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Light is used for a number of purposes, the most basic being sight. When light hits something it deflects off of the object and when you look at the object the light that transfers into your eye creates the image before you. If there is little or no light, it becomes harder to see images and color.
Another use for light would be warmth. Sunlight, for example, warms the earth and keeps us from freezing. Without the sun we would be done. Excuse my pun. You notice how the temperature drops at night a few degrees? Well that's because we are blocked from the warm light that the sun emits.
Plants have other uses for light. They can literally take a sunbeam and turn it into food in a process called photosynthesis. In any case, Light has many uses.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoMany objects use light such as the light bulb,the sun, a camera and many others rainbows also use light
Wiki User
∙ 14y agoelectronics (camera, ds, psp, ps, tv etc...) lamp, light bulb, humans
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∙ 15y agolight bulbs, mirrors,
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∙ 15y agoIluminescence?
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∙ 14y agoAdd your answer:
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What are three deficiencies of the wave model of light related to lights interaction with matter?
The wave model of light can not explain why heated objects emit only certain frequencies of light at a given temperature, why some metals emit electrons when light of a certain frequency is shone upon them, and it cannot explain the emission of different wavelengths from the different colors when an object (iron for example) is heated
When they are lit some sparklers emit bright white sparkling light speculate on what the light source might be?
Aluminum or magnesium
What is the meaning of an 'internal photoemission'?
Some substances emit light on their own.The emission of light by a substance by itself is called photoemission.
What are some objects that produce light and heat?
Stars.
How are mirror images formed?
What is an image?We see objects, because they either emit or reflect light. We visually identify objects by the pattern of light that they emit or reflect. We gather some portion of that light on a detector (our eyes). In interpreting the pattern, we implicitly assume that the light traveled in a straight line from the object to the detector.A real image of an object produces the same pattern of light as the object does somewhere in space. Some portion of the light from the real image reaches our detector along a straight-line path. The detector cannot distinguish between light coming from the object and light coming from the image. We interpret the same patterns in the same way. A virtual image is the apparent position from which a pattern of light reaches our detector, if we make the assumption that it has traveled from its source to the detector along a straight-line path. Virtual images are formed when light from an object or from an image is reflected or bend on the way to the detector DR Amir
How does a radio telescope see objects which are too dim for an ordinary telescope?
Radio Telescope observe light of a different wavelength then optical light. Radio waves have a longer wavelength then visible light. Some interstellar objects barley emit any light in the visible spectrum but emit a significant amount of radiation in the radio spectrum. Radio telescopes enable us to view objects which emit in the radio spectrum.
Name some stars that don't emit light?
If the stars didn't emit light, then we wouldn't be able to detect them. So they wouldn't have names.
What are example of luminous objects?
Luminous objects are those that emit their own light. Examples of such objects include the following; the sun, lightened candle, stars, torch bulb and Hydrogen atoms.A luminous object is an object that gives off light. Here are some examples; A light bulb, torch, match, sun, lit candle.
What type of star does not emit light?
All stars emit light. However, people are not able to see some stars because of the different type of light the wavelengths produce. +++ Also of course, the received intensity depends on distance. A black hole would be incandescent too, but by its definition the light it creates cannot escape the objects immense gravitation.
Are satellites luminous or non-luminous?
Non-luminous. Objects which produce light of their own or give out or emit their own light are called luminous objects. Objects which do not produce light of their own, on the other hand, are called non-luminous objects. Luminous objects are objects like stars, sun and other celestial bodies which give out their own light. Objects surrounding us are not such light emitting objects. Therefore, we are surrounded by non-luminous objects.
Is light emitting diodes emit visible light when forward biased?
It depends on the particular LED. Some of them emit infrared light. But, yes, emission occurs when forward-biased.
What do stars emit besides heat and light?
They emit: gamma rays, radio waves, and x-rays. Some stars emit T.V. rays
What are three deficiencies of the wave model of light related to lights interaction with matter?
The wave model of light can not explain why heated objects emit only certain frequencies of light at a given temperature, why some metals emit electrons when light of a certain frequency is shone upon them, and it cannot explain the emission of different wavelengths from the different colors when an object (iron for example) is heated
Does Jupiter reflect or emit light?
ANSWER: It reflects light. The sun is the only body in the solar system to emit light.
What is a star that dose not emit light?
A black hole. Nothing gets out of it; but because of interactions with the matter around it, black holes can still be the brightest objects in the Universe! Do some reading on quasars, for more details.
Why do astornomers use frequencies other than the visible ones when they are investigating the universe?
To get additional information. Some objects emit mainly radio waves, some emit mainly X-rays, etc.
What are luminous and non luminous materials?
Luminous means "giving off light", or glows in the dark (since luminosity is detected by the eyes, it usually refers to the visible part of the electromagnetic spectrum). Many materials emit a wide range of radiation other than visible light, which is why some radioactive materials were used as glow in the dark paints, and why the Curies focused on a particular radioactive isotope (because it glowed in the dark). Some materials can even store energy from visible light and emit it later, which is why some of my luminous objects have to be "charged" by a light bulb or the sun. Some chemical combinations can emit light for a while, such as the stuff in lightning bugs, which we can replicate in production lines to make glow sticks. Non luminous materials do not emit light that we can see. Most elements that are not radioactive fall into this category.
