To convert lumens to watts, you need to consider the efficacy of the light source, as different types of bulbs produce different amounts of light per watt. For example, an LED bulb typically produces about 80-100 lumens per watt, while an incandescent bulb produces around 10-17 lumens per watt. Therefore, 1.2 lumens would be approximately 0.012 to 0.12 watts for an LED, and around 0.07 to 0.12 watts for an incandescent bulb. The exact wattage can vary based on the type of light source.
Depends on the bulbs efficiency. The ones I've gotten in the past few years are between 700-800 lumens. Check the packaging, it should state.
Bulb brightness is measured in lumens which express the amount of light produced, while the electric power used is measured in watts. The typical efficiency of some different types of bulb is: Incandescent 12 lumens per watt Halogen 17 lumens per watt CFL (compact fluorescent) 50-60 lumens/watt LED (light-emitting diodes) 90-100 lumens/watt.
100 W tungsten incandescent (220 V): 1380 lm
To determine the answer you need to know the efficacy (luminous flux) of the LED light which may range from 30-90. You can use 60 for an average. Multiply the watts from an incandescent bulb - what you are familiar with - say 40 watts x the LED luminous flux 60 = comparable lumens of about 2400 to see the same brightness.
161 lumens I believe the above answer to be inaccurate. It depends on the light source. For example: For an incandescent light bulb 1 watt it is approx. 18 Lumens. However most LED's use only about 10% the wattage to produce the same amount of light. So for LED's .1 watt produces 18 Lumens.
LEDs use the smallest amount of electrical power to produce a given amount of light. Approximate data: Incandescent 12 lumens per watt Halogen: 15-17 lumens per watt CFL: 50 lumens per watt LED: 80 lumens per watt Sodium lights as used in street lighting produce 100-200 lumens per watt.
To convert lumens to watts, you need to consider the efficacy of the light source, as different types of bulbs produce different amounts of light per watt. For example, an LED bulb typically produces about 80-100 lumens per watt, while an incandescent bulb produces around 10-17 lumens per watt. Therefore, 1.2 lumens would be approximately 0.012 to 0.12 watts for an LED, and around 0.07 to 0.12 watts for an incandescent bulb. The exact wattage can vary based on the type of light source.
Depends on the bulbs efficiency. The ones I've gotten in the past few years are between 700-800 lumens. Check the packaging, it should state.
Bulb brightness is measured in lumens which express the amount of light produced, while the electric power used is measured in watts. The typical efficiency of some different types of bulb is: Incandescent 12 lumens per watt Halogen 17 lumens per watt CFL (compact fluorescent) 50-60 lumens/watt LED (light-emitting diodes) 90-100 lumens/watt.
100 W tungsten incandescent (220 V): 1380 lm
The bulb will have an efficacy of 17-20Lm per watt, so in total 500W = 8,500-10000 lumens. However, the bulbs light output is non directional, so a lot of the spilled light is in directions that you don't want it to go, so 50-70% of the figure can be used when specing up an LED variant.
Old style incandescent light bulbs have an efficiency of about 10-17 lumens per watt, meaning they convert only 10-17% of the energy they consume into visible light, with the rest being lost as heat. This makes them much less efficient compared to newer LED light bulbs, which typically have efficiencies of 80-100 lumens per watt.
To determine the answer you need to know the efficacy (luminous flux) of the LED light which may range from 30-90. You can use 60 for an average. Multiply the watts from an incandescent bulb - what you are familiar with - say 40 watts x the LED luminous flux 60 = comparable lumens of about 2400 to see the same brightness.
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Rowley Watt was born on 1898-07-17.
There are two main types of commercially available energy-efficient light bulbs. These are LEDs and CFLs. Both are better than traditional incandescent light bulbs when it comes to energy efficiencyThe efficiency of light bulbs is calculated by comparing the amount of light produced to the amount of energy consumed:LED bulbs produce 90 to 112 lumens per watt.Compact fluorescent lamps or CFLs produce 40 to 70 lumens per watt.Traditional incandescent bulb fixtures only produce 10 to 17 lumens per watt.There are other considerations: Compact fluorescent light bulbs have a life span of eight to 10 years and cost about $4 per bulb.LED bulbs last up to 40 or 50 years but can cost over $306 per bulb.CFLs contain mercury which may require special handling for disposal while LEDs do not.