Posted by **Maddison** on Saturday, April 24, 2010 at 8:17pm.

The question is: "A flashlight does not lose power as you walk away from it, but as you get farther and farther away, it appears to be less and less bright. Explain"

First of all I am BAD at explaining things, and when you don't know the answer it is even harder!!!

You dont have to answer the question for me, just explain why it gets less and less bright! Thanks sooo Much!

- Science Grade 8 -
**DrBob222**, Saturday, April 24, 2010 at 8:26pm
The intensity varies (changes) as a function of the inverse square. Here is an example.

If the light intensity is simple units is, say, x, then a double the distance the intensity will be 1/2^{2} = 1/4 the initial. Triple the distance will be 1/^{3} = 1/9 the original and quadruple the distance will be 1/42^{ = 1/16 the original.
}

- Science Grade 8 -
**DrBob222**, Saturday, April 24, 2010 at 8:28pm
My superscripts didn't do well. Let me try again.

1/2^{2} = 1/4

1/3^{2} = 1/9

1/4^{2} = 1/16

## Answer This Question

## Related Questions

- Art - So I'm trying to answer Leonardo da Vinci's statement on perspective. And ...
- trig, Phoenix College - Where did the number 0.5736 come from or originated from...
- Chemistry - why does inoinzation energy tend to decrease from top to bottom ...
- math - a perso increases the number of tosses of a fair coin the actual number ...
- chemistry - does chlorine or carbon have greater ionization energy? I would ...
- science - Two stones are launched from the top of a tall building. One stone is ...
- physics # 8 - 8. A large explosion is heard by two people. The first is located ...
- Math - Now can you please tell me if I am right for the following problems: The ...
- Science 3 - If a star were moved 10X farther away, its absolute magnitude would ...
- algebra - in a week Mike ran 8km farther than Bill, while Pete ran 1 km less ...

More Related Questions