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What is a lumen?
a measurement of the amount of visible light.AnswerA lumen is the photometric SI unit for luminous flux -i.e. the rate at which an object emits visible light. By 'visible light', we mean electromagnetic energy perceived by the human eye, and the lumen is based on the frequency of green light, to which the human eye is most sensitive.
When a electron returns to its stable or ground state is emits?
When an electron returns to its ground state it emits energy in the form of light.
How meany pounds of force to get light speed?
It takes an infinite amount of energy to accelerate an object with mass to the speed of light. It is therefore impossible.
Sketch an atom emitting light. Does the electron end up in a higher or lower orbit. Repeat for an atom absorbing light?
When an atom emits light an electron has fallen from a higher orbit to a lower orbit. The amount of energy the emitted photon has will equal the energy difference between the initial and final orbits.
Does the sun or earth emit light with higher energy?
Only the sun emits radiation in the wavelengths of visible light, which is considerably higher energy than infrared emitted by Earth.
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
If an object emits or reflects light?
It can be seen by the eye.
When light hits an object most of the light is absorbed by what?
simple when a light strikes a surface the amount of energy that refactes that surface is generally aborbed by the object(material) which it aabsorbs the energy from light.
Why is a light bulb a example of light energy?
Because it emits light.
What object is made black so that it emits heat?
coal is made black so that it emits light
An hot object emits less radiation than a cool object emits?
Generally, yes. For example, a hot coil may emit infrared or even red light, and hot iron glows. When cool, however, they do not emit light. The reason is that electrons are given more energy from the heat, so they raise in their location from the atom, and when they return to a stable location they give off light.
What is a lumen?
a measurement of the amount of visible light.AnswerA lumen is the photometric SI unit for luminous flux -i.e. the rate at which an object emits visible light. By 'visible light', we mean electromagnetic energy perceived by the human eye, and the lumen is based on the frequency of green light, to which the human eye is most sensitive.
Whats The amount of light energy released from an object each second?
bapple is the key
What is the relationship between wavelengths and temperature?
There is a relationship between the temperature of an object and the wavelength at which the object produces the most light. When an object is hot, it emits more light at short wavelengths while an object emits more light at long wavelengths when it is cold. The amount of radiation emitted by an object at each wavelength depends on its temperature.
How does heat travel as radiant energy?
An object at any temperature emits electromagnetic radiation, mainly from its surface. This can be infrared, or - at higher temperatures - visible light. This electromagnetic radiation can travel through empty space, or through air. If it strikes another object, the energy (or part of the energy) will be transfered to this other object.
Light is a wave that carries energy a light source emits a countless number of?
photons
Why is the statement the color of an object depends on the wavelengths of light it absords inaccurate?
...because the colour of an object depends on the wavelength of light it reflects, or the wavelength of light it emits.
