17+ 30 Lumens. Consult our chart for because lumens measure brightness and watts measure energy output, there is no simple method for. Find the lumens definition, the difference between lumens vs.
If you're used to thinking in.
If you're used to thinking in. .lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30. The 30 lumen 3v led replacement bulb is the perfect way to upgrade your old flashlight. A lot of people still use wattage to talk about the brightness of lamps, when in reality lumens are the measure of light output.