How to measure light in foot-candles, lumens and lux and the basic references that will help you to do so.
How does it feel in your hand? Is a tool required to change batteries? Light Output Measured in lumens. This is a measure of the intensity of the light coming out of the flashlight on the highest brightness setting powered by new batteries. It may also be shown for multiple light settings...
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 ...
ShineLong’s ring camera floodlight is a powerful and effective security solution. It is designed to provide up to 2000 lumens of light, which is enough to illuminate a large area. The camera has a wide-angle lens that can capture an area up to 30 feet away. It is also equipped with m...
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...
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...
A kilopascal (kPa) is metric unit used to calculate the force that an object exerts on another stationary object for every square meter of contact. This unit is commonly used in measuring atmospheric pressure and water pressure in metric countries.
the manufacturer is saying that the perceived brightness is equal to what you'd get witha lamp-based projector with that ANSI lumen spec, even though an ANSI measurement of the LED projector results in a lower number. You can read more about LED lumens in our article, "Are LED Lumens a...
Wattage is a measure of how much electricity (or energy) a light bulb consumes to achieve its lumen output. Each type of light source — LED, fluorescent, halogen or incandescent bulbs — has a differentlumen-to-watt ratio. If a 100-watt incandescent light produces 1,500 lume...
It’s important to note that watts and lumens are two distinct quantities. A Watt is a unit used to measure the energy consumption of a lighting fixture, while lumens is a measure of the intensity of light produced by a light-emitting fixture. ...