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What happens to an object that absorbs a lot of light?
Question Date: 2017-01-26
Answer 1:

Basically, light is kind of energy. Everything that absorbs the light will also absorb the energy. What happens to an object after absorbing the light will depend on what the object is. For example, the crop, trees absorb the light, and utilize them to produce the ingredients for their growth. That's also why we live by feeding on their fruits. Another example is the man-made solar cell, which can convert the absorbed energy into electricity (another kind of energy). This is one of the examples we use the solar energy. Most of the objects absorbing the light will heat up to a certain degree. That's why we feel warm under the sun in the cold winter.


Answer 2:

The object gets hot. Light is energy, so absorbing energy means getting warmer.

Answer 3:

Light travels with a momentum related to its speed (the speed of light) and its wavelength, since light travels in a wave. We look at wavelength when assigning an energy to a type of light, so short blue wavelengths will have a higher energy than longer red wavelengths.

When a light hits the body of an object, the energy the light carries transfers to the object. The electrons feel this energy, and in response get "excited" or get an increase of energy. We know how excited electrons get by how much energy the light carries. This excitement causes the electron to go to a higher energy level or a lower energy level.

When going up in energy levels, the electron absorbs the light and has a higher energy, and over time this energy goes back down due to radiation emitted. When going down in energy levels, a photon must be emitted with the energy making up for this change in energy. We see a general equation that a photon + electron at lower energy level = electron at a higher energy level . Looking at this, we get back to the lower energy electron by emitted energy, in the form of light.

Hope this answers your question!

Answer 4:

There are many types of energy, including heat, sound, and energy of motion (called kinetic energy). Energy can’t be created or destroyed, but it can be converted between the different types of energy. For example, rubbing your hands together quickly converts energy of motion into heat energy as your hands begin to feel warm.

Light energy is another type of energy. When light hits an object, it either bounces off, and stays as light energy, or it is absorbed by the object. When it is absorbed, it is converted into heat energy, and the object heats up. For example, black objects absorb a lot of light, so if you wear a black shirt on a sunny day, your shirt will absorb the sunlight and convert it into heat, making you feel hot!

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