That's why unprotected viewing of a large snowfield, which on a bright day can reflect light at more than 12,000 lumens, can result in being "snowblind." Visible light is light that can be perceived by the human eye. When you look at the visible light of the sun, it appears to be...
That's why unprotected viewing of a large snowfield, which on a bright day can reflect light at more than 12,000 lumens, can result in being "snowblind." Visible light is light that can be perceived by the human eye. When you look at the visible light of the sun, it appears to be...
We discuss this in further depth in our article about the difference between lumens and lux. If you suddenly change beam angles to something narrower (e.g. 60 degrees) you may inadvertently cause lighting "hotspots" where certain areas are very bright, and others are dim. 4) Determine light...
This is a great comparison tool, but does not tell the whole story about brightness. Beam intensity, distance and type all influence the effectiveness of a light in different applications. Light output can range from a modest 20 lumens (great for reading a book) to a terrain-scorching 3500 ...
Using LED panels, the light is evenly disturbed and spread without dim spots. So, the lighting looks pleasing, even within the panel. They offer a bright option to replace a 2×4 lighting fixture with two tubes. To replace a 2×4 lighting fixture, this fixture employs 40 Watts and provid...
Spotlights automatically turn on when motion is detected to help ensure there’s always light when it’s needed. A sudden burst of bright light may also deter any unwanted visitors who come by. Plus, you’ll get a notification if motion is detected, so you'll know if there’s activity ...
One way to compare lamps is by looking at how much energy they need (measured in watts) to produce the same amount of brightness (measured in lumens). Dividing these two numbers, we get the number of lumens each lamp can produce for a single watt of energy. Looking at the chart here,...
Light intensity refers tothe amount or quantity of light that a surface receives. It is usually measured in lumens or foot-candles. Thelight intensityis measured in terms of lumens per square foot (footcandles) or lumens per square meter (lumens). ...
and the one I keep coming back to is thePrinceton Tec Sync. It’s bright (150 lumens), water resistant, has flood lights and spotlights, and it has a red light, so you don’t wreck your night vision. The thing that keeps me coming back is the dial that controls it all. It’...
Advantages: This system is rated up to 18,800 lumens, and it doesn’t generate too much heat. There are a variety of customization options that help you choose the perfect system for your grow setup. Disadvantages: It doesn’t have the same strength as an HPS light bulb, and it doesn’...