SynopsisA light commercial vehicle is the official term used within the European Union, Australia, New Zealand for a commercial carrier vehicle with a gross vehicle weight of no more than 3.5 metric tons. Qualifying light commercial vehicles include pickup trucks, van.....
SynopsisAn electric aircraft is an aircraft powered by electric motors. Electricity may be supplied by a variety of methods including batteries, ground power cables, solar cells, ultracapacitors, fuel cells and power beaming. They have since developed into small batte.....
SynopsisLED is the acronym of Light Emitting Diode. It is a kind of semiconductor device that is commonly used in indicator light and display board. LED is capable of transforming electric energy into light energy directly in high efficiency and its life-span can reac.....
SynopsisA light metal is any metal of relatively low density. Magnesium, aluminium and titanium are light metals of significant commercial importance. Their densities of 1.7, 2.7 and 4.5 g/cm3 range from 19 to 56% of the densities of the older structural metals, iron .....
SynopsisA projector is an optical device that projects an image onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by usi.....
SynopsisLight rail is a form of urban rail transport using rolling stock similar to a tramway, but operating at a higher capacity, and often on an exclusive right-of-way. A few light rail networks tend to have characteristics closer to rapid transit or even commuter r.....
SynopsisLight therapy consists of exposure to daylight or to specific wavelengths of light using polychromatic polarised light, lasers, light-emitting diodes, fluorescent lamps, dichroic lamps or very bright, full-spectrum light. The light is administered for a prescr.....
SynopsisA light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable current is applied to the leads, electrons are able to recombine with electron holes within the device, releasing.....
SynopsisLazy eye refers to the drifting or misalignment of an eye. This is usually the manifestation of amblyopia, where one eye is experiencing significant vision loss, and sometimes also strabismus (or “crossed eyes”), a general misalignment problem. The globa.....
SynopsisLDL stands for low-density lipoprotein, a type of cholesterol found in the body. LDL is often referred to as bad cholesterol. This is because too much LDL results in a build-up of cholesterol in arteries, which can lead to heart attacks and strokes. High level.....
