Bicycles can be categorized in many different ways: by function, by number of riders, by general construction, by gearing or by means of propulsion. The more common types include utility bicycles, mountain bicycles, racing bicycles, touring bicycles, hybrid bicycles, cruiser bicycles, and BMX bikes. Less common are tandems, low riders, tall bikes, fixed gear, folding models, amphibious bicycles, cargo bikes, recumbents and electric bicycles. Unicycles, tricycles and quadracycles are not strictly bicycles, as they have respectively one, three and four wheels, but are often referred to informally as bikes or cycles.
Light Reflectance Value (LRV) is the total quantity of visible and useable light reflected by a surface in all directions and at all wavelengths when illuminated by a light source. (ref.
This bulletin provides Light Reflectance Values (LRV) for the colors of DuPontâ¢ CorianÂ® solid surface. LRV. is useful when designing spaces for visual contrast or. light reflectivity. OVERVIEW. The LRV is a measurement of the overall amount of. light reflected from the surface. For aesthetics with. significant color variation, the value reported is an. average representing the overall shade. The LRV may. be used to determine the visual contrast between two. different materials where it is important that an object. be visibly distinct, such as letters on a sign, handrails. or stair treads. In addition, the light reflectance value of a material is also. used to calculate lighting requirements for a room. High. LRV material on ceilings, floors and walls help reduce. lighting requirements by reflecting existing light, either from. light fixtures or daylight.