Explain whether there would there be more or fewer configurations available for the gas if the particles were distinguishable than in the case of bosons where the particles are indistinguishable. How did Einstein conclude that the speed of light is unsurpassable? What ...
After all, light travels in straight lines and bounces off a mirror much like a ball bouncing off a wall. No one had actually seen particles of light, but even now, it's easy to explain why that might be. The particles could be too small, or moving too fast, to be seen, or ...
Light behaves as both particles and waves at the same time, and scientists have been able to observe this duality in action using an ultrafast electron microscope. The wave nature is demonstrated in the wavy upper portion, while the particle behavior is revealed below, in the outlines showing e...
Light is a type of electromagnetic radiation visible to the human eye. It is made out of little packets called photons. Photons behave like particles in some ways and like waves in other ways. If you shine a beam of light at a mirror, for example, it bounces off of it just like a b...
~225 000 km/s inside the eye. The ratio of the speed of light in a vacuum to that in a medium is the ‘index of refraction,n.’ Just a few months ago, a team at the Ecole Politechnique Lausanne alleged that they had produced the first photograph of light particles and waves!
Light travels directly through water, with little reflection and scattering, and the colour does not change. Milk in water is a suspension of fat and protein particles[微粒] in water. The suspended particles should change the colour of the light in the bottle or glass to a bluish[带蓝色的]...
First we examine the equation for elastic waves on a linear chain, the simplest example of a quantized medium, and propose, on its analogy, a nonlinear p-k relation p = k (sinh k l)/ k l for light and material waves. Here, k l is a new variable which represents the space-...
But when it comes to the physics of the very small, what we see is a wave-particle duality. Sometimes the very small things-- we're talking electrons and protons here-- behave like particles and sometimes they behave like waves. Flip-floppers. For example, if you release an electron, it...
These hypothetical particles are among the top contenders. They would have mass and interact via gravity and possibly the weak nuclear force, but not with light or electromagnetism, which would make them invisible. Large underground detectors have been trying to catch one of these elusive particles...
you’d intuitively expect from particles, such as, well, electrons. However, this is not the case. Davisson and Garner showed that when you send electrons through the two slits, they illuminate the screen with not just two, but a long alternate pattern of light and dark bands of ...