News tagged with temperature

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How to make a "perfect" solar absorber

The key to creating a material that would be ideal for converting solar energy to heat is tuning the material's spectrum of absorption just right: It should absorb virtually all wavelengths of light that ...

Sep 29, 2014
4.8 / 5 (35) 3

Is the sun at solar minimum?

We generally think of the Sun as a constant in our lives. It rises and sets regularly, and seems to be an unchanging sphere of brilliant light. In fact the Sun has a turbulent surface with prominences that ...

Oct 03, 2014
4.7 / 5 (22) 4

Cold atom laboratory chills atoms to new lows

(Phys.org) —NASA's Cold Atom Laboratory (CAL) mission has succeeded in producing a state of matter known as a Bose-Einstein condensate, a key breakthrough for the instrument leading up to its debut on the ...

Sep 29, 2014
4.7 / 5 (17) 0

The coolest stars

One way that stars are categorized is by temperature. Since the temperature of a star can determine its visual color, this category scheme is known as spectral type. The main categories of spectral type are ...

Sep 29, 2014
4.5 / 5 (15) 1

Cold Atom Laboratory creates atomic dance

Like dancers in a chorus line, atoms' movements become synchronized when lowered to extremely cold temperatures. To study this bizarre phenomenon, called a Bose-Einstein condensate, researchers need to cool ...

Oct 20, 2014
4.9 / 5 (10) 1

Climate change affecting species

The Global Change and Sustainability Research Institute (GCSRI) and the Wits Rural Facility (WRF) hosted a top climate change scientist, Professor Camille Parmesan, who delivered a talk to staff, students ...

Sep 30, 2014
3.5 / 5 (11) 26