Atomic clocks are designed to measure the precise length of a second, the base unit of modern timekeeping. The International System of Units (SI) defines the second as the time it takes a caesium-133 atom in a precisely defined state to oscillate exactly: 9 billion, 192 million, 631 thousand, 770Read More →
Atomic mass refers to the mass of an atom. It depicts how many times an atom of an element is heavier than one-twelth (1/12th) the mass of one atom of carbon-12 of mass of one carbon atom. … It is measured in unit called amu (atomic mass unit). 1/12 ofRead More →
Inside a cesium atomic clock, cesium atoms are funneled down a tube where they pass through radio waves . If this frequency is just right 9,192,631,770 cycles per second then the cesium atoms “resonate” and change their energy state. … Other electronics in the atomic clock count this frequency. WhyRead More →
The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. … The value of the radius may depend on the atom’s state andRead More →
Gamma decay Gamma rays are a type of electromagnetic radiation . There is no change in mass or charge for this type of decay. What decay decreases the number of protons in the parent nuclide? An alpha particle, with its two protons and two neutrons, is a very stable configurationRead More →
He claimed the bomb’s capabilities are comparable to nuclear weapons, but unlike nuclear weaponry known for its radioactive fallout, use of the weapon does not damage or pollute the environment beyond the blast radius. In comparison, the MOAB produces the equivalent of 11 tons of TNT from 8 tons ofRead More →
He made pioneering contributions to all fields of philosophy and science, he invented the field of formal logic, and he identified the various scientific disciplines and explored their relationships to each other. Aristotle was also a teacher and founded his own school in Athens, known as the Lyceum. When wereRead More →
Yet, the truth is, you can buy uranium ore from places like Amazon or Ebay, and you won’t have to produce any special authorization to get it. … The isotope that is used in bombs and reactors is Uranium-235, which is only about 0.72% of the natural uranium ore. WhatRead More →