Background radiation

Medical Imaging and Ionizing Radiation Effects on Human Health Abstract: Ionizing radiation that is used in medical imaging releases free radicals. These radicals can interfere with the molecular chemical bonds that is responsible for regulating the cellular function inside the cell. The interaction between free radicals and the molecules inside the cell might lead to genetic mutations in the DNA and it can damage cellular enzymes leading to the proliferation of cancer cells. In the United States

Radiation is natural part of the Earth. Radiation exists all around us, in the air, the soil, and rock. Humans have lived, and thrived in a radioactive environment since the beginning of time. Radon is one form of radiation, it’s odorless, tasteless, invisible, and it’s in the air we breathe. Cosmic radiation is in space as heavily charged particles and gamma rays. Terrestrial radiation is emitted naturally in the form of heat from the Earth. Then we have manmade radiation. In 1895 Roentgen discovered

) Description of the HPGe gamma-ray spectrometer A high resolution gamma detection system was used for gamma analysis. This system consist of an ORTEC hyper pure germanium detector (HPGe), model number GEM- 15190, coaxial type detector with a serial number 27-P-1876A recommended operating bias, negative 3 Kv. The detector used has crystal diameter 49.3 mm, and crystal length 47.1 mm. The HPGe detector has a full width at half maximum (FWHM) 0.9 keV at the 122 keV gamma transition of Co-57 and 1.9

in 200 Influenza 1 in 500 Natural causes, 40 years old 1 in 850 Road Accident 1 in 8,000 Playing Soccer 1 in 25,000 Accident at Home 1 in 26,000 Accident at Work 1 in 43,500 Hit by Lightning 1 in 10,000,000 Release of radiation from a nearby Power Station 1 in 10,000,000 Radiation Exposure at the rate of: * Theoretical worst case figures * 5 mSv per year 1 in 16,000 50 mSv per year 1 in 1,600 OCCUPATION Deep Sea Fishing (sea accidents before 1970) 1 in 360 Offshore Oil and Gas Industry 1 in 600

The second evidence of the Big Bang is the Cosmic Microwave Background (CMB), which is the electromagnetic radiation left over from the time of recombination in Big Bang cosmology. It represents the first light that travelled in the universe, at the time when the first atoms were formed and the universe was transparent. The scientists Alpher and Hermann deduced that before the recombination epoch, everything was plasma and the light rays would be continually scattered by the particles they encountered

universe. 2 In short, the Big Bang theory explains how a primordial fireball expanded and cooled, and in the first few minutes synthesized helium and other light elements became transparent after 400 000 years releasing the cosmic microwave background radiation, and slowly got clumpier due to gravitational clustering, producing galaxies, stars, and planets.2 However, there is a lot of things that the Big Bang theory does not explain. For instance, why is the universe isotropic? Why is space-time

the event of the explosion. So, since microwaves were coming from space after the explosion it helps prove that the theory is correct. In addition, the microwave radiation is also known as cosmic microwave background radiation. These radiations that travels through all of space helps show that the cosmic microwave background radiation supports the Big Bang theory. Lastly, After the Big Bang scientists discovered a heat signature of 3K. This had shocked scientists because in space the temperature

The single piece of evidence for the Big Bang, if removed, that would cause the theory to lose its credibility it Red Shift. While of course there are other strong pieces of evidence, none are as crucial to the structural integrity of the theory, like red shift is. The reasons that red shift is so vital to this theory are the facts that everything in our galaxy is red shifted, the fact that if the galaxies were stationary, that would mean that they would've been there forever, and the fact that without

eventually the stars and galaxies we see today.” (Cain, 2013) The Big Bang Theory is possibly right because of the evidence/research backed up by it such as exploration done by Edwin Hubble, data found by both Arno Penzias and Robert Wilson, and background radiation that had been found that is believed to be created by the Big Bang. In the first place, Edwin Hubble was an astronomer who found important information of the BBT. His findings originated the Big Bang Theory in the first place. (“The Big Bang

The Big Bang Theory Why is the Universe expanding? What is Cosmic Back Ground Radiation (CBR)? There are many questions asked about our Universe, which we know so little about. Scientists, in their attempt to answer these and other confrontations, have found one idea that seems to explain much of what we don't understand: The Big Bang Theory. An explosion of incomprehensible speed was the beginning of our known Universe and existence. At that time matter as small as the head of a pin inflated