Your iPhone can produce a pretty decent amount of light(roughly 40-50 lumens), but it has a few drawbacks. For instance, it’s not as powerful as a real flashlight, and it drains the phone’s battery. So while the iPhone flashlight is excellent for lighting up nearby areas, it’s not...
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. This is a great comparison tool...
Does light travel as a wave, a ray or a stream of particles? Is it a single color or many colors mixed together? Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction? You might think ...
A basic hologram is easier to setup than you might think. HowStuffWorks It doesn't take very many tools to make a hologram. You can make one with: A laser: Red lasers, usually helium-neon (HeNe) lasers, are common in holography. Some home holography experiments rely on the diodes fro...
Does light travel as a wave, a ray or a stream of particles? Is it a single color or many colors mixed together? Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction? You might think ...
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,...
How to use a flashlight or other light to spot building contaminants on surfaces. The fact that mold is "hidden" or hard to spot on some surfaces in buildings does not mean you cannot find it. While this is perfectly obvious to some folks, too many of us haven't considered that is yo...
Many offices are lit with fluorescent lamps. Noel Hendrickson/Photographers Choice RF/Getty Images A neon light is the sort of light you see used in advertising signs. These signs are made of long, narrow glass tubes, and these tubes are often bent into all sorts of shapes. The tube of ...
8hours cool but if i have to get a new Batterie multiple times a week this is a bit of a minus Reply LJ says: August 20, 2012 at 7:18 pm How bright are the LEDs – if you need more light, do you just cram a longer length of the strip in, or is there a peak lumens/foot...
I carry ahigh-lumens pen flashlightto every event. A violent person who gets flashed in the eyes will be stunned momentarily. This is a pretty good video showing that a flashlight is capable of much more than you imagined. Do you need a generator for Coronavirus?