Radioactivity

are widely used for this purpose. These are typically based on either germanium semiconductor or Na I(Tl) scintillator detectors. They are the preferred choice in cases where the photo-peaks of concern are well separated (IAEA, 1992) [4]. Some radioactivity studies have been previously carried out in soil and sediment samples in some parts of the world (Beaza et al., 1992 [5]; Kannan et al. [6], 2002; Kirchner et al., 2002 [7]; Mehra et al., 2007 [8]; Noordin, 1999 [9]; Patra et al., 2006 [10]; Selvasekarapandian

Radioactivity is a looming threat that many people do not seem to know about. Ever since the Fukushima disaster in Japan, the internet has been swarming with reports about how the radiation can reach the West Coast and harm Californians. This has been confirmed by experts; radioactivity was expected to show up in April and has already been found in kelp along the sea. Radioactivity is a serious threat to humans, and people should be more aware of the risks related to it, especially now, when there

USING RADIOACTIVITY One of the greatest events of twentieth century was the use of radioisotope as a source of energy and as medical and industrial tools. Using radioactivity has been a global issue owing to its very nature. When it is used for peaceful purposes, it is a triumph of science because it can solve energy problems in the form of nuclear energy but the side effects in the form of harmful radiation and harmful radioactive waste is the real limitations of science. This essay will attempt

Radioactivity was first discovered in 1896 by Henri Becquerel. He used fluorescent minerals to study the properties of x-rays. He had photographic plates, which had been wrapped around in black paper with potassium uranyl sulfate that had been exposed to sunlight on top. This had been believed that uranium had absorbed the sun’s energy, then released to create an x-ray. His first experiment had failed due to an overcast over in Paris, but this didn’t stop Becquerel from developing his photographic

Henri Becquerel was a Physicist, while doing some research, he found radioactivity. Henri was born in Paris in 1853, he was born into a family of scientists. Alexander Becquerel, Aurelie Quenard, and Antoine Céasar were his family. His father and grandfather were scientists as well. His father was an expert on solar radiation and his grandfather had invented an electrolytic method for extracting metals from their ores. He learned about physics and chemistry through his university and joined the government

different countries. Now, there are many different types of waste, ranging from the least amount of hazard to the greatest amount of hazard. The ones with the least amount of radioactivity tend to have shorter lives. They decay in less than 30 years and are called, “short-lived”. The ones with a greater amount of radioactivity perish in more than 30 years and are called, “long-lived”. Let’s break these types of wastes into three parts. Low-level waste (LLW), Intermediate-level waste (ILW), and High-level

the discovery of radioactivity. Marie and Pierre Curie came up with the term "radioactivity" to describe Becquerel's discovery. Marie and Pierre extracted uranium from ore and compared the pure uranium to the extracted uranium ore samples. They found that the uranium ore samples contained more radioactivity. Marie's research concluded that the two uranium ore samples, pitchblende and chalcocite, were more radioactive than the pure uranium and so because of the high radioactivity of both of the samples

to sea. The effect cause earthquake in 2011. After the earth quake on June 2011, scientists measured that 5,000 to 15,000 terabecquerels of radioactive material was reaching the ocean. Since the incident in 2011, scientists measured levels of radioactivity in fish and other sea life. Several species of fish from this area had caesium levels that exceeded Japan's regulatory limit for seafood. Scientists say the groundwater leaks could become worse, but warn against drawing conclusions about the impacts

“This work prepared the way for the discovery of the neutron by Sir James Chadwick and, above all, for the discovery in 1934 by Irene and Frederic Joliot-Curie of artificial radioactivity” (Britannica). Marie Curie had stockpiled enough radium so that her daughter, Irene Curie, and her husband discovered artificial radioactivity. This led to ease of locating tumors using radioactive isotopes of certain elements and to the discovery of the neutron in nucleus of atoms. It solved many occurrences that

the pioneer of radiation research and has made many contributions to the health care field, in particular, to that of radiologic sciences. Curie’s accomplishments as a physicist and chemist have brought about enormous scientific breakthroughs in Radioactivity. These discoveries have paved the way for how radiology is practiced today. Marie Curie was born on November 07, 1867 in Warsaw, Poland. Both her parents where school teachers and they placed extreme importance on education (Huso). Curie was