Ramsey's Basement Lighting:
The incandescent light bulb, incandescent lamp or incandescent light globe makes light by heating a metal filament wire to a high temperature until it glows.
The basement had lights of 150 watt spot lite type. This down facing beam will case the lite in a circle on the floor. The basement ceiling height is app. 8 ft. tall. the floor covering was Berber carpet and will not reflect the lite as a hard surface.
Reflector, Reflective coating inside the bulb directs light forward. Flood types spread light. Spot types concentrate the light. Reflector bulbs put approximately double the amount of light (foot-candles) on the front central area as General Service of same wattage.
Power = 150w
2,850 output
19.0 efficacy
A lumen is a unit of measurement that is used to express how much illumination a source of light provides.
The color of the lite is 3200 K
Green in color compare to a day lite bulb with is 5600 K Blue in color like daylight at noon.
The two basement near the crime scene will not light the wine cellar to the level need to see well. Then foundation and fire place at this location will block this lite as well. JB body was place in this dark areas and could be easy miss when view at the door way. The two bulb fluorescent in the cellar was not turn on because of the low level location of the lite switch.
“Footcandles” and “lux” are units that indicate the
density of light that falls on a surface. This is what light
meters measure. For example, average indoor lighting
ranges from 100 to 1,000 lux, and average outdoor
sunlight is about 50,000 lux.
Our test equipment here at JBI works with Footcandle. The meter is used to measure
“illuminance.” It is the only measuring instrument that you need for most applied lighting efficiency work.
The spot make a small pattern on the floor. This lite was installed in the long hall way away from the wine cellar door.
Team JBI