Search results
Results from the WOW.Com Content Network
Strontium-90 is easily extracted from spent nuclear fuel but must be converted into the perovskite form strontium titanate to reduce its chemical mobility, cutting power density in half. Caesium-137, another high yield nuclear fission product, is rarely used in atomic batteries because it is difficult to convert into chemically inert substances.
The Bohr–Sommerfeld model (also known as the Sommerfeld model or Bohr–Sommerfeld theory) was an extension of the Bohr model to allow elliptical orbits of electrons around an atomic nucleus. Bohr–Sommerfeld theory is named after Danish physicist Niels Bohr and German physicist Arnold Sommerfeld .
In atomic physics, the Bohr model or Rutherford–Bohr model was the first successful model of the atom. Developed from 1911 to 1918 by Niels Bohr and building on Ernest Rutherford 's nuclear model , it supplanted the plum pudding model of J J Thomson only to be replaced by the quantum atomic model in the 1920s.
Diagram of an RTG used on the Cassini probe. A radioisotope thermoelectric generator (RTG, RITEG), sometimes referred to as a radioisotope power system (RPS), is a type of nuclear battery that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity by the Seebeck effect.
[37]: 197 He also used he model to describe the structure of the periodic table and aspects of chemical bonding. Together these results lead to Bohr's model being widely accepted by the end of 1915. [61]: 91 Bohr's model was not perfect. It could only predict the spectral lines of hydrogen, not those of multielectron atoms. [62]
For comparison, [citation needed] LiFePO 4 lithium iron phosphate batteries store 90–110 Wh/kg, and the more common LiCoO 2 lithium-ion batteries store 150–200 Wh/kg. A nano lithium-titanate battery stores 72 Wh/kg and can provide power of 760 W/kg.
Strontium is a chemical element; it has symbol Sr and atomic number 38. ... The Sr 2+ ion is quite large, so that high coordination numbers are the rule. [16]
Complementarity as a physical model derives from Niels Bohr's 1927 lecture during the Como Conference in Italy, at a scientific celebration of the work of Alessandro Volta 100 years previous. [ 4 ] : 103 Bohr's subject was complementarity, the idea that measurements of quantum events provide complementary information through seemingly ...