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Both are energy in different forms. Light energy is seen by our eyes, light energy liberate electrons from photocell and laser light can melt or burn materials. Shorter wave length ( 400 to 800 nano meter) electromagnetic wave is light.

Heat energy is felt by our skin or touching. It vibrates the atoms in solids and liquids and it increases the random movement of atoms in gasses . It is also an electromagnetic wave of longer wave length ( 1000 to 2000 nanometers).

b. they impair judgment, which makes it more likely for people to engage in risky behavior.