What is a photon exactly?

What happens to the photon inside the Sun?

  • I read in a popular science magazine that the photon takes 100000 years to get from the center to the outside of the Sun. This provokes some questions about the nature of photon and the conditions inside the star, not explained in the article: What happens to photon on its way? What is the curve of its speed related to the distance from the core? Is the gravity (curve of time-space) the main factor slowing down the journey? How about dispersion, reactions, transformations (change to energy)? Scientific minds, please speak in terms as lay as possible ;)

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The energy is released at core and goes through a process were it hits a particle is absorbed and released in a completely random direction. After its released it hits a nearby particle and does the same, random direction. This happens over and over again until the energy is released from the star. Look up a simulation of this.

The energy is released at core and goes through a process were it hits a particle is absorbed and released in a completely random direction. After its released it hits a nearby particle and does the same, random direction. This happens over and over again until the energy is released from the star. Look up a simulation of this.

Anthony Dewar

Gravity has very little to do with the case. That photon is bouncing around between excited electrons and stripped nucleii, transfering energy and delayed for nanoseconds by each, and it's path is nothing like a straight line or a smooth curve. It probably travels something like 99,000 Light years within the Sun before escaping.

Gravity has very little to do with the case. That photon is bouncing around between excited electrons and stripped nucleii, transfering energy and delayed for nanoseconds by each, and it's path is nothing like a straight line or a smooth curve. It probably travels something like 99,000 Light years within the Sun before escaping.

Irv S

I'm having trouble with this question for the simple reason that I cannot envisage a photon traveling from the center to the outside of the sun without colliding with something and being absorbed. If you are talking energy (heat) migration, the rate of migration will be slow because conduction is slow. Obviously convection will be a faster route for energy transfer but even that is "slow" as well, largely because of the distances involved. I cannot see radiant energy being of much importance within the sun, and to me when you are talking photons, you are talking radiant energy transfer. The glow (light) inside never makes it to the surface. The sun is opaque in that sense. So, you see, I don't get what it is you want to know. Perhaps I am being ignorant. Sorry.

I'm having trouble with this question for the simple reason that I cannot envisage a photon traveling from the center to the outside of the sun without colliding with something and being absorbed. If you are talking energy (heat) migration, the rate of migration will be slow because conduction is slow. Obviously convection will be a faster route for energy transfer but even that is "slow" as well, largely because of the distances involved. I cannot see radiant energy being of much importance within the sun, and to me when you are talking photons, you are talking radiant energy transfer. The glow (light) inside never makes it to the surface. The sun is opaque in that sense. So, you see, I don't get what it is you want to know. Perhaps I am being ignorant. Sorry.

busterwasmycat

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