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    • How Do Electric Motors Work?

      How Do Electric Motors Work?

      As society is trying to slowly ween itself off of oil-dependency, the search for alternative fuels continues. One source of alternative "fuel" that already exists, however, is the electric motor. Electric motors are commonly found in vehicles, toys, and other electronic devices but there is still a campaign to improve the quality and efficiency of

    • Specific Gravity

      Specific Gravity

      Specific gravity is a special case of relative density. That is, a substance’s density is divided by the density of water at 4 F (0 C). Since water has a density of 1 gram/cm3 and all of the units cancel, specific gravity is the same number as density, but without any units (dimensionless). Relative density

    • How Does a Segway Work?

      How Does a Segway Work?

      A Segway is a vertical, mobile vehicle that is able to carry a single person between distances. While a bicycle consists of two wheels and a horizontal frame, a Segway consists of two or four wheels and a vertical frame that balances atop these wheels to steady the rider. Segways run on purely electrical energy

    • What is an Ultrasonic Fogger?

      What is an Ultrasonic Fogger?

      An ultrasonic fogger is a device that uses ultrasonic sound waves to break water into millions of individual water droplets that are then sprayed into the air as a thick fog. Ultrasonic foggers are most often used for Halloween decorations as a dry ice replacement. The fog that an ultrasonic fogger produces is not created

    • Seebeck Effect

      Seebeck Effect

      The Seebeck Effect was first discovered in 1821. It describes the thermoelectric phenomenon that results when the temperature differences between dissimilar metals in a circuit are converted into electric current. This is one of three similar processes that relate to conductivity, temperature, and thermoelectricity that was discovered in the 1800s. The Thomson Effect was first

    • Tidal Energy

      Tidal Energy

      Tidal energy is energy that can be obtained from the changing sea levels. In other words, tidal energy is a direct result of tide shifting from low to high. Tidal energy is considered a renewable source of energy since it only uses the energy from tide changes instead of burning or consuming any form of

    • What Are the Steps of the Rock Cycle?

      What Are the Steps of the Rock Cycle?

      The rock cycle is an essential geological model that depicts the unique changes that rock undergoes during a set time period. The three major rock types are sedimentary, metamorphic and igneous. Rocks are formed and obliterated in cycles. The rock cycle depicts the formation, destruction and restoration of rocks. These changes take place due to

    • How Laser Skin Tightening Works

      How Laser Skin Tightening Works

      Laser skin tightening is done through the use of lasers to tighten the old and “loose” skin to give the appearance of youthful skin. After the technology was changed in the early 1990s from the ablative technology to the non-ablative technology, the risk and the recovery times from the treatments have greatly lessened. Especially the

    • How Do Lasers Work?

      How Do Lasers Work?

      Lasers have revolutionized the way that many devices and machinery work. From CD players to machines that cut metal, lasers play an important part in many daily activities, right under the noses of unaware consumers. Lasers are used in dental drills, tattoo removal, hair replacement, eye surgery, and there is now even a method of

    • How Do Rockets Work?

      How Do Rockets Work?

      Since the United States first landed a man on the moon, children and adults have been fascinated with how rockets work! Whether one is trying to fly a small model rocket or launching a star ship to rendezvous with the International Space Station, the principles of how rockets work remain the same. Although rocketry has

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