LEDs and lighting design: What you need to know about photonsJohn Donovan
But now, for the first time, a Stanford-led team has created a pseudo-magnetic force that can precisely control photons. In the short term, this control mechanism could be used to send more internet data through fiber optic cables. In the future, this discovery could lead to the creation...
Pigment molecules are associated with proteins, which allow them the flexibility to move toward light and toward one another. A large collection of 100 to 5,000 pigment molecules constitutes an "antenna," according to an article byWim Vermaas, a professor at Arizona State University. These struc...
What causes wind to blow? Why are comets icy, but asteroids are rocky? What causes a star to move off the main sequence? Explain how redioactive decay has always warmed the Earth from the inside and how nuclear fusion has always warmed the Earth from the outside.Explore...
What causes a star to move off the main sequence? The Earth constantly receives radiant energy from the sun and gets warmed up. Why does the Earth not get as hot as the Sun is? The light from the Sun is essential for...
how to avoid the solution of the quantum electronic problem with empirical potentials, already alluded in Sect.2(see also AppendixA); Next, we move to discuss how Newton’s dynamics can be modified so as time averages along the trajectory is consistent with the average of other ensemble than...
Huge tubes of gas circle the sun's interior at high latitudes and begin to move toward the equator. When they roll against each other, they form spots. When they reach the equator, they break up and sunspots decline. Solar Prominences Occasionally, clouds of gases from the chromosphere ...
American theoretical physicist John Wheeler succinctly described the effect of general relativity as such: "Matter tells space-time how to curve, and space-time tells matter how to move." But, the curvature of spacetime doesn't just affect matter; it affects light too, meaning that light always...
One of the simplest ways to see this is to delay a coherent stream of photons by half a wavelength and then send that wave together with the original wave. The interference causes the 2 waves to "appear" to disappear. They don't really of course disappear, but the point it makes, and...
Theatomsinside a solid material can experience friction as well. For instance, if a solid block of metal gets compressed, all the atoms inside the material move, creating internal friction. In nature, there are no completely frictionless environments, according to theAmerican Physical Society: even...