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Luminous efficacy is a figure of merit for light sources. It is the ratio of luminous flux (in lumens) to power (usually measured in watts). As most commonly used, it is the ratio of luminous flux emitted from a light source to the electric power consumed by the source, and thus describes how well the source provides visible light from a given amount of electricity.This is also referred to as luminous efficacy of a source.
What else can I help you with?
How many lumens to equal a watt?
Incandescent bulbs: 10 lumens per watt Halogens: 13 lumens per watt CFLs: 50 lumens per watt A useful bulb to light a small room is 600 lumens, so that would need a 60-watt incandescent, or a 45-watt halogen, or a 12-watt CFL energy-saving bulb. The best CFL bulbs are the spiral ones.
How could engineers remodeling a hydroelectric plant increase power output from the plant without replacing its magnet?
you could increase the height of the dam so that water will flow faster. that force of the water would give it more power.
Wiring diagram daewoo exca solar 280 lc III excavator?
hello. i am repairing dawoo solar 280lc-III. i need diagram it. could you give me it. email:phongchuc@yahoo.com thanks
Mountain states electric service transformer question?
Could you please provide more context or details about your question regarding the Mountain States electric service transformer? This will help me give you a more accurate and relevant answer.
Give the formula of state ohms law?
There is no equation for Ohm's Law. Ohm's Law simply tells us that, for ohmic or linear materials, the ratio of voltage to current is a constant.The equation you are, presumably, looking for is derived from the definition of the ohm, not from Ohm's Law, and that is resistance is voltage divided by current.
What are the conditions that give rise to the brief definition of economics?
The conditions that give rise to the brief definition of economics is the law of supply and demand. Markets fluctuate according to how much is produced and how much is sold.
How many lumens are in a 150 watt incandescent light bulb?
A 150 watt halogen bulb will give off somewhere around 2000 lumens. These lights may give off up to about 2400 lumens.
What are the conditions that give rise to the definition of economics?
The conditions that give rise to the brief definition of economics is the law of supply and demand. Markets fluctuate according to how much is produced and how much is sold.
How many lumens does a 42 watt CFL give off?
A 42 watt CFL bulb typically produces around 2800 to 3100 lumens of light output.
How many lumens does an 18 watt CFL give off?
Currently maximum LED luminous efficiency is about 114 lumens/W, measured at 50mA. Average luminous efficiency is about 104 lumens/W. Ordinary LED light effect is about 60 lumens / W. 18W is about 130 lumens is about 1080 lumens.
How many lux in a 1000 watt bulb?
Incandescent bulbs give about 10 lumens of light per watt of electric power Halogens give about 13 lumens per watt CFLs give about 50 lumens per watt So it depends on the type of bulb.
What is the definition of title?
a heading that names a statute or legislative bill; may give a brief summary of the matters it deals withthe definition of title is a name to a piece or owned thing
How many lumens in a 125 watt CFL?
Depending on the brand, it will give about 18.000 Lumens and equals a 100W HPS lamp
Can you give a brief hospitality from ADNOC?
Can You Give a Brief Hospitality Expected
How many lumens does a 150 watt CFL give off?
A 150-watt light bulb uses energy at the rate of 150 watts, when it's turned on.
Is shoptic a word?
No, it is not a word. But if you give it a definition, you could make it a word...
Could you give me a definition of the word mishap?
-nounan unfortunate accident.
