Sun, torch, star :)
The three sources of white light are the sun, incandescent light bulbs, and fluorescent light bulbs.
-- fireflies -- campfire -- stars -- match -- compact fluorescent light
The 3 best and simplest ones are the moon,lightning and the sun.
The three natural sources of heat and light are the sun, fire, and lightning. These sources provide heat and light through processes such as nuclear fusion, combustion, and electrical discharge.
The sun, the moon, and stars are three natural light sources.
Electric bulbs, fluorescent lamps, and LED lights are three examples of man-made sources of light commonly used in indoor and outdoor settings.
People, computers and light bulbs.
Three artificial sources of light include incandescent bulbs, which produce light by heating a filament; fluorescent lamps, which use electricity to excite mercury vapor and produce ultraviolet light that is then converted to visible light; and LED (light-emitting diode) lights, which emit light when an electric current passes through a semiconductor. Each of these sources has various applications in homes, offices, and outdoor settings.
water bill heat bill and light bill
The sources that can give out their own light are "Light Sources" and the same opposite the sources which can not give out their own light are know as Non Light Sources .
light bulb laser head lights on car
The two main sources of light energy are natural light from the sun and artificial light from sources like light bulbs and lamps. Both sources produce electromagnetic radiation that our eyes perceive as light.