News tagged with optical measurement

Your vital signs, on camera

You can check a person’s vital signs -- pulse, respiration and blood pressure -- manually or by attaching sensors to the body. But a student in the Harvard-MIT Health Sciences and Technology program is ...

Oct 04, 2010
4.8 / 5 (12) 3 | with audio podcast

Breakthrough in sensing at the nanoscale

Researchers have made a breakthrough discovery in identifying the world's most sensitive nanoparticle and measuring it from a distance using light. These super-bright, photostable and background-free nanocrystals ...

Sep 01, 2013
4.9 / 5 (7) 0 | with audio podcast

Studying waves over astronomical distances

Tiny pulses of light one billionth of a second apart, travelling further than from the Earth to Sun, were used in an exquisitely sensitive experiment at The University of Auckland to explore fundamental interactions between ...

Jul 08, 2013
5 / 5 (7) 2 | with audio podcast

Scientists shed light on glowing materials

Researchers at King's College London, in collaboration with European research institutes ICFO (Barcelona) and AMOLF (Amsterdam), have succeeded in mapping how light behaves in complex photonic materials inspired by nature, ...

Aug 20, 2012
5 / 5 (4) 0 | with audio podcast

The tick-tock of the optical clock

(PhysOrg.com) -- UK's National Physical Laboratory time scientists have made an accurate measurement of the highly forbidden octupole transition frequency in an ytterbium ion, which could be used as the basis ...

Mar 29, 2012
3.9 / 5 (11) 3 | with audio podcast

The making of dust

(PhysOrg.com) -- On the Earth, dust particles are everywhere - under beds, on bookshelves, even floating in the air. We take dust for granted. Dust is also common in space, and it is found for example in the ...

Jul 06, 2011
4.6 / 5 (5) 5 | with audio podcast