- #1
pebbles
- 95
- 0
Homework Statement
Which is more efficient, or has the highest lm/W, a lower- or higher-power light bulb? To find out, look at bulbs and record the power and lumens.
Homework Equations
Lumen, lm, = P or luminous flux.
The Attempt at a Solution
Power of the light bulbs would be the number of watts, correct?
I am confused as to how to calculate the lumens of a light bulb. My teacher said that we can just look at bulb boxes at a store, so I know no measuring of surfaces is involved.
Thanks in advance.