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Radioactivity
The phenomenon of spontaneous disintegration of an unstable nucleus of naturally occurring isotope accompanied by emission of active radiations line a , b and g radiations is known as Natural Radioactivity. These radiations come from the breakup of the central core or nuclei of heav..
Discovery of Radioactivity and Nature of Radiations
>Three types of radiation from recognized radioactive elements are a -particles, b -particles and g -radiation. It was realized that radioactivity of an element is independent of its physical state, its chemical environment or temperature, suggesting that it is a prope..
NUCLEAR PROCESSES
Protons and neutrons Nuclear forces Electromagnetic repulsion between the protons Nuclear fusion and fission reactions Radioactive isotopes Three most common forms of radioactive decay (alpha, beta, gamma) Changes in the nucleus in each type of decay Alpha..
NUCLEAR PROCESSES
Rate of reaction Protons and neutrons Nuclear forces Electromagnetic repulsion between the protons Nuclear fusion and fission reactions Radioactive isotopes Three most common forms of radioactive decay (alpha, beta, gamma) Changes in the nucleus in each type..
Atoms and Nuclei Conclusion
Conclusion - Rutherford's alpha particle scattering experiment explained the structure of atom and the size of nucleus. The Bohr's model explained the hydrogen spectrum. Radioactivity occurs due to nuclei being unstable resulting in the emission of three types of radiations havi..
Uses of lead
1. It is used for water and gas pipes. 2. It is used for the plates of lead-acid accumulators (batteries). 3. As a screen from radioactive rays. 4. In alloys such as type metal, solder, etc. 5. In bullets. 6. To prepare lead tetraethyl, (C 2 H 4 )Pb which is used as an additive..
Nuclear Energy
Nuclear Energy - Nuclear energy is the energy released when certain changes take place in the nucleus of an atom. Nuclear energy is partly renewable and partly non-renewable source of energy. Nuclear fission and nuclear fusion are the two types of reactions that release nuclear energy: a)..
Importance of Studying Transportation
Transportation whether in plants or animals is the key to the efficient assimilation of the nutrients that the organisms synthesise, get from their environment or digest. The study of these processes helps us in many ways. The study of transport mechanisms in plants helps us to understand the uptak..
Importance of Studying Transportation
Importance of Studying Transportation - Transportation whether in plants or animals is the key to the efficient assimilation of the nutrients that the organisms synthesise, get from their environment or digest. The study of these processes helps us in many ways. The study of transport mechanisms in..
Alpha, beta and gamma radiations
In 1899, the study of radioactivity was taken up by Ernest Rutherford. He placed a little radium at the bottom of a small lead box and subjected the rays that emerged from it to the action of a very strong magnetic field at right angles to their direction. He found that the rays separate..
In 1899, the study of radioactivity was taken up by Ernest Rutherford. He placed a little radium at the bottom of a small lead box and subjected the rays that emerged from it to the action of a very strong magnetic field at right angles to their direction. He found that the rays separate..See what our Users say :
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