Birds avoid radioactivity. Free Technical Library News

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Birds avoid radioactivity

27.10.2007

Employees of the Pierre and Marie Curie University (France) several years ago installed bird houses in the forest near Chernobyl.

A recent survey of their population has shown that pied flycatchers and great tits use only houses located at points of low radioactivity. In heavily infested areas, proposed housing was left empty. How birds recognize the level of radioactivity without Geiger counters remains a mystery.

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The advantage of liquid nanotransistors is that they remain 'on' or 'off' in the absence of drive current. In the future, based on them, it is possible to create powerful and efficient computing devices. Scientists at the IBM Almaden Research Lab in San Jose, Calif., have unveiled a new experimental way to store information in liquid nanotransistors, Technology Review reports.

The researchers demonstrated a material consisting of nanochannels filled with an electrolyte. If an electric current is applied to such a material, a layer of ions is formed in it, which changes the conductivity properties of the materials. This process is reversible. By applying electricity to a given material, it can be switched from a state of conduction to a state of non-conductivity and vice versa, thus writing a one or a zero.

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