| At some point after its formation, the black hole emits a flare of superheated gases, travelling at relativistic speeds. |
| When hit with light, the quantum dot emits a particular color based on its size. |
| When concealed in the ceiling, the luminaire emits light through a slot at the ceiling's edge which is directed down onto the wall by mirror. |
| The sun emits visible light, heat, ultraviolet rays, radio waves, and X-rays. |
| The radioactive glucose emits gamma rays which are then detected by the scanner. |
| When it is dug up it emits the piercing scream, signalling its discovery to the aliens. |
