The largest giant squid recorded by scientists measured 43 feet (12 meters) long, according to Smithsonian's National Museum of Natural History. Faked photo of a giant squid supposedly found In California. An image of a monster 160-foot-long (49-meter-long) giant squid made the social media rounds yesterday, but fear notâit's a hoax.
luminescence - light not due to incandescence; occurs at low temperatures. light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; the light was filtered through a soft glass window.
Illuminance = Light Falling on a Surface. The amount of light falling on a surface is illuminance, and is measured in lux (metric unit = lumen/m 2) or foot-candles (English unit = lumen/ft 2).1 footcandle equals 10.8 lux.he amount of light that travels in certain directions from the source is called the  luminous intensity  and is measured in candelas. A candle emits about one candela in all directions (this candle would emit a total of 12.6 lumens â learn more about lumens, solid angles, and candelas on Wikipedia).