A nanocandela (ncd) is a unit of luminous intensity in the International System of Units (SI), equivalent to one billionth of a candela (cd). The candela measures the light emitted by a source in a ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. This week, Sam Kean takes a look at some ridiculously precise ...

Taking the first steps of what would be a major historical advance in the science of measurement, the National Institute of Standards and Technology (NIST) is participating in a worldwide effort to ...

- the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2 ...

185 lumen-per-Watt, single-die design features Cree's new primary optics. DURHAM, N.C.--(BUSINESS WIRE)--Cree, Inc. (Nasdaq: CREE) announces the new XLamp® XP-L High Intensity LED, the first ...