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Why did Leo James Rainwater win The Nobel Prize in Physics in 1975?
The Nobel Prize in Physics 1975 was awarded jointly to Aage Niels Bohr, Ben Roy Mottelson and Leo James Rainwater for the discovery of the connection between collective motion and particle motion in atomic nuclei and the development of the theory of the structure of the atomic nucleus based on this connection.
What are the different types of seconds?
The different types of seconds include astronomical seconds (based on Earth's rotation), atomic seconds (based on atomic clocks), and ephemeris seconds (based on the motion of celestial bodies). These types of seconds are used in various fields such as astronomy, physics, and timekeeping.
An atomic clock is based on transactions in?
An atomic clock is based on the vibrations of atoms, typically cesium or rubidium atoms. It measures time by counting the transitions between energy levels in these atoms, which are extremely precise and stable.
What is the difference between atomic percent and weight percent?
Atomic percent is based on the number of atoms in a sample. So if the sample has x number of oxygen atoms and x number of iron atoms it would report 50% oxygen and 50% iron (atomic percent). Weight percent is based on the mass of the elements detected. So if we used the above example and reported the results as weight percent we would get 22.3% oxygen and 77.7% iron. Weight percent takes into consideration the mass or atomic weight of the elements and not just the number of atoms. Most people use weight percent although for chemistry atomic percent may be more useful.
What kind scientist studies motion?
A physicist studies motion. This field of study includes understanding the properties of objects in motion, analyzing the causes of motion, and predicting the behavior of objects based on their motion.
Discovery of the atomic bomb was partially based on his studies.?
Leo Szilard invented the atomic bomb in 1933 while studying possible ways to more effectively perform atomic transmutation experiments with neutrons, that he was working on at the tim in London.
The invention of the atomic bomb was partially based on whose studies?
The invention of the atomic bomb was partially based on the studies of Albert Einstein and his theory of relativity that led to the understanding of mass-energy equivalence, as well as the work of physicist Enrico Fermi on nuclear reactions and Otto Hahn and Fritz Strassmann's discovery of nuclear fission. These contributions played a role in the development of the scientific principles behind the atomic bomb.
What discovery did Henry Moseley lead him to reorganize the periodic table?
In 1914 Henry Moseley found a relationship between an element's X-ray wavelength and its atomic number (Z), and therefore resequenced the table by nuclear charge rather than atomic weight. Before this discovery, atomic numbers were just sequential numbers based on an element's atomic weight. Moseley's discovery showed that atomic numbers had an experimentally measurable basis.
How did Henry Moseley revise mendeleevs periodic table?
In 1914 Henry Moseley found a relationship between an element's X-ray wavelength and its atomic number (Z), and therefore rearranged the table by nuclear charge / atomic number rather than atomic weight. Before this discovery, atomic numbers were just sequential numbers based on an element's atomic weight. Moseley's discovery showed that atomic numbers had an experimentally measurable basis.
How was the periodic table first organized atomic number or atomic mass?
The periodic table was first organized by atomic mass. However, after the discovery of isotopes and inconsistencies around this method, it was later rearranged based on atomic number, which reflects the number of protons in an atom's nucleus.
State the periodic law on which Mendeleev's Periodic table was based and why and how this periodic law changed?
Mendeleev's Periodic Table was based on the periodic law which states that the properties of elements are a periodic function of their atomic masses. This law changed with the discovery of atomic number by Moseley which stated that the properties of elements are a periodic function of their atomic numbers, leading to a more accurate and modern periodic table based on atomic number.
On what were the original atomic weights based?
The original atomic weights were based on the mass of hydrogen.
How did Ernest Rutherford change the atomic model based on his experimental results?
Ernest Rutherford's famous gold foil experiment led to the discovery of the atomic nucleus. This discovery changed the atomic model by replacing the plum pudding model with the planetary model, where electrons orbit a central nucleus. Rutherford proposed that the nucleus contained positively charged protons while the electrons orbited around it.
Why was Moseley able to resolve the discrepancies in Mendeleev's table when Mendeleev could not?
Moseley's discovery of atomic number allowed for organizing elements based on their atomic number rather than atomic weight, leading to a more accurate arrangement of elements. Mendeleev's periodic table was based on atomic weight, which resulted in discrepancies. Moseley's insight helped to resolve these discrepancies and create a more precise periodic table.
When did mosley create his periodic table?
Henry Moseley created his periodic table in 1913 by arranging elements by their atomic number, a fundamental change from the earlier practice of ordering elements by atomic weight. Moseley's work led to the modern periodic table we use today.
Which scientist discovered that the atomic number rather than the atomic weight is more responsible for the properties of an element?
Henry Moseley, a British physicist, made this discovery in 1913 through his experiments with X-ray spectra. Moseley's work led to the reorganization of the periodic table based on atomic number instead of atomic weight.
What is the atomic based on?
It is based on number of protons. Consider an element has 20 protons.Its atomic number is twenty.
