Why did the author include this description?
In the darkness, a pinpoint of light becomes visible
Someone has turned on a flashlight. The pinpoint grows
to the sire of the bulb. Because this is slow motion, only
the bulb is bright. Nothing else lights up yet.
Now the light begins to spread outward from the bulb. It
fills a bigger and bigger space. As the light moves
forward, it strikes little fog droplets, the ground, a
sneaker, a tree, a cat. After each collision, some light
bounces off. It is redirected. Some of it reaches a person's
eyes. Only then can the light trigger the person's eyes and
brain. In slow, stretched-out speech, the person says,
"Loo0000-0000ook! -aaat"
- A Black Hole Is NOT a Hole,
Carolyn Cinami DeCristofano
to explain how a star produces light
to explain how light travels
to explain how cats see in the dark
to explain how fog forms