# Can an object become invisible?

## Can an object become invisible?

To become invisible, an object must do two things: it has to be able to bend light around itself, so that it casts no shadow, and it must produce no reflection. While naturally occurring materials are unable to do this, a new class of materials called metamaterials is now making it possible.

Can a liquid be invisible?

Liquids are made up of tiny (invisible) particles that are in constant motion and roll on top of each other. The boiling point is the temperature at which a liquid becomes a gas. The freezing point is the temperature at which a liquid becomes a solid.

### Why is milk a liquid?

Milk is a typical liquid. A liquid does not have a fixed shape, like a solid; instead it takes on the shape of the container that it is in. Liquids can flow. A liquid has a distinct surface, unlike a gas.

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Can you become invisible if you exceed the speed of light?

Nonetheless… assuming you have some way to exceed the speed of light, such as Alcubierre’s drive, no, you would not become invisible, just as a faster-than-sound airplane doesn’t become inaudible.

#### What happens when you travel at the speed of light?

Travelling at the speed of light is a staple of sci-fi fiction. Whether it’s Captain Picard asking for warp factor 9 or the Flash running so fast he can bend time and space, the result is often a sudden empty space where the hero once stood.

How fast does a ball have to go to become invisible?

In order to become invisible then, the ball would have to go so fast that the brain doesn’t have time to process any light reflecting off it. In an experiment, air force pilots were able to recognise an image of a plane that was flashed on screen for as little as 1/220th of a second.

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## Is it possible to be invisible on the side of the Earth?

After you pass, any light you emit would be visible, although severely red-shifted. It is possible that light could be reflected from you as long as it came from the side. So, no invisibility on that side. , Physics Undergrad. Read up on Relativity.