A teleprinter is a telegraph transmitter which has a typewriter keyboard and type-printing telegraph receiver. It is widely used in commercial offices and fro public and news services. The machines were developed so that telegraphing could be carried out by competent typists rather than highly-skilled telegraph operators. During the 1920’s and 1930’s they were developed by E.E.Kleinschmidt and the Morkrum …

It is the first prototype of a television system. Imaginary systems of distant seeing were also referred to as telectroscope in the 19th century. In recent times, a installation art by Paul St John with a visual highspeed broadband link between London and New York City has also been called a telectroscope.

A galaxy is a group of large number of stars in the sky which have generally the same origin of evolution, such as our Milky Way. A galaxy may contain billions of stars. A cluster of galaxies, which may have up to 10 or even more galaxies is called a local group. Clusters of galaxies are known as a super …

When comets break up, smaller comets and sungrazers are formed. As these approach the sun, they break into smaller fragments before colliding into it. Sungrazers are classified into families and the largest is the Kreutz family, with over 500 sungrazers. It was discovered by Heinrich Kreutz, a 19thcentury German astronomer who found that some sungrazers came from a larger comet …

A suction excavator is a combination of excavator and a pump for dual function of excavating earth and pumping the soil out. It has an air pump for generating the required flow of air, a nozzle through which air is drawn and a mechanism for separating soil from the air drawn through the nozzle. The excavator is provided with a …

Stimulus shelter is a mechanism that shields us from the barrage of information coming our way every minute. An individual is constantly bombarded by television, mobile phone calls, text messages, emails, social networking messages and the resultant multi-tasking puts a lot of pressure on the brain. In such a situation, concentration and focus is lost and the person has to …

Solid State Drives, or SSDs as they are popularly called, are new age storage drives and are slowly but gradually replacing traditional hard drives. A hard disk has heads, magnetic surfaces and many other complex moving parts, which enable it to function properly but they also make the hard disks fallible. The moving parts also make hard disks slower in …

Many of the most unpleasant aspects of urban life are caused by cars, for both driver and the city itself. Large sweltering expanses of tarmac in cities contribute heavily to the urban heat island effect, whilst cars also become unbearably hot in summer sitting in these urban deserts. Optimizing the heliostatic photovoltaic panels ultimately resulted in their leaf like shape. …

A solar oven or cooker is a device which uses sunlight as its energy source, and costs nothing to run. They are used so as to save wood and end the desertification of the earth. A solar cooker can be used in outdoor cooking, drying and pasteurization, and is one of the many inventions to utilise solar energy, fast becoming …

The solar balloon is designed to trap solar energy using an inflatable plastic thin-film balloon called a solar concentrator. Half the balloon is transparent. When inflated, sunlight falls on it and focuses on a photovoltaic cell placed at its centre. This design reflects sunlight, producing 400 times the electricity that a solar cell would create without the concentrator and has …