News tagged with measurement technique

NASA's new way to track formaldehyde

NASA scientist Tom Hanisco is helping to fill a big gap in scientists' understanding of how much urban pollution -- and more precisely formaldehyde -- ultimately winds up in Earth's upper atmosphere where ...

Aug 09, 2012
5 / 5 (1) 0

Reanalyses find rising humidity in the Arctic

(Phys.org) -- Direct, reliable observations of atmospheric conditions stretch as far back as the mid seventeenth century, with otherwise consistent records being punctuated by periodic updates in methods, practitioners, and ...

Jul 06, 2012
4.3 / 5 (3) 0 | with audio podcast

Quantum copies do new tricks

One of the strange features of quantum information is that, unlike almost every other type of information, it cannot be perfectly copied. For example, it is impossible to take a single photon and make a number of photons ...

Mar 22, 2012
4.2 / 5 (13) 22 | with audio podcast

Ultra fast photodetectors out of carbon nanotubes

Single-walled carbon nanotubes are promising building blocks for future optoelectronic devices. But conventional electronic measurements were not able to resolve the ultra fast optoelectronic dynamics of the ...

Mar 07, 2011
5 / 5 (4) 0 | with audio podcast

MABEL flies her maiden voyage

Flying at the edge of space, a pilot wearing high-altitude flight gear maneuvered the ER-2 aircraft last month over the California desert. At 12 miles above the ground the temperature outside had plummeted ...

Jan 25, 2011
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