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  • What Is a Ballast?

    Ballasts are heavy material, often seawater, placed in the hold of a ship to gain stability. Routine ballast discharges from oil tankers account for a large portion of the total oil (including...

  • How to Measure the Water in a Well by Dropping Stones

    For deep wells, it can be difficult to determine the depth of the water because you cannot see the bottom. However, using physics it is possible to calculate the depth of the water because once...

  • What Is the Value of the Self-Ionization Constant of Water?

    Water is a simple molecule with profound physical and chemical properties. One property, its ability to split into two ions (ionization), provides us with a method to determine the acidity or...

  • Water Clock Instructions

    The water clock is one of the oldest methods of telling time. It is not known who invented the first water clock, but the device dates back into the far reaches of history. Variations on the water...

  • Solar Heating Information

    As the world becomes more environmentally conscious, interest in alternative means of heating, cooling and energy production continues to increase. Solar heating is one environmentally conscious...

  • How Does a Whirlpool Work?

    A whirlpool is a vortex, a spinning body of water around a central point. Whirlpools can vary from tiny eddy currents in a stream to huge tidal flows powerful enough to swamp small boats. Most of...

  • How Does Solar Water Heating Work?

    Solar water heating is one of the most cost-effective methods of harnessing the sun's thermal energy. Adding solar heating to a home's energy equation can minimize utility costs and reduce your...

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