Niagara County is in the extreme western part of New York State, just north of Buffalo and adjacent to Lake Ontario on its northern border and the Niagara River and Canada on its western border.
A foot candle is a measure of luminance or light intensity. It is an imperial measurement unit, unlike the more common lux, which is based on the International System of Units (SI) or metric system. Foot candles are mainly used in film and photography, but can also be used in gardening. One foot candle is the amount of illumination received on an area of a surface that is a sphere with a one foot radius, cast by a light source with an intensity of one candela.
Illuminance is measured in foot candles (ftcd, fc, fcd) or lux (in the metric SI system). A foot candle is actually one lumen of light density per square foot; one lux is one lumen per square meter. â¢ 1 lux = 1 lumen / sq meter = 0.0001 phot = 0.0929 foot candle (ftcd, fcd) â¢ 1 phot = 1 lumen / sq centimeter = 10000 lumens / sq meter = 10000 lux â¢ 1 foot candle (ftcd, fcd) = 1 lumen / sq ft = 10.752 lux Common Light Levels Outdoors from Natural Sources Common light levels outdoor at day and night can be found in the table below: Illumination Common Light Levels Outdoors from Manufactured Sources The nomenclature for most of the types of areas listed in the table below can be found in the City of