How harmful is television to our health? Detailed answer

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How harmful is television to our health? Detailed answer

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How harmful is television to our health?

Just do not harm the eyes - supposedly due to the fact that we are sitting too close to the screen.

Until the late 1960s, cathode ray tubes, albeit in extremely small doses, still emitted ultraviolet rays, and viewers were strongly advised not to sit closer than two meters from the kinescope.

Children were most at risk. Children's eyes are so well adapted to changes in distances that kids, unlike most adults, can sit quietly and watch programs, almost with their noses on the screen.

Nearly forty years ago, the Radiation Health and Safety Control Act required all kinescope manufacturers to use lead glass, making television sets completely safe.

The real harm to health from television lies in the sedentary lifestyle it encourages. Thus, over the past twenty years, the rate of obesity among children in the United Kingdom has tripled - and this is directly related to television. The average English child between the ages of three and nine spends fourteen hours a week in front of a TV screen - with just over an hour playing sports or playing outdoors.

Research published in 2004 in the journal Pediatrics suggests that children who spend two to three hours a day watching television have a 30% higher risk of developing attention deficit disorder (ADD).

In 2005, Nielsen, a media research firm, concluded that the average American home has a TV set on eight hours a day. This figure is 12,5% higher than ten years ago, and the highest since the company first began counting the number of viewers of certain television programs in the 1950s.

The American Academy of Pediatrics estimates that by the time Americans today turn seventy, they will have spent eight years of their lives in front of television screens.

Author: John Lloyd, John Mitchinson

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A new technology that can improve the learnability of artificial neural networks has been unveiled by an international team of researchers affiliated with the Ulsan National Institute of Science and Technology (UNIST) and Tsinghua University in China.

The proposed method exploits the "resistance drift" (rise in electrical resistance) of a phase change material in semiconductor memory during training. Information updates are recorded by increasing the electrical resistance in the memristor, which acts as a synapse and additionally takes into account the relationship between the changing template and the training data.

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