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Blu-ray disc cost

20.02.2006

Panasonic has announced the estimated cost of Blu ray discs (BD), which will soon begin selling in the US.

Americans will be offered four types of new media, each of which will differ not only in features, but also in price: recordable 25-gigabyte single-layer BD - $17 (US); recordable 99 GB dual-layer BD $50; rewritable 42 GB BD $99; rewritable 25 gigabyte BD $24

A regular Blu-ray "blank" is recorded at 24 speed and can later be played on consumer video equipment, personal computers and other devices that can read the new format.

Paying $60 for new media from Panasonic isn't cheap, but you get 25 to 50 GB of free space and increased scratch protection (thanks to inorganic lightfast materials and sensitive film).

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mechanical fly 03.11.2006

Experts from the Laboratory of Biorobotics in Marseille (France) have created a miniature aircraft "Oscar", which simulates the behavior of a fly in flight.

In the head of a common housefly, a brain is hidden, consisting of about a million neurons that receive signals from 48 cells in the retina of the eyes. Based on information from the eyes, 18 pairs of flight muscles receive orders from the brain to change the direction and speed of flight.

Studies have shown that in flight, the fly's retina actively vibrates, so that the image alternately hits different light-sensitive elements. This makes it possible to keep the flight target in the center of the field of view 40 times more accurately than with a fixed retina. Oscar has replaced this system with one electronic eye and a 0,2 gram chip.

The photosensitive matrix vibrates at the same frequency as a fly. The device can follow a given target and fly towards it, despite the movement of the target and the wind or lateral shocks that knock it off course.

Scientists intend to install a similar system on helicopters and aircraft in order to facilitate their control.

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