Glass of "glass" can also be how to group words?
[glass] a hard brittle transparent substance. General glass is made of quartz sand, limestone, soda ash and other mixed, melting at high temperature, forming, cooling made. The main ingredient is silicon dioxide, calcium oxide and sodium oxide. in additionThere are borate, fluoride based special glass, safety glass, colored glass and so on.
[Bohr's theory of atoms] the theory of atomic structure based on Rutherford's nuclear structure model, the classical laws of motion and Planck's quantum concepts. The main contents are as follows: (1) atoms can only be in a seriesThe discontinuity of energy state, in the state of atoms is stable, although electronic accelerated motion, but not radiate energy; (2) atoms from a state transition to another state, it is a certain frequency photon radiation, photon energyEqual to the energy difference between the two stationary states; (3) the different energy states of the atom correspond to the motion of electrons along different circular orbits.
[interpretation] [l] glass #b only a sand and limestone made of hard and brittle transparent objects. Some of the things like glass: glass paper, glass steel.
