Is 3D tv harmful for health ?

Is 3D tv harmful for health ?

Scientists  and researchers say Avoid 3D TV as it can disorient the brain, causing eye strain, headaches, nausea and sickness, scientists warn.

3D TV can be harmful

When buying a 3 DTV , Viewers will have a choice between two types of 3D TVs - active and passive - which show the 3D images in different ways.
An active TV normally will cost less that a passive 3d tv, but will require special 'shutter' glasses. The basic idea is that the TV displays the  3D programme  or movie in a series of rapidly alternating frames - left eye, right eye, left eye, right eye - changing at such a speed that the viewer cannot even detect it is happening. The shutter glasses, which cost 20 to 40 USD a pair and are powered by a small battery, block out one eye or the other on alternate frames at the same high speed, synchronizing with the image being displayed on TV via a wireless connection to the set. The brain is thus fooled into creating a 3D image in the mind's eye.

3D Tv warnings for health

The  3d tv passive technology relies on a special polarising filter on the TV set to split the image into its left eye - right eye components. The split picture is then watched using a simple pair of polarising glasses - similar to the ones handed out in modern 3D cinemas - to create the 3D image.

The closer the viewer is to the screen, the worse it feels, making 3D TVs more problematic than cinema screens. Researchers at Eindhoven University in the Netherlands asked 39 people who could see 3D to read some text on a screen 10 feet away. Seven of the group suffered symptoms that can lead to nausea, including double vision and eye.

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Are mobile phones bad for babies ?

Are mobile phones bad for babies ?

Scientists in America  reported that foetuses regularly exposed to mobile phones in the womb had a 30 per cent greater chance of behavioural difficulties at the age of seven. The findings, published in the Journal of Epidemiology and Community Health, were based on a study of 28,000 seven-year-olds and their mothers, who were part of the Danish National Birth Cohort study.

The study enrolled 100,000 pregnant women between 1996 and 2002 and monitored their behaviour and their children's health over eight years.

The  report sugests  that  pregnant  women who regularly use mobile phones may be more likely to have children with behavioural problems, particularly if their children start using mobile phones in their first seven years. The researchers from the University of Southern California said the results showed an obvious association between mobile phone exposure and abnormal behaviour in children.

The Australian Centre for Radio Frequency Bioeffects Research,  said the data was not strong enough to indicate a link between mobile phone exposure and behavioural problems.

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