What is "photons"

Usage examples of "photons".

As we turn down the intensity of the light source we now know that we are decreasing the number of photons it emits.

Particles like photons, weak gauge bosons, and gluons are yet other resonant patterns of string vibration.

And just as more dollars result in more children being able to leave, more photons result in more electrons being hit and knocked clear off the surface.

First, you should envision a quantum field as composed of particulate ingredients, such as photons for the electromagnetic field.

And so, it might seem reasonable to guess that wave properties, such as interference patterns, can arise from a particle picture of light provided a huge number of photons, the particles of light, are involved.

On the contrary, two oppositely charged particles also interact through the exchange of photons, although the resulting electromagnetic force is attractive.

When we turn on a flashlight or a laser beam we are, in effect, shooting a stream of photons in whatever direction we point the device.

Regardless of relative motion between the source of photons and the observer, the speed of light is always the same.

A platform observer would still claim that the photons have to travel farther to reach the president of Backwardland than they do to reach the president of Forwardland.

Moreover, just as the dollar-entrusted adult increases the total money thrown down by increasing the number of individual bills tossed, the total intensity of a light beam of a chosen frequency is increased by increasing the number of photons it contains.

You close off the left slit and fire the photons one by one at the barrier.

Naturally enough, you think that this will only increase the number of photons that pass through the slits in the barrier and hit the photographic plate, thereby exposing the film to more total light than in your first run of the experiment.

Somehow, temporally separated, individual particulate photons are able to cancel each other out.

Now, on everyday scales photons act as negligible little probes that bounce off trees, paintings, and people with essentially no effect on the state of motion of these comparatively large material bodies.

Regardless of how gingerly you carry out your determination of the slit through which it passed, photons that bounce off the electron necessarily affect its subsequent motion.