Amazing facts of Physics

• Burglar Alarm was invented by Acoustics
• Ballpoint pen was invented by Edwin T. Holmes
• Balloon was invented by John J. Loud
• Electric Lamp was invented by Thomas Alva Edison 
• The long-term pattern of weather in a region is Climate 
• A negative electrode in a cell is Cathode 
• Electric Motor () was invented by Nikola Tesla 
• Clock(Mechanical) was invented by I. Hsing and Liang Ling-Tsan 
• In electronics, a term meaning 'coded as numbers' is Digital 
• A unit of energy content of food is Calorie 
• Minimum velocity with which an object must be projected for it to escape from the gravitational pull of a planetary body is Escape velocity 
• A unit of weight for gems and precious metals is Carat 
• A unit of electric charge is Coulomb 
• The speed of an object leaving the surface of a planet, for example, such that it just escapes the gravitational pull is Escape speed 
• The mechanical coupling of two or more spacecrafts is Docking 
• A phenomenon in which a liquid rises in a thin tube or channel due to surface tension is Capillary action 
• A simple generator, or machine for transforming mechanical energy into electrical energy is Dynamo 
• Cinema was invented by Auguste Marie Louis Nocolas Lumiere and Louis jean Lumiere 
• A situation where one event causes a second this leads to a third, and so on is Chain reaction 
• A beam securely fixed at one end and hanging free at the other hand is Cantilever 
• An effect of surface tension is Capillarity 
• Elevator was invented by Elisha G. Otis 
• A unit of radioactivity is Curie 
• An apparatus for measuring heat is Calorimeter 
• A safety switch that automatically cuts off the current when there is an overload is Circuit breaker 
• Clock (Pendulum) was invented by Christian Huygens 
• The passage of anastronomical body through the shadow of another is Eclipse 
• Electron is One of the basic particles of matter 
• Electronic Computer was invented by J. G. Brainerd, J. P. Eckert, J. W. Mauchly 
• Electric Motor () was invented by Zenobe Gramme 
• A force away from the centre that may appear to be observed during motion in a curve is Centrifugal force 
• The atoms of an element having the same atomic number but different atomic weights are Isotopes 
• A unit for measuring ship's speed is Knot 
• Sound waves which have frequencies above 500 megahertz are Hypersonic 
• The branch of physics that deals with the behaviour of liquids at rest and in motion is Hydraulics 
• A powerful whirling tropical storm that measures 320 to 480 kilometers in diameter is Hurricane 
• Film (talking) was invented by J. Engl, J. Mussolle and H.Vogt 
• Helicopter was invented by Etienne Oehmichen 
• A sensitive instrument for detecting or measuring small electric currents is Galvanometer 
• A point directly above the true centre of disturbance from which the shock waves of an earthquake apparently radiate is Epicentre 
• A practical unit of power which is equal to 550 foot-pound per second or 746 watts is Horse power 
• The waters of the earth, oceans, lakes, rivers and glaciers that cover about three-fourth of the earth's surface are Hydrosphere 
• A form of energy possessed by moving bodies is Kinetic energy 
• Glider was invented by Sir George Cayley 
• Instrument used to measure the relative density of liquids (the density compared with that of water) is Hydrometer 
• Generator was invented by Piciontti