News tagged with kelvin

New material for warm-white LEDs invented

Light emitting diodes, more commonly called LEDs, are known for their energy efficiency and durability, but the bluish, cold light of current white LEDs has precluded their widespread use for indoor lighting.

Jan 18, 2013
4.6 / 5 (14) 0 | with audio podcast

Floundering El Ninos Make for Fickle Forecasts

(PhysOrg.com) -- Since May 2009, the tropical Pacific Ocean has switched from a cool pattern of ocean circulation known as La Niña to her warmer sibling, El Niño. This cyclical warming of the ocean waters ...

Sep 29, 2009
4.3 / 5 (7) 0

A New Glance on Microscopic Images

A doctoral student at the research center Forschungszentrum Dresden-Rossendorf (Germany) suggests interpreting the images generated by Kelvin probe force microscopy in a new way. She recently published her ...

Sep 16, 2009
4.5 / 5 (2) 0

Coolest spacecraft ever in orbit around L2

(PhysOrg.com) -- Last night, the detectors of Planck's High Frequency Instrument reached their amazingly low operational temperature of -273°C, making them the coldest known objects in space. The spacecraft ...

Jul 03, 2009
4.7 / 5 (11) 4

The Fickle El Nino of 2014

Prospects have been fading for an El Niño event in 2014, but now there's a glimmer of hope for a very modest comeback. Scientists warn that unless these developing weak-to-modest El Niño conditions strengthen, ...

Sep 24, 2014
5 / 5 (8) 3

Skin with high rust protection factor

In industrialized countries, corrosion guzzles up to 4 percent of economic performance annually. Substances that protect metals effectively from its ravages are often damaging to the environment or have other ...

Jun 04, 2014
4 / 5 (1) 1