In physics, these are called Light sources.

I’d basically say that all light, other than from the sun, is artificial. “Natural” is sort of a vague term, which is what you’re comparing against of course.

Natural sources of light include the sun, stars, fire, and electricity in storms. This is called bioluminescence. 12.5 Artificial Light Sources Market Risks/Restraints 12.6 Porter's Five Forces Analysis 13 Key Finding in The Global Artificial Light Sources Study 14 Appendix 14.1 Research Methodology 14.1.1 Methodology/Research Approach 14.1.2 Data Source 14.2 Author Details 14.3 Disclaimer Light is a form of energy and like all energies, it is produced from a source.

Light bulbs, LED’s, fluorescents, fireworks, road flares, nuclear explosions, and fire. In developing artificial lights, the technological effort is aimed at producing light that will resemble natural daylight (sunlight).

Artificial light is measured in two ways – the specific frequency range of the source and the strength of illumination, measured in lumens. A detector (the eye) measures identical photons from natural sunlight and laser light.

Sunlight is one of the most obvious and prominent sources of natural light for humans. These types of light are naturally occurring and do not necessarily need humans to create light. The main source of light to the world is the sun. Natural sources of light include sunlight, the stars, volcanoes, meteorological lightning and biochemical sources. There are even some animals and plants that can create their own light, such as fireflies, jellyfish, and mushrooms. This is a great set of bright and colorful worksheets for a Grade 2-5 science lesson.This set includes 3 worksheets:* Sources of Light: Artificial and Natural (a worksheet where students cut and paste the different sources of light into the two categories)* Sources of Light: A coloring sheet where s The development of artificial light based on electric energy sources began at the end of the 19th and early 20th centuries. Sources of light are all around us, very rarely you will find yourself in complete darkness with no source of light. Types of light sources: There are countless sources of light but they can all be categorized under either of the two following categories-Natural sources; Artificial sources; Natural Light Sources: Artificial light is created by humans.