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Artificial Light
We use artificial light in our houses. Lightbulbs help
us see and work. Many things we use every day have
lightbulbs.
We can read at night by the light of a table lamp.
Open the refrigerator, and you will
see lightbulbs. You can see the food
inside the refrigerator. The light of
cell phones and computer screens
also lets us see things.
Unit 12 | Artificial Light
