sun
stars
fire
Many people think the moon is a source of light, but it only reflects the sun's light.
The sun
A light source generates and emits its own light. A reflector reflects light (i.e. light bounces off of it) from another source. Examples of light sources: The sun, the stars, a lightbulb, a flame, a red-hot piece of metal. Examples of reflectors: The moon, the planets, the ground lit by the sun.
sun stars fire Many people think the moon is a source of light, but it only reflects the sun's light.
An unnatural light source is any source of light that is not produced by natural occurrences like the sun or a fire. Examples include electric light bulbs, neon signs, and LED lights.
iron,Aircon and Oven
An extended source of light refers to a light source that is not a point source, meaning it has a finite size and emits light over an area rather than from a single point. Examples include fluorescent tubes, incandescent bulbs, and the sun.
Source light is light coming directly from a light source/emitter (i.e. a light bulb, the sun, stars, etc.). Reflected light is light coming indirectly from the light source/emitter. That could be reflected, refracted light, etc.
A source of light is an object or device that emits light. Examples of sources of light include the sun, lightbulbs, and candles. These sources produce light through various mechanisms such as combustion, electrical stimulation, or nuclear fusion.
Well I'm sure he knows what light is, so they need to understand what a source is. You tell him/her that a source, is where things come from: embellish however seems good. And of course, a light source, is where light comes from. Some examples: the sun, a light bulb or LED (light emitting diode), or anything that emits photons.
There are natural and artificial light sources. A few examples of natural light sources include the Sun, stars, and candles. A few examples of artificial light sources include light bulbs, lamp posts, and televisions.
Sun Incandescent light bulb LED light panel
Autotrophs that utilize light as their energy source are called phototrophs. These organisms are able to perform photosynthesis to convert light energy into chemical energy for their survival and growth. Examples include plants, algae, and some bacteria.