0
A LUMEN is a unit of measurement of light. It measures light much the same way. Remember, a foot-candle is how bright the light is one foot away from the source. A lumen is a way of measuring how much light gets to what you want to light! A LUMEN is equal to one foot-candle falling on one square foot of area.
So, if we take your candle and ruler, lets place a book at the opposite end from the candle. We'd have a bit of a light up if we put the book right next to the candle, you know. If that book happens to be one foot by one foot, it's one square foot. Ok, got the math done there. Now, all the light falling on that book, one foot away from your candle equals both…….1 foot candle AND one LUMEN
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoAn object emitting 1 lumen of luminous flux in all directions has a power of 0.23 watts, so a 1 watt light source emits 4.3 lumens.
It is important to note that lumens are a measure of VISIBLE light only. A 100 watt incandescent light bulb emits infrared light along with visible light, and it would therefore be incorrect to say it emits 43 lumens.
Also, a watt is a unit of power (in this case, a unit of power emitted from a light source). A lumen is a quantity of power passing through a solid angle.
Wiki User
∙ 14y ago1 watt can be exactly zero lumens, such as when it is used to turn a fan.
A watt is a unit of energy, lumens is a unit of light. Your question is like asking how much weight can 1 watt lift. It depends on whatever is using the (electrical energy) watt, and how efficient it is in doing whatever task it's designed to do (lift things, make light, heat things, etc.).
For your specific purpose, look at the lumens provided by the product you are looking at - more lumens per watt will be delivered by an LED light than an incandescent light.
Wiki User
∙ 11y agoThere is no conversion between lumen and watts.
Wiki User
∙ 10y agoPer watt, bulbs produce these amounts of light:
Incandescent: 10-12 lumens/watt
Halogen: 13-15 lumens/watt
CFL: 50 lumens/watt
Wiki User
∙ 12y agoit depend on the technology used of the led lamb
example i have two 100 lumens led lambs
one of them use 2.4 watt , and the other one use 4.8 watt
Wiki User
∙ 10y agoDepends on the LED.
Wiki User
∙ 13y ago47
Add your answer:
Earn +20 pts
How many lumens is 3w LED?
it depends, lumens measures light and watts measure power. check out this article; http://wiki.renderplus.com/?title=Lumens_vs_Watts
How many lumens make 1 ANSI Lumens?
One lumen makes up 1 ANSI lumen as they both measure the same output of light. ANSI lumens are used exclusively for measuring the output of projectors.
How many lumens do you need to replace a 400 watt halogen with a led flood light?
From halogen to LED you can divide by 4 to find the equivalent. Therefore an 80 watt LED would do the job.
How many lumens equal one volt?
No telling. Volts are a measure of electric potential. Lumens are a unit for light intensity. Different bulb types with the same input voltage will yield different lumens out.
Why cfl is widely used nowadays?
Compact fluorescent bulbs are widely used because they use one fifth of the electric power to provide the same amount of light as an incandescent bulb. Incandescent: 12 lumens per watt Halogen: 15 lumens per watt CFL: 50-60 lumens per watt LED: 100 lumens per watt High-pressure sodium: 200 lumens per watt
How many lumens in led strip lights?
About 80 lumens per watt of electric power is normal for LEDs.
How many lumens in 30 watt led?
1800lumens per watt
How many lumens is 3w LED?
it depends, lumens measures light and watts measure power. check out this article; http://wiki.renderplus.com/?title=Lumens_vs_Watts
How many lumens per watt?
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.
How many lumens make 1 ANSI Lumens?
One lumen makes up 1 ANSI lumen as they both measure the same output of light. ANSI lumens are used exclusively for measuring the output of projectors.
How many lumens do you need to replace a 400 watt halogen with a led flood light?
From halogen to LED you can divide by 4 to find the equivalent. Therefore an 80 watt LED would do the job.
What is the unit of measurement for a light from a LED?
usually lights are measured in lumens
Why are LED light bulbs good?
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.
How do the types of light bulbs compare?
The main types are: Incandescent 10 lumens per watt Halogen 13 lumens per watt Fluorescent 40-50 lumens per watt LED 40-60 lumens per watt Lumens measures the brightness, watts measures the electric power used.
Why cfl is widely used nowadays?
Compact fluorescent bulbs are widely used because they use one fifth of the electric power to provide the same amount of light as an incandescent bulb. Incandescent: 12 lumens per watt Halogen: 15 lumens per watt CFL: 50-60 lumens per watt LED: 100 lumens per watt High-pressure sodium: 200 lumens per watt
How many lumens in an F10T5 830 tube?
This is roughly 500 lumens
How many lumens does a 75w agro-light put out?
700 lumens
