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coal is made black so that it emits light
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∙ 12y ago
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What is black made out of?
A object appears black when it reflects or emits no visible light. True black is very uncommon because almost no substance can completely absorb light. http://en.wikipedia.org/wiki/Black
When you heat an object up what happens to the atomsmolecules that it is made of?
when you heat an object up what happene to the atomsmolecules that it is made of?
How does the fact that energy is neither created or destroyed affect an object that emits light?
Well, if the body emits its own light then it first has to make it. So when the light is made not all of the energy put in will become light therefore the energy created will become light, heat and sound (like a light bulb) and so the amount of energy that is wasted on heat and sound will affect the amount of light produced in the long run. Hope this helps
What contributions did Sadi Carnot and James Young and Joseph Black and Count Rumford made to the nature of heat?
Sadi Carnot discovered that the transformation of heat into mechanical energy could only occur when thermal energy flows from a hot object to a cool object. he also discovered that in this process some heat was always lost.
Which type of objects absorb heat most readily?
The objects that absorb heat most readily are those with more of the following qualities:the object is largethe object has a large surface areathe object is blackthe object has a matte finish (it is not shiny)the object is made from a conductor such as metalthe object is much colder than its surroundingsthe object has a high specific heat capacity
Can you give me one example of an object that can be made using the materials that are good conductors of heat?
a frying pan it is made of metal a great conduter of heat
What an object is made of and the color of light that strikes it determines the what?
The material an object is made of and the color of light it reflects can determine how hot an object gets when it is left out in the sun. Color and material both affect the amount of heat an object will absorb.
What are the 5 man made heat sources?
Machines, Radioactivity Electricity
How does color affect heat loss?
Rather than thinking of them as absorbers of heat, darker colors are better absorbers of light and thereby become better radiators of heat. Consider the following: The color of an object depends on the wavelengths of colors reflected from the object. A red apple is red because red wavelengths in white light are reflected and other wavelengths are absorbed. If a red apple were to be illuminated by light that had no red wavelengths, the apple would appear almost black. When a black object is illuminated by white light, all wavelengths are absorbed and none are reflected -- that's why the object appears black. When light is absorbed by a black object, the energy carried by the light doesn't just disappear. Rather, it raises the energy of the object doing the absorbing. The object, in turn, releases the absorbed energy by emitting longer wavelength, lower energy infrared (heat). This transformation of light into heat is the key to understanding the process because it accounts for the law of conservation of energy. Light just doesn't disappear when it strikes a black object, it's transformed into another kind of radiation that is either radiated from or retained within the black object. The darker the object, the better its emission of heat because, it is a better absorber of light. http://www.newton.dep.anl.gov/askasci/phy00/phy00156.htm
In order for heat to be conducted from one object to another what does the object need to made out of?
All objects conduct heat to some degree, even though some conduct it better than others. Objects are made out of matter, and that is the only requirement. If you want to know what an object would need to be made out of in order to conduct heat efficiently, that would be another question. Generally speaking, solids and liquids conduct heat better than gases so. Solids that contain trapped gas within them do not conduct heat as well as solids that don't.
What is something that creates and conducts heat?
a black shirt and a solar panel a black car
The amount of thermal energy stored in a object depends on?
The amount of heat energy in an object depends on three things : it's temperature, it's mass, and the material it's made from.
