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20 hours ago · "Light is not sometimes a particle and sometimes a wave," he said. "It is always both a wave and a particle. It's just that we highlight one of the properties depending on which experiment we do."
Mar 12, 2024 · Example 9: Momentum of a photon. According to the theory of relativity, the momentum of a beam of light is given by p = E / c. Apply this to find the momentum of a single photon in terms of its frequency, and in terms of its wavelength. Combining the equations p = E / c and E = hf, we find. p = E / c = h cf.
May 24, 2024 · Mathematics and experiments show that light is a transverse wave – the electric and magnetic field vectors point in directions that are perpendicular to the direction of motion of the light wave (and as it turns out, they also rare always perpendicular to each other). Figure 2.1.1 – Electromagnetic Wave. The red arrows in the figure above ...
- Two Worlds
- Light Is A Wave … and A Particle
- Matter Is A Wave … and A Particle
At first glance (and even at deeper glances), waves and particles are very different. A particle is, as best as I can put it, a thing. It's a small, single, finite object. You can hold a particle in your hand. You can throw a particle at someone else and watch it bounce off of them. It's localized. You can point to a particle and say, "Look, the pa...
The problems with this approach started with light itself. In the early 1800s, the English scientist Thomas Young played some games with light by shining some beams through two narrow openings onto a screen behind them. What he found was a classic interference pattern with stripes of varying intensity on the screen. This is exactly what water waves...
In the 1920s, a young physicist named Louis de Broglie made a radical suggestion: Since light has energy, momentum and a wavelength, and matterhas energy and momentum, maybe matter has a wavelength, too. That's something that's easy to say but hard to wrap your head around. What does it mean for matter to have a wavelength? Or was de Broglie just h...
It’s not as odd as it might seem, either. Particles and waves are sometimes conceived as opposites, but they’re not. Also, light is not the only thing that exhibits behavior of both particles and waves. Other quantum entities also have this behavioral duality, and wave-particle duality is a key focus of the study of quantum mechanics.
Dec 15, 2022 · In a sense, light is both wave and particle, and it is neither. This brings us to Bohr’s model of the atom, which we discussed a couple of weeks back. His model pins electrons orbiting the ...
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In Lesson 1, we will investigate the variety of behaviors, properties and characteristics of light that seem to support the wave model of light. On this page, we will focus on three specific behaviors - reflection, refraction and diffraction. A wave doesn't just stop when it reaches the end of the medium. Rather, a wave will undergo certain ...
