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How is chess played

15.03.2002

German scientists have found that when playing chess, especially when analyzing the situation on the board, experienced masters and ordinary amateurs use different parts of the brain.

20 people were seated at the boards. All of them had ten years of playing experience, but some had the title of master, the rest did not have any sports titles. Computers played against people. During the game, the chess player's brain was scanned every five seconds with a tomograph, which determined the volume of blood flow in different parts of the brain. It is this indicator that indicates the activity of the nervous tissue in this place.

It turned out that the frontal and parietal lobes of the cerebral cortex work in the masters during the game - it is believed that the centers of long-term memory are located there. And for amateurs, it is mainly the central region of the temporal lobes of the brain that is involved, where short-term memory is concentrated.

The conclusion of the researchers: when playing, the master draws on his extensive knowledge, the experience of tens of thousands of games, and the amateur basically has time to react to the opponent's just made move.

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HLG-320H-C - 320W LED driver with current stabilization 24.01.2017

Mean Well has expanded its popular HLG family of outdoor LED power supplies with the new HLG-320 series with 320W output.

A feature of the new HLG-320 series is an increased output power with current stabilization, i.e., these are sources with a high-voltage output for powering serial LED strings with a current in the range from 700 to 3500 mA.

Power supplies have increased efficiency (at least 94%) and high reliability (manufacturer's warranty 7 years). The HLG-320 provides a wide range of lighting control options. The product line includes models with dimming (HLG-320CB) 3-in-1 (PWM, 0-10V, resistance), as well as models with DALI protocol control and models with programmable output parameters (Smart Timer Dimming) .

Power supplies of the HLG-320 series are designed for powerful industrial high-suspension luminaires, for lighting streets, highways, greenhouses and greenhouses.

Main technical parameters:

Output power 320W
Output current from range: 700, 1050, 1400, 1750, 2100, 2800, 3500 mA
Efficiency not less than 94%
KM not less than 0,95
Temperature range -40°С...+85°С
IP65 / 67
Dimensions (LxWxH) 252 x 90 x 43,8 mm
Manufacturer's warranty 7 years

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