We now have a quantum superposition of light and excited matter states, so, although many people would call me pedantic, this isn't really light proper. These cookies will be stored in your browser only with your consent. This means a blue photon carries more energy than a red photon, so a red laser emitting the same power as a blue laser will emit more photons of less energy. This website uses cookies to improve your experience. All those classical frequencies come from beat frequencies between quantum states with different frequencies (or, you could say, energies). rev 2020.10.9.37784, The best answers are voted up and rise to the top, Physics Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. You also have the option to opt-out of these cookies. "Is there a way to record the temperature of a photon? If farther experiments could be done to farther slow down photons would photons as they are increasingly slowed start to increasingly loss mass (fade) until they almost do not move and virtually disappear until they stop and do disappear ? That sounds like it means that a state with one photon (or any other definite number) would not have an oscillating electrical field. Many experiments looking for this ether failed to find it. Why is c "limited" to 186,000mps? i mean why cant a photon be used to accelerate a electron to light speed? This sounds like photons cease to exist if they were "stopped" . Suppose you and your sister travel at different speeds in space and you note a slowing of her clock. leading up to my question are thoughts regarding what I have read previously. This is one of those simple-sounding questions whose answer will have to go deep into the unfamiliar world of quantum mechanics. Can entrophy decrease inside black holes? That weight just depends on one property of the photon: energy, hf. Also⦠Shouldn't the photons have had plenty of time to catch up and pass the neutrinos if they travel slightly faster? "How do you know what is happening entropy-wise inside black holes? " My first question comes from the understanding (from Brian Greene's The Elegant Universe, pg. Maxwell discovered how light travels through vacuum. Classically you can think of this as like a game of "Whisper Down the Lane": an atom of the medium absorbs light, dwells in an excited state, then re-emits a new photon. Light undergoes bending or slowing down, when entering a denser medium, from a rarer one and speeds up when entering a rarer medium, from a denser one. Quantum mechanics is the science of the very-small things. It has also been explained that in science if there is an observation then more of the same observations could be applied.
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