News tagged with oscillator

The Polaris Cluster

(PhysOrg.com) -- A Cepheid star is one whose mass and age results in physical conditions that generate periodic oscillations in its photosphere. A Cepheid thus varies regularly in brightness, with a period ...

dateMay 28, 2010 in Astronomy
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The shell makes the difference

(PhysOrg.com) -- Contrast echography is a commonly used medical imaging technique that is used to show up abnormal blood circulation in organs and tumours. The method makes use of ultrasound and a contrast ...

dateApr 12, 2010 in Biochemistry
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Sensitive nano oscillator can detect pathogens

(PhysOrg.com) -- By watching how energy moves across a tiny device akin to a springing diving board, Cornell researchers are a step closer to creating extraordinarily tiny sensors that can instantly recognize ...

dateMar 11, 2010 in Nanophysics
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Listening to other stars

When scientists realised that observing and analysing oscillations in the Sun could provide information about its interior, it was only a matter of time before Helioseismology was put to work on other stars.

dateFeb 15, 2010 in Astronomy
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