Does the picture tube of TV set emits harmful radiations?

Question

Telivision picture tube has cathod tubein it, then why dont we get x-ray radiations from it? Is there any other hazardous radiations from it?

Answer 1

This question should be asked more often. The electrons that make the picture are accelerated to about 20000 volts. They hit the phosphors on the screen and produce the picture, and also soft X-rays. The glass on the screen is made to absorb most of the X-rays. By comparison, when you receive a medical X-ray, the accelerating voltage is higher, about 5 times as high, so more ionising radiation is produced, and the window is made as transparent as possible to X-rays. It's made of beryllium, not heavy metal containing glass. So a TV cathode ray tube emits a much smaller dose of X-rays than a medical X-ray tube. But it's still a bad idea to get up close to it. Plasma screen, LCD and projection TVs don't emit X-rays, except with a negligible amount from plasma screens. I can't afford a wide-screen TV and consider them a bit of an extravagance, but one argument in their favour is that you sit further back.

Answer 2

X-rays may be produced when electrons, accelerated by high voltage, strike an obstacle while traveling in a vacuum, as in a TV containing a cathode ray tube (CRT). Since many of the components in television sets operate at thousands of volts, there is the potential for x-ray generation. These components may produce x-rays capable of escaping from the television receiver or CRT. This unintentional emission of x-radiation can pose a potential hazard and must be contScientists have not identified specific health effects resulting from exposure to extremely low doses of low-level radiation over prolonged periods of time. However, the current assumption is that there is no threshold of exposure below which x-radiation may not adversely effect human health. It is advisable, therefore, that x-radiation from TV sets, as well as other commonly used electronic products, be kept as low as reasonably achievable. It was for this purpose that Congress enacted the Radiation Control for Health and Safety Act of 1968. It should be emphasized that most TV sets have not been found to give off any measurable level of radiation, and there is no evidence that radiation from TV sets has resulted in human injury.
X-radiation emissions from properly operated TV sets and computer monitors containing CRTs are well controlled and do not present a public health hazard. The FDA standard, and today’s technology, such as electronic hold-down safety circuits and regulated power supplies, have effectively eliminated the risk of x-radiation from these products. FDA has not found TVs that violate the standard under normal (home) use conditions.

It is important to note also that flat panel TVs incorporating Liquid Crystal Displays (LCD) or Plasma displays are not capable of emitting x-radiation. As such these products and are not subject to the FDA standard and do not pose a public health hazard.

Answer 3

Mobile phone radiation and health concerns have been raised, especially following the enormous increase in the use of wireless mobile telephony throughout the world (as of August 2005, there were more than 2 billion users worldwide). This is because mobile phones use electromagnetic waves in the microwave range. These concerns have induced a large body of research (both epidemiological and experimental, in non-human animals as well as in humans). Concerns about effects on health have also been raised regarding other digital wireless systems, such as data communication networks. The World Health Organization has concluded that serious health effects (e.g. cancer) are very unlikely to be caused by cellular phones or their base stations[5][6], and expects to make recommendations about mobile phones in 2007–08. However, some National Radiation Protection Authorities, i.e. Austria[1] Germany[2] and Sweden,[3] recommend their citizens to minimize radiation. Examples of recommendations are: * Use hands-free to decrease the radiation to the head. * Keep the mobile phone away from the body. * Do not telephone in a car without an external antenna. For details, refer to the source mentioned below:

Answer 4

Yes and no.

Yes, because it is indeed a cathod ray tube, and so it does produce x-rays.

No, because those x-rays never make it out of the tube. The glass tube is made such that it has a lot of lead in it, which blocks the radiation.

Answer 5

yes, but the dangerous area only extends out in front of the tube a few feet. You are constantly bombarded by human-made radiation, but of course you can't see it. The tv and the radio and your cellphone are designed to draw into your awareness certain frequencies, the rest you are oblivious to, most likely. The standard explanation is that if you remain a certain minimal distance from your tv screen, you are safe. Currently there is questioning and uncertainty about the safety of holding a cellphone up to your ear. The final answers are not in on that.

Answer 6

Yes, soft x rays, under 24 kv by law. the thick glass and plastic front stop most of it. Some gets through and will cause you to have funny looking babies after about two hundred years of constant watching at 5 ft or less Especially in california

Answer 7

An x-ray tube requires at least 30 KV (30,000 Volts) to produce x-ray photons. A cathode ray tube converts electrons into visible light. There is no Tungsten target for converting electrons into x-ray photons.

Answer 8

The rays are hazardous. It is therefore advised not to watch the TV from too close and for too long.

Answer 9

no- there is circuitry in the tv to keep the anode voltage of the crt below 30,000 volts, too low to produce x-rays

Answer 10

no ,,,,,,,, not at all,,,,,,,,,,,TV Screen emits cathode rays but they are not harmful to us