What is it?
When energy tries to go through something and is blocked, whatever does the blocking is said to absorb energy.
Give me an example!
Have you ever "burned" the bottom of your foot by stepping on a sidewalk or street on a hot sunny day? The heat that you feel is mostly energy from the sun that has been absorbed by the pavement. When heat from the sun tries to pass through the concrete or asphalt barrier, it is blocked and you can certainly tell that when you touch it with your bare skin!
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