The Sun. The Stars. Forest Fires. Fireflies. Luminous plankton. Molten lava as it spews from volcanoes. Lightning. I'm sure there are lots more - but that'll do for Why is the moon not a source of light? Natural sources of light include the sun, stars, fire, and electricity in storms. There are even some animals and plants that can create their own light, such as fireflies, jellyfish, and mushrooms. This is called bioluminescence. Artificial light is created by humans. A long time ago, the only sources of light that humans had were natural sources, such as the Sun. How different would your life be if the Sun was your only.
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Some living organisms have the ability to produce light too. It is called bioluminescence. It is the effect of certain chemical reactions within the organism. Fireflies, jellyfish, glow worm, certain deep sea plants and microorganisms can be cited as examples.
Certain other natural phenomena such as lightning and volcanic eruptions also emit light. Apart from the natural sources, light natural light sources be produced artificially too. The different light sources produced artificially can be put under three natural light sources categories- Incandescent Sources: When certain objects are heated to a high temperature, they begin to emit light.
List of light sources
Both infrared and visible light is produced in the process. Example- Candle, incandescent lamp. Light can be produced by accelerating charges in a luminescent material.
One common way of doing it is by passing current through the material. The sun is a star that is a huge ball of gas.
Sources of light
Explosions at the centre of the sun produce large amounts of energy. This energy is released as light and heat. Some of this light reaches Earth natural light sources gives us daylight. The light that comes from the sun is known as white light.
Other forms of natural light include the moon and the stars. The stars provide only small amounts of light at night as they are billions of kilometres away from Earth.
A full moon, however, can provide quite a lot of light. Natural light sources light from natural light sources moon is just light reflected from the sun. See image 2 Some animals can produce their own light. This is known as bioluminescence. A chemical reaction is produced in special light-producing cells.
Light Energy Sources: Lesson for Kids - Video & Lesson Transcript |
natural light sources This light is then used in a variety of ways but mainly to attract other creatures.
Glow-worms, fireflies, some fish and mushrooms are examples of living things that can create their own light. See image 3 Artificial light Humans have been able to create and control light for thousands of years.
The earliest form of lighting natural light sources with fire such as burning wood, candles, gas or oil. Candles were made out of beeswax or tallow animal fat.
Oil lamps used plant or animal oil and a wick to burn. Now the most convenient source of artificial light is the electric light. The history of electric lights The development of the electric light began in the early s.
Many of the first efforts were dangerous and not very reliable.