artificial satellites

Different Types of Artificial Satellites and their Orbits - The main satellite orbits around the earth are: Low earth orbit Polar orbit Elliptical orbit Geostationary orb..

They can be used for weather forecasting studying the atmosphere telecommunication mapping the Ear..

Low earth orbit lies in the equatorial plane just lying above the atmosphere a few hundred miles u..

Satellites - The moon is a natural satellite of the Earth. We now have a number of artificial satellites (man-made) revolving around the Eart..

To launch an artificial satellite in space, multi-stage rockets are used. It raises the satellite to a predetermined height, projects it in the right direction with a velocity which enables it to revolve around the Earth. This velocity is called the escape velocity. E..

. A good quality service can be continuously ensured by a global operational satellite system. Thus, communication satellites would give a valuable service in addition to the submarine cable and high frequency radio systems. Geostationary communication satellites have ..

The revolution of moon around the Earth and the revolution of an artificial satellite in a circular orbit round the Earth are examples of circular motio..

In 1926, an American rocket engineer Robert Goddard, built and tested the first rocket which used liquid fuels instead of solid gun powder. During the Second World War powerful liquid fuel rockets were built by Germans to carry explosives. Later, Americans started building their own rockets not to ..

Junction diodes are of many types and solar cells are one such. Its working is based on production of potential difference by sunlight. In other words, it is a junction diode that can convert light energy into electrical energy. In such a junction one of them either P or N is made thin so that ener..

>Solar cells or solar cell panels are used in - Artificial satellites and in space probes like Mars orbiters Wireless transmission systems or TV relay stations in remote locations Traffic signals, calculators and in to..