How to measure light in foot-candles, lumens and lux and the basic references that will help you to do so.
A foot-candle equals one lumen per square foot. The brightness level roughly equals to the light that is one foot away from a common wax candle.If you need brighter LED strip, you will select those marked with higher value of lumens per unit length. Please be careful that different ...
For home theater use in a dark room, 13-18 lumens per square foot is the recommendation.Some people like a bit more punch, and 20-25 lumens is more than enough to deliver that. Looking at some common screen sizes, the square footage, and actual brightness needed for 18 lumens per squar...
Given how critical this spec is to choosing the right projector for the image size you want, it can be helpful to know a little more about it. This is especially true because there are several ways to measure lumens, so two projectors with the same lumen rating aren't necessarily equally ...
Lumens (lm) measure a bulb’s brightness. The higher the lumens, the brighter the lights will be. To adequately light your bathroom, you need at least 70lm – 80lm per square foot. Shop Light Bulbs Tip! Check out these12 Can't-Miss Bathroom Lighting Ideasfor more inspiration...
Summary: Calculating Total Lumens Needed for a Room Let’s recap how to gauge how much light you need for a space. Multiply your room square footage by the footcandle requirement. For example, a 100-square foot living room, which needs 20 foot candles, will need 2,000 lumen...
To establish how much light you’ll need in a room, it’s important to measure a bulb’s output of light. The best way to do this is with lumens – the total amount of visible light from a source. As a general rule, it takes around 20 lumens per square foot to create appropriate...
In today’s world, lighting efficiency is quite important.The more efficient a fixture is, the cheaper it is to maintain. And that’s why this method of calculation is imperative. When shopping for a light fixture, itsLumens per Wattrating is a critical factor in the decision-making process...
Afoot-candleis a measurement of light intensity. One foot-candle is defined as enough light to saturate a one-foot square with one lumen of light. Lumensmeasure the total quantity of visible light emitted by a source. However, this measure doesn’t consider the wavelengths of light and theref...
From contrast to color to input lag, I measure and compare home theater and portable projectors using instruments and my own two eyes.