[Writing this letter] has permitted me, for a moment, to abstract myself from the dry and dreary waste of politics, into which I have been impressed by the times on which I happened, and to indulge in the rich fields of nature, where alone I should have served as a volunteer, if ...
Leó Szilárd and Meitner taught a seminar on nuclear physics and chemistry in 1930. In the early 1930s, the neutron was discovered and the scientific community began to speculate the possibility of creating heavier elements than uranium. And thus, a scientific race began with four teams, Ernest...
In speaking of cause and effect we arbitrarily give relief to those elements to whose connection we have to attend … in the respect in which it is important to us. [But t]here is no cause nor effect in nature; nature has but an individual existence; nature simply is. — Ernst Mach ...
Analytical chemistsdetermine the structure, composition, and nature of substances by examining and identifying their various elements or compounds. They also study the relationships and interactions among the parts of compounds. Some analytical chemists specialize in developing new methods of analysis and ...
Eric Scerri at the University of California, Los Angeles, is among those who has argued for more fundamental changes. He previously proposed that the table could be arranged to maximise the number of “triads”, sets of three elements that share similar properties and are related by their ...
13.If Einstein had known that Hitler had no atomic bomb and that the first atomic bomb would fall on Japan,he would C.A.have continued his scientific research.B.have won another Nobel Prize for physics.C.not have advised starting uranium research in the U.S.A.D.not ...
There he worked under physicist Homi Bhabha, for whom the establishment was later renamed Bhabha Atomic Research Centre (BARC). Ramanna served as director of BARC (1972–78 and 1981–83) and oversaw the country’s first nuclear weapons test (1974). He also headed India’s Atomic Energy ...
Lewis Structure is a simple representation of how valence shell electrons are arranged in a molecule. It tells us that a bond exists between atoms but does not tell us anything about the type of bonds. In the lewis structure, valence electrons are represented by dots, and 2 bonding electrons...
This isotope of Element 114 was short of being “a double magic nucleus” by 9 neutrons. 114 is a magic number for protons and 184 is a magic number for neutrons. A 30 second half-life represents a relative eternity compared to the half-lives of Elements 100 through 109. Refer to the...
The use of lands surrounding nature reserves has typically been inimical to conservation, since it has usually involved heavy use of pesticides, industrial development, and the presence of human settlements in which fire, hunting, and firewood gathering feature as elements of the local economy. ...