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.
There are two cases: Illuminance (usually 'E' in formulas) is the total amount of visible light illuminating (incident upon) a point on a surface from all directions above the surface. This surface can be a physical surface or an imaginary plane. Therefore illuminance is equivalent to irradiance weighted with the response curve of the human eye. Standard unit for illuminance is Lux (lx) which is lumens per square meter (lm/m 2).