model atom niels bohr - model cincin batu akik pria elegan
$800.00
Bohr model, description of the structure of atoms proposed in 1913 by the Danish physicist Niels Bohr. model tangga beton rumah 2 lantai The Bohr model of the atom, a radical departure from earlier, classical descriptions, was the first that incorporated quantum theory and was the predecessor of wholly quantum-mechanical models