physical and social development

Scientists theorize that the earth began as a waterless mass of rock surrounded by a cloud of gas. Radioactive materials in the rock and increasing pressure in the earth's interior gradually produced enough heat to melt the interior of the earth. The heavy materials such as iron, then sank. The lig..

Mathematics has served as a powerful tool in the development of modern theoretical physics..

The optical microscopes developed in physics are extensively used in the study of biological samples. Electron microscope, X-rays and radio isotopes are used widely in medical scienc..

Conclusion - This completes the five chapters under Unit-1 which has taught all those items (such as bricks, mortar, stores, etc., needed for construction of a house) which are the building blocks for observing, studying, understanding and developing the knowledge of science in general an..

Semiconductors whose conductivity is more than insulators and less than metals are used in electronic devices. The conductivity of the semiconductors increase when light falls on it. Wafers of doped semiconductors are so arranged that when sunlight falls on the arrangement, potential differences ar..

Principle of electrostatics and electromagnetism play a very vital role in all modern scientific developments..

The goal of physics is to provide an understanding of nature. The science of physics was developed to explain our physical environmen..

The SI unit is kilogram. 1 kg is defined as the mass of a platinum-iridium cylinder kept at the International Bureau of W and M at Sevres, France, established in 1887. The atomic structure of mass is yet to be developed..

There has been considerable development in our day to day life due to study and application of Conductors, Insulators, and Capacitors..

The successive generations of communication satellites can incorporate the latest developments in electronics and communication engineering technology. This would help to pack much more capacity into satellites of comparable size. It is possible that with the advances in technology, the ..