(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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.

2. Relevant equations

Lumen, lm, = P or luminous flux.

3. 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.

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# Recording power and lumens for light bulbs.

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