An American company has invented a few patches printed on underwear or introduced under it allow respect the privacy of travelers at airport controls blocking x-ray scanners. The time has been conducive to the Nevada corporation Gear Rocky Flats, which in a few days the arrival of Thanksgiving, which will lead to displacement in the U. S. , just to sell a line of underwear whose peculiarity is prevent security apparatus airport X-ray revealing the private parts of passengers. The company in question explains that the mechanism that protects the privacy of passengers is a metal powder composed of an alloy of tungsten and other metals that block X-rays but do not activate metal detectors. The designs of the clothing and the patches are very original. The part of the garment which avoids the scanner designed for the pubic has a fig leaf and models for the chest in the shape of hands. In addition to preserving the privacy of the person, the company has indicated that protects against the dangers posed by the indirect radiation of these types of devices. As for the compatibility or otherwise of the garments with current safety standards, the company argues that it should not present problems. According to its inventor has assured the BBC, Jeff Buske, the fig leaf is thin and conforms to body shape, which makes it difficult to hide something under your underwear. This announcement coincides with the recent announcement by President of the United States, Barack Obama, who has said he hoped to have more than 400 machines installed body control this year in the country's airports. . . 50% of radiation comes from the environment from various sources: space, radioactive minerals in the soil and foods. Even your own body produces radiation! The other half comes from medical tests and treatments as x-rays, according to the EPA. Everyday we receive from sources you never think of even nature itself. The effect of radiation on the body are measured in mSv (milisevert) or mrem (millirem). According to "Environmental Protection Agency" (EPA), a person receives about 620 millirem per year or 6. 2 miliseverts in the United States. 50% of radiation comes from the environment from various sources: space, radioactive minerals in the soil and foods. Even your own body produces radiation! The other half comes from medical tests and treatments as x-rays, according to the EPA. Perature affects the levels of radiation. This means that as you gain height, also increases the level of radiation. The people in Denver are more than those living in Chicago is lower. A long flight from Los Angeles to New York provides between 2-5 mrem (0. 02 to 0. 05 mSv). The TSA has installed 78 new 450 body scanners at airports. However, the controversial scanner 'backscater', which produces x-ray images of passengers almost naked, it emits about 0. 005 mrem. That is, 1 / 1000 of generating a plaque. From your TV to your microwave, all appliances emit radiation. Despite the myths about microwave ovens, the EPA says that if you are in perfect condition, does not emit enough radiation to cause any damage. Most Americans get at least a year to detect X-ray for illness and injury. An X-ray produces between 5 and 10 mrem (. 05 -. 1 mrem), a quantity completely safe, but can affect pregnant women. For the baby to suffer any risk, a pregnant woman has to make at least 500 chest radiographs. Thus, the child will have a 2% chance of suffering some type of cancer, according to the Centers for Disease Control and Prevention (CDC). The limit of radiation that can receive a worker in a nuclear plant like Fukushima is 5,000 mrem (50 mSv) per year according to the rules of the Nuclear Regulatory Commission U. S. Since the nuclear crisis began after the earthquake, workers at the plant have been getting a dangerous amount of radiation. Workers and area residents were evacuated when the radiation levels reached 4 mrem per hour (400 mSv). For the World Health Organization (WHO), exposure to 1000. 000 mrem (1. 000 mSv) and can cause acute radiation sickness. Symptoms include, in principle, redness, burns and hair loss. A dose of 1000. 000 mrem (1. 000 mSv) increases the risk of cancer by 40% until several years after the event. The most common types of cancer from radiation, thyroid and bone marrow (leukemia), according to the American Cancer Society. Also: skin cancer, breast and stomach. A dose of 400,000 mrem (400 mSv) is able to kill 50% of those exposed. Any amount greater than 600,000 mrem (600 mSv) causes immediate death to 100% of the people. Such was the level that was recorded when the bomb on Hiroshima, Japan, in World War II. . . .