American Institute of Physics

Using fluctuating wind power

Incorporating wind power into existing power grids is challenging because fluctuating wind speed and direction means turbines generate power inconsistently. Coupled with customers' varying power demand, many ...

dateMar 25, 2013 in Energy & Green Tech
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Magnetic shielding of ion beam thruster walls

Electric rocket engines known as Hall thrusters, which use a super high-velocity stream of ions to propel a spacecraft in space, have been used successfully onboard many missions for half a century. Erosion of the discharge ...

dateFeb 13, 2013 in General Physics
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The nanomechanical signature of breast cancer

The texture of breast cancer tissue differs from that of healthy tissue. Using a cutting-edge tissue diagnostic device, a group of researchers in Basel, Switzerland, has determined one key difference: cancerous tissue is ...

dateFeb 01, 2013 in Bio & Medicine
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Sorting stem cells

When an embryonic stem cell is in the first stage of its development it has the potential to grow into any type of cell in the body, a state scientists call undifferentiated.

dateJan 03, 2013 in Cell & Microbiology
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