The ability to start a fire and produce light is also essential.

In this article, we'll see how these parts come together to produce bright light for hours on end.

Space has an abundance of light produced from the Sun.

Soon there is enough energy in the atom to produce light.

This approach will probably be more expensive than producing blue light directly.

"The only reason to produce light is if it can be sensed or used by an animal."

The explosions produce much sound and light, but little harm seems to be done.

They found the quality of light produced by fluorescents was too cold.

The reaction also produces light, usually in the blue or green region of the spectrum.

Combustion is clearly not the only reaction that can produce heat and light.