250W halogen lamps for specialty uses (theatrical, aircraft, etc.) are available that output as much as 9000 lumens, but may be quite costly, require an unusual fixture, have a short lamp life, or all three. 250W halogen lamps available for consumers output as much as 4300 lumens for a double ended linear T3 (3mm diameter tube style) or 3600 for the common PAR38 outdoor flood or as little as 800 lumens for a premium 24v MR16 lamp or 550 lumens for a more ordinary MR16.
A previous version of this answer erroneous stated a 250W MR16 halogen lamp output 15,000 lumens possibly due to confusion of total light output in lumens with peak beam intensity in candlepower or lux.
Wikpedia says that halogen lamps produce about 19-20 lumens/watt. If you have a 500W lamp then you get 9500-10000 lumens.
Iodine is a halogen element. Fluorite is a mineral, not a halogen. Gypsum is a mineral, not a halogen. Galena is a mineral, not a halogen.
Iodine is the halogen present in Iodex.
True. Iodine is a halogen element located in group 17 of the periodic table.
A 150 watt floodlight typically produces around 1600-1800 lumens. The exact lumen output can vary depending on the efficiency and design of the specific light bulb.
Two 39W T5 fluorescent bulbs would produce more lumens than a single 250W halogen bulb. Each 39W T5 fluorescent bulb typically produces around 3300 lumens, totaling to 6600 lumens for two bulbs. On the other hand, a 250W halogen bulb typically produces around 4500 lumens.
Should be about 850 lumens. The same brightness is produced by a 15 watt CFL.
A 250W halogen bulb typically produces around 5000-6000 lux at a distance of 1 meter. Lux is a measure of illuminance, or the amount of light falling on a surface.
10-11 lumens per watt for incandescent bulbs 13-14 lumens per watt for halogen 50-60 lumens per watt for fluorescent
The lumen output of a GU10 bulb can vary depending on the specific bulb being used. On average, a GU10 bulb typically produces around 400-500 lumens. It's important to check the packaging or specifications of the specific GU10 bulb you are using to know its exact lumen output.
The energy consumption of a modern Cree XP-G or XM-L based flashlight with 170 lumen output can be as low as 1.4 watts with 120 and more lumen per watt. The light output will be approximately equal to a 20 W tungsten incandescent light bulb or a 10 W halogen light.
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There's a range of products in each category and incandescent lumen output degrades more quickly than halogens due to typically short lamp life. Try this for a start. "14-17.5 lumens per watt for standard "A19" 120 volt 60 to 100 watt incandescents, and typically 16 to 21 for most halogen lamps." Conceivably, you could get 210 lumen output in a 10w halogen and as much as 1050 lumens out of a 60w incandescent. MR16's list beam power, rather than lumens because they are so focussed and directional.
around 20
It depends on the specific lamp. The packaging the lamp comes in should tell you what the lumen output is. This in a common question as people want to compare LED replacements. You can use 600 lumen as a good guide for comparison for a 50 Watt halogen.
The lumen output for a 4W LED can vary depending on its efficiency and design, but a rough estimate is around 300-400 lumens. It's always best to check the specific product specifications for accurate lumen output.
Generally the lumen output of bulbs is proportional to the power used, if the bulbs are operated at their rated voltage.