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.

Bioluminescent cells produce light that cancels the shadow cast by their large eyes.

They produce light that goes through the fibers to the eyeglasses' frames, at the back of the ears.

Certain substances produce light when they are illuminated by more energetic radiation, a process known as fluorescence.

The secondary low over Indiana produced light to moderate snowfall that extended to Wisconsin.

It produced enough light to show an enormous emerald flashing on Neena's left hand.

A lamp can produce higher luminous intensity either by producing more light, or by focusing it tighter.

But (1) electron may not be sufficient to produce light as it bombards the atoms in the filament.

An oil lamp is an object used to produce light continuously for a period of time using an oil-based fuel source.

They produced more light than the Rebel line which replaces them.

Some enzyme reactions produce light and this can be measured to detect product formation.