由“Change Bulbs”部分第一段第二句“Forty percent of that powers old-fashioned incandescent light bulbs--a 19th-century technology that wastes most of the power it consumes on unwanted heat.”可知照明消耗了全世界电能总量的20%,而这些电能的40%又用在了老式的白炽灯照明上。这项19世纪的技术把其消...
There are hundreds of unique light bulbs with different power requirements. You can do the calculations for any type of light bulb -- from a high-voltage metal-halide fixture to a tiny LED flashlight bulb. As an example, assume you're trying to operate a 100-watt incandescent bulb for 4 ...
The wavelength of the emitted light depends on how much energy is released, which depends on the particular position of the electron. Consequently, different sorts of atoms will release different sorts of light photons. In other words, the color of the light is determined by what kind of atom...
With continuous use, you would typically need to replace your UV light bulb once a year. How Long Do UV Bulbs Last? UV light bulbs are very durable and can go for a long time before they lose a significant portion of their power. It’s important to understand that UV light bulbs often...
If you’re worried about how much water your family uses on a day-to-day basis in addition to the conservation of energy, consider replacing your existing showerhead with a low-flow model. These showerheads can take some getting used to. Once you adjust, though, you’ll be glad yo...
Certain drawbacks had kept companies from manufacturing them in standard, replacement-size light bulb form. But in the last decade or so, these LED replacement bulbs, the kind you just screw into a lamp like you do an incandescent bulb, have become much more common — which is to say a ...
In a single year, the use of CFLs over incandescent bulbs removes as much greenhouse gas pollution as taking 800,000 cars off the road [source: Illinois EPA]. Drawbacks of CFL Bulbs Compact fluorescent light bulbs do have a few issues that put people off. First, they deliver their best...
Equivalences between watts and lumens in LED light bulbs and conventional light bulbs. Switching from traditional light bulbsto LEDs offers us the same amount of light, with much fewer watts of power. This provides important energy savings in terms of lighting in the home. ...
The site also has a handy light bulb base chart. 2. Determine how much light you need Wattage is no longer the best way to determine which bulb will be a direct replacement for the bulb that just burned out. LED bulbs use a lot fewer watts than incandescents to produce the same level...
they flash at a steady rate. It should in fact be possible to find electronic flashers where you can even *adjust* the flashing rate. They shouldn't use much power at all, so you keep the power savings benefit. Downsides here though... there are a couple pin variations for flasher unit...