Q&A

Can you store light in a box?

Can you store light in a box?

Can you store light as light itself? Sure. Suppose you had a box that was made of material that is 100\% reflective inside. You open the box, shine some light into it, close the box, and voila.

Could you trap light in a mirror box?

You can’t trap light in a mirrored box, as there are no perfect mirrors (complicated dielectric mirrors can get to 99.999\% reflectivity, but only for a very small region of the spectrum).

Can you trap light particles?

A theoretical physicist has explained a way to capture particles of light called photons, even at room temperature, a feat thought only possible at bone-chillingly cold temperatures. Usually, it happens at extremely low temperatures — less than a micro-kelvin, or a millionth of a degree above absolute zero.

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Can you catch light?

There are several ways to “trap” a beam of light — usually with mirrors, other reflective surfaces, or high-tech materials such as photonic crystals. But now researchers at MIT have discovered a new method to trap light that could find a wide variety of applications.

Can you capture a photon?

The only thing we can do is catch or absorb the energy of a photon. So, capturing a photon is only possible if “capture” is defined as catching or absorbing the energy of a photon. Q: Can we capture a photon? Answer : yes, that’s what is done with laser.

Can you capture light in a bottle?

Blocking light is one thing, but stopping it and then releasing it so that it continues the way it began, is quite another. They have, in some sense, captured light in a bottle. The researchers found that the light actually crumples up like an accordion and pack itself into the bunch of atoms.

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Can you trap sound?

Sounds kinetic energy can be passed from one object to another, this is why you cannot trap sound in a container, as it would simply make the container vibrate, and thus, you loose all the trapped sound.

How do you trap light in a mirrored box?

You can’t trap light in a mirrored box, as there are no perfect mirrors (complicated dielectric mirrors can get to 99.999\% reflectivity, but only for a very small region of the spectrum). On the other hand, it is possible to “trap” light by slowing it down.

Is it possible to trap light?

The good news, our fact checkers inform us, is that the actual answer is also yes—though to truly understand how scientists can trap light, and even move it from place to place, would require a degree in physics, which, sadly, we don’t have. We’ll give this our best shot, though. “You can store light for a fraction of a millisecond or so.”

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How can light pass through a hole in a mirror?

To get that effect the hole in the mirror that light enters can’t be much over 40\% the area of the cross-section of the mirror. (The mirror is a 3D structure and the inside is a mirror surface; light that enters the hole must be reflected at a big enough angle to miss the hole but instead hit another mirror on the inside.

Is it possible for a photon to be perfectly trapped?

More generally, the absorption by the inevitably imperfect mirrors is still the fastest process that makes the vision about the trapped photon impossible. Within the time scale before the light gets absorbed, the photon may be considered almost perfectly trapped because all other effects that violate it are negligible in comparison.