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So Einstein proposed that these light quanta were, in fact, real particles that could account for a few reasons and unexplained experiments having to do with knocking electrons off of metals and gas molecules. He turned out to be right on all counts, and got a Nobel Prize for his work. But that's a story for another day. Learn about Albert ...
Einstein was fascinated by the nature of light. In 1905, nearly a decade after this first "thought experiment," Einstein answered these questions with his Special Theory of Relativity. The theory, which revolutionized our understanding of time and space, is based on Einstein's astonishing recognition that light always travels at a constant ...
Dec 10, 2023 · To Lenard's surprise, he found that \(V_{stop}\) did not depend at all on the intensity of the light! Doubling the light intensity doubled the number of electrons emitted, but did not affect the kinetic energies of the emitted electrons. The more powerful oscillating field ejected more electrons, but the maximum individual energy of the ejected ...
Mar 17, 2005 · Whether from the Sun or an incandescent light bulb, light was known to be a wave; that is, a succession of equally spaced crests separated by equally spaced troughs where the distance between the ...
Mar 12, 2024 · Suppose someone reading his 1905 paper wanted to interpret it by saying that Einstein's so-called particles of light are simply short wave-trains that only occupy a small region of space. Comparing the wavelength of visible light (a few hundred nm) to the size of an atom (on the order of 0.1 nm), explain why this poses a difficulty for reconciling the particle and wave theories.
Jan 19, 2023 · Figure 9.2.1: The Experimental Setup for the Photoelectric Effect. The photoelectric experiment allows us to test the wave model against the particle model, for this particular setup. As an experimenter, we have control over both the intensity of the light and the frequency of the light.
When light exchanges energy with matter it behaves as a particle - called the photon The energy of a photon is proportional to the frequency of light. E. photon = hf. Where h is a universal constant called Planck’s Constant. h=6.626x10-34J• s. The first evidence for the particle nature of light comes from. Planck’s Theory of Black body ...
