application of physics

(i) Radioactive dating This gives us an approximate age of the rock or material containing the radioactive atoms. For e.g., A measurement of a fraction of uranium atom which have decayed into lead (by knowing the half life of uranium) tells us how old the rock is. (ii) Radiation from space conve..

Applications of Lasers - The development of the laser has opened many avenues of investigation and improved many others. The important characteristics that have contributed to its usefulness in these many areas are tile coherence, monochromaticity and great intensity of its radiation. (i)..

The phenomenon of electrolysis has many scientific and commercial applications..

Applications of Elasticity - Mechanical properties like strength, stiffness (Rigidity), ductility, malleability and brittleness have to be carefully studied to select a material for a particular job. The metallic parts of machines should not be subjected to stress beyond the elastic limit..

The thickness of the metallic rope needed to lift a given load is decided using the knowledge of elastic limit of the material of the rope and the factor of safety. Electric poles are made hollow A hollow shaft is found to be stronger than a solid one because the torque required to twist a hollow c..

While catching a moving cricket ball, a player lowers his hands after catching the ball. Automobiles are provided with spring systems to reduce the damage to the vehicle when it receives a shock. A man falling from a certain height gets injured more severely when he falls on concrete when c..

Mechanical properties like strength, stiffness (Rigidity), ductility, malleability and brittleness have to be carefully studied to select a material for a particular jo..

An optical instrument, which is used for observing pure spectra of sources of light in the laborator..

A photocell converts the change in the intensity of light into a change in the electric current. The diagram shows a photocell circuit. The cathode is made of photosensitive materia..

These are in the measurement of temperature and in thermoelectric generators and refrigerato..