Physics

# How do photons travel?

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###### 2010-12-20 10:18:05

Photons are electromagnetic radiation that propagate at the speed of light (c, approximately 3*10^8m/s) and have both a wave and a particle nature.

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## Related Questions

the photons travel outward from a light source in all directions.

Photons travel outward from a light bulb in all directions.

Photons travel outward from a light bulb in all directions

No, photons do not have weight. Photons are particles, made pure out of energy, which travel at the speed of sound.

Photons do travel in a straight path. To a person observing the photons though they will appear to be curved because of the gravitational field.

If they have room to travel (e.g., you shine the flashlight towards the sky), they can travel on indefinitely.

Photons, our word for the properties of light that make it seem particle-like, are massless and travel about 186,000 miles per hour in a vacuum.

Photons travel at the speed of 3 x 108m/s and nothing in the universe can't cross this limit. So, photons also can not be accelerated.

Electricity can travel through a vacuum by physically transporting electrons and photons.

Light travels in a vacuum as waves of photons. They do not need a medium in which to travel.

Light is composed of photons that travel in a beam. Photons are regarded to have no mass. In conclusion, light is energy - not matter.

Yes, they do. But they sometimes travel a straight line through bent space.

You don't. The only objects that can travel at the speed of light are those that ONLY travel at that speed, like photons or gravitons.

Light exists as tiny "packets" called photons. These photons exhibit both the properties of waves and particles. since it acts like a particle it can travel without a medium.

Photons have no charge, no rest mass and travel at the speed of light throuh a vacuum. Electrons have a charge of -1, have rest mass and are part of atoms.

I am not sure what you mean with "hyper velocity". In a vacuum, photons basically travel at a single speed, known as the "speed of light".

The light leaving a flashlight when it is turned on and then off will tend to move in a straight line. The problem is that there is air that the light will have to move through. The air will scatter or even absorb the photons. Eventually all the photons will be scattered and absorbed. If the experiment was conducted in outer space, the photons would travel a great distance as there is little in the way of particles to scatter the photons. Here on earth, the atmosphere would absorb the energy as there is relatively little of it released from the flashlight.

Gamma particles are photons - or electromagnetic waves. They travel at the speed of light; nothing can go faster than that.

The expansion of space in all parts of our Universe. When a group of photons leave an object (like a super-nova in a distant galaxy), they have a certain wavelength, and a certain distance between the first photons from that super-nova and the last such photons. During their travel, the expansion of space causes the wavelength of the photons to increase (even if they interact with no matter whatsover in their travels), as well as the distance between the first photons to leave and the last photons to leave. If these photons travel for enough time (say, a few 100 million to a few billion years) before they reach a detector on our Earth, the increase in wavelength AND the distance between the first and last photons becomes measurable. The photons have a wavelength longer than they "should" have, and the time between the first photons to arrive and the last to arrive will increase. The increase in wavelength, as well as the increase in time for the super-nova to last, will be as predicted by Hubble's Law.

A photon. Neutrinos have mass and therefore must travel at less than the speed of light. Photons of light travel at the speed of light.

Speed is how fast something moves. Light is a form of energy carried by massless photons, these photons move at the speed of light, which is the fastest speed that anything in the universe can travel.

UV rays are a part of the electromagnetic spectrum, which includes light, radio, x-ray, infrared, and other "waves". All of these travel through space as photons. Photons behave both as particles and as waves. Their particle nature lets them travel through space, where there is nothing to conduct them, as a wave would normally need.

Not many things have no mass however Photons (Light Particles) have no mass and therefore they travel at the speed of light.

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