Late in the 15th century, Leonardo da Vinci made the first suggestion that an under water “ship” was possible. His idea is only represented in his drawings and no models were tested. Since that first idea surfaced submarines kept reappearing…
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Medical technology in today’s society is often seen as a treatment or cure for human health issues. The term medical technology refers to the diagnostic or therapeutic application of science to improve the management of health. Unfortunately, the negative impacts…
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The Zeroth Law of Thermodynamics The zeroth law of thermodynamics is concerned with the idea of thermal equilibrium of two or more systems. This is commonly taken to mean equality of temperature. Strictly speaking in classical thermodynamics all systems are…
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Retreating blade stall is a hazardous condition sometimes experienced by helicopters and can greatly increase the chances of a crash. The main cause of this particular type of stall has to do with the rotor speed versus the overall speed…
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Ultrasonic testing in stainless steel manufacturing Ultrasonic evaluation is one form of non-destructive testing. It is based on how pulsed sound waves pass through different materials at different velocities. In other words, if a sound wave is passed through a…
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Researchers have been working for more than a decade towards bringing the long extinct woolly mammoth back to life. Since the 1990s the efforts to resurrect the great beasts have become the crux of a debate over whether humans have…
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Generally, stun guns are used for personal protection and by the police and the military as a non-lethal method to enforce compliance and control. Stun guns don’t permanently injury, but will temporarily disable an attacker. A stun gun is…
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Oprah and others have told you the secret to life. The secret to all success in life is due to the law of attraction. Focus, visualize, and recognize what you need and it will come to you. Is the LOA,…
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For most of us, spacesuits are mysterious, wondrous devices. Utilizing little more than some bulky fabric, complex looking equipment and a visor, these suits allow human beings to exist safely in the vacuum of space – an environment where humans…
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Hydraulic machines work by using the power and pressure of moving fluids, such as water (the name, “hydraulics,” refers to “hydro,” or water. It is similar to a similar type of machine which works by the movement or pressure of…
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