Facts About All

Why do new watches and watches in advertising usually mark 10:10? Many conjectures have been made in this regard. We will try to explain the...

Television was invented much earlier than you might think. The first electrical transmission of television images was the work of JL Bair...

The astonishing manoeuvrability of a helicopter is attributed to its main rotor, the large horizontal propeller that rotates in the upper...

A periscope is constructed and functions similarly to a telescope, with a long tube containing a mirror at each end. The mirrors are moun...

The principle behind refrigeration is that the faster a liquid evaporates, or becomes a gas, the faster it cools what it touches. And a li...

A rare, colourless, odourless gas was discovered in 1898 by two British chemists, Sir William Ramsay and Morris W. Travers. They called i...

An air conditioning machine controls more than the temperature of the interiors. It also controls the amount of moisture, movement, and p...

Facts about A/C for kids In winter, houses are heated with stoves or radiators. On the other hand, in summer, the interior temperature...

Interesting facts about radar for kids Radar is an instrument that can discover at a distance an airplane that flies in the middle of the ...

Pascal calculating machine    In the 1600's, the French scientist Blaise Pascal had invented a machine that could perform arithmeti...

The Vacuum Cleaner is an apparatus for removing dirt from household articles by means of suction, or a combination of brushing and suction. ...

  The interest in observation and measurement took many forms during the Renaissance. Sailors had long been concerned about their exact loca...

An invention is something new which has been thought up or developed by experiment. Airplanes, telephones, light bulbs, wheelbarrows, and sh...

The Geiger counter is an electronic device by which radiations from an electronic tube affect the balance within tube and produce a clicki...

The gas engine is an internal combustion engine, as distinguished from a steam engine; its power is generated in a cylinder. Gasoline or cru...

The galvanometer is a instrument made to detect the presence of an electric current and to register its direction and strenght; based on t...

Machinery consists of complex machines. Such complex ma­chines may be defined as two or more simple machines connected together. There are s...

old camera There are amazing pictures of Newton, George Washington, Beethoven, and other famous men of earlier times. But these pictures ...

The first refrigerators weren't developed until the middle of the nineteenth century. Refrigerators were first used by the meat-packing...

Slot machines (Fruit machines in British English) are the most popular means of playing in casinos today in the United States. Slot machine...