quantum of light, but photons of different frequencies contain different amounts of energy. Again, the models make different predictions. In the wave model, a greater brightness would indicate a larger amplitude wave we would conclude that greater intensity waves have the ability to transfer larger amounts of energy into another system. Using the particle model, we conclude that the brightness of the beam does not influence how much energy any particular photon can transfer to another system. Thus, more electrons are ejected, but each ejected electron still has the same kinetic energy. In the particle model, we would describe this as adding more photons to the beam, but each particular photon still only carries a certain amount of energy. Next, consider the action of increasing the beam's intensity. Clearly, the two models lead to different hypotheses. The energy in a wave is related to its amplitude, so it would seem both light beams must have equal ability to transfer energy. But in the wave model, the same intensity of each beam means they must have the same amplitude. This tells us that the beam with the higher frequency has fewer photons. But if the intensities of the beams are same, the total energy transferred by each beam is the same. Thus, the high frequency beam is capable of transferring larger amounts energy into another system. \( \newcommand, we conclude that the beam with the higher frequency has photons with higher energy. ![]()
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