Leona Woods Marshall Libby was a well-known American physicist and the only woman scientist who was part of the team that developed the first American nuclear reactor. The project was also famously known as the Manhattan Project. She was born in 1919 in Illinois and the tall and active girl who resembled an athlete completed her BS in chemistry in 1938 from the University of Chicago (Libby, 1979). She had a special interest in nuclear physics and after successful completion of her thesis met future Nobel laureate Robert Mullikan who had a passion for molecular research. Mullikan was much ...
Essays on Isotope
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Leona Woods Marshall Libby, who was instrumental in the preparation of the first ever atomic bomb, was an American physicist. She was also part of the research team that built the first nuclear reactor in America. She was mentored by Enrico Fermi, the famous Italian physicist who won the Nobel Prize. She was born in Illinois and completed her BS Degree in chemistry at a young age of 18 (Libby, 1979). Later, Leona wanted to pursue her higher education in physics and approached Robert Mulliken, a future Nobel laureate to become one of his graduate students. He accepted her ...
The fossil record of hominids provides evidence for evolutionary processes that ultimately defined and shaped humanity. The record documents the emergence of bipedalism, the origin of the genus Homo, the initial utilization of tools made of stone, the gradual increase in brain size, the appearance of the present-day humans or Homo sapiens, and the development of advanced tools and cultural values. According to the National Research Council (2010), the evolutionary events described in geological records coincided with significant changes in Eurasian and African climate. Hence, they raise the possibility that past environmental features controlled or affected major junctures in ...
Introduction
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has gained significant popularity as well as extreme attention over the last couple of years due to its benefits and positive attributes. LA-ICP-MS has been extensively used in the analysis of biological samples, chemical samples and gemology. The technique of laser ablation inductively coupled plasma mass spectrometry is a significant technique for quantitative chemical analysis (Becker, 2013). Due to its numerous advantages such as rapid and direct analysis of samples, high sensitivity and high spatial resolution, it has been applied in numerous applications in different fields apart from chemistry. The use ...
Sodium
Sodium is an element found in Group I of periodic table according to WebElements Periodic Table of the Elements (n.p), commonly known as the Alkali metals. It is a metal with silver-white color appearance. It is usually found in many different minerals like cryolite, zeolite and amphibole. The most common mineral where it is found is sodium chloride. Sodium is the sixth abundant element in found in earth’s crust. It has an atomic symbol of Na and an atomic number of 11. The atomic mass is 22.98977 and atomic radius is 186pm. Sodium is a very reactive metal. ...