The compass has been proven to stand the test of time as a simple instrument with amazing value. The origin of the compass is ancient China, first created during the Qin dynasty of 221-206 B.C. While modern technology, particularly GPS,…
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Sometimes remarkable effects found by scientific experiment start to seem exaggerated over time. Birds that had been believed to choose the most symmetrical mates turn out to be less selective than once thought. Drugs that were thought to be highly…
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Control duplication is common in airplanes. This is usually called dual controls and does not imply that there are two of each control in the airplane. Some of the controls are placed in a central area where they can be…
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I remember the first day in my History of Aviation class at Embry-Riddel Aeronautical University, one of the first people we ever spoke of was Sir George Cayley: “The father of Aviation”; the only predecessors to him being Wan Hu…
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If you were a boys or girls scout, you learned to use the compass as a basic survival skill. Likewise, European explorers traveled to the Americas with the help of the compass. The compass, a device that gives us the…
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The idea of harnessing usable, clean, free energy from the sun is no new idea. The methods involved with the production of traditional photovoltaic (also known as PV) cells are exactly that…traditional. Recently, innovations in the manufacturing process of these…
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The concept of the solar cell is one fairly easy to grasp just by reading the name: it’s a device that takes in and stores energy transmitted by the sun. Solar power is becoming more and more popular as a…
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Gunpowder is also known as black powder. It holds an important place in the history of chemistry. It is primarily used as a propellent, but it can also explode. Gunpowder was invented in China during the 9th century. The Chinese…
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RADAR is an acronym which stands for Radio Detection And Ranging. Several developments with respect to vacuum tube technology led up to the first practical application of radar in World War Two and it played a key role in the…
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Rudolf Diesel once said “The use of vegetable oils for engine fuels may seem insignificant today. But such oils may become in the course of time as important as the petroleum and coal tar products of the present time.” Born…
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