Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
#1 2011-03-30 01:41:28
- John E. Franklin
- Star Member
Offline
lumens/light
If a source of light is moved from 3 units
away from you to 9 units away from you,
without pollution in the space between
you and the light. Why does the light
getting to your eyes drop by a factor
of 3 to the 4th power??? I just dreamt this
up??? See if you get the same result???
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#2 2011-04-17 06:22:16
- John E. Franklin
- Star Member
Offline
Re: lumens/light
Hint: don't think of a flashlight or a big light.
Think of tiny objects like stars in the night sky...
Because you might get a different answer either way
since, well I won't give it away.
Imagine for a moment that even an earthworm may possess a love of self and a love of others.