What is the main idea of this chapter?

Were there any ideas or words that were unclear in this chapter?

The author wrote "These tiny colors are designed to make the images and movements that our brains understand."

What are "images" mean in this quote?

Sabiha wrote "When you turn your TV on, your TV translates the electronic signal so it can be shown on your TV’s display and the audio is made by your TV’s speakers."

What does "translate" mean in this quote?

What does the picture of the dog show?

What does “communicate” mean in this quote?

“Your remote control uses infrared waves to communicate with your TV.”

How much faster are ultra–violet waves than infrared waves?

Sabiha wrote "Scientists found that heat sources send out infrared waves, too."

What does "heat sources" mean in this quote?

Are there any words or ideas that are still unclear? List them here.