Ernest Rutherford (Ernest Rutherford) test shoot alpha particles (the nucleus of the helium atom) to the sheet metal. The 2449 and found that this particle can be run through a lot. However, only a minority of particles scattering particles (which Ben from the movement from the original to the various directions.) from the original or reflected to the back!Model from this experiment Rutherford atom model is proposed that "atomic look clear. Consists of a positively charged gathered at the center called the nucleus, which is the total mass of almost all of the atom. The electrons moving around the nucleus with the distance from the nucleus. Compared to the size of the nucleus. And between the nucleus and the electron is empty ".But this model has doubts still can not find the answer.1. Electrons moving with the acceleration will radiate electromagnetic waves, the kinetic energy decrease. Why run around the nucleus electron model of Rutherford. There is no loss of energy, and to include in the nucleus.2. Atoms with more than one electron. When running around the nucleus will manage one by one.3. Positive charge gathered in the nucleus. It is how, in spite the force push.
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