Unitasker refers to a tool or a unit that is capable of doing only one thing. It is also used to refer to people, where a person can manage to do only one task at a time. People think twice before investing in a unitasker, especially in the kitchen where space is constrained. In the case of a person, being …

A tornado is really a small cyclone. It can be up to a mile in diameter, and can cause terrible damage. Tornadoes occur when the conditions to create ordinary thunderstorms are extremely violent, which happens very rarely and only in certain parts of the world. There is an updraft of air, around which winds blow in opposite directions. This starts …

Normally, a loop is a geometrical figure which, when traversed, results in getting back to the same point from where one started. A time loop, also known as temporal loop, is a common plot device in science fiction in which time runs normally for a set period, usually a day or maybe a few hours but then skips back to …

A time capsule is a cache of goods / information created to serve as a mode of communication with people in the future. These may include archaeologists, anthropologists or historians. The capsules are sometimes buried at sites where events are held. The term has been used since about 1939. There are two types of capsules: intentional and unintentional. Intentional time …

A theodolite is a surveying instrument used for measuring horizontal and vertical angles. To measure long distances we use a system known as triangulation we can use, it, for instance, if we want to know the distance to the moon. Astronomers measure the angle of the moon above the horizon at two places on the earth’s surface as far apart …

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 …