Travel over five hundred feet underground with Chief Engineer Eileen Schnock. The tunnel she's working on must be able to deliver over a billion gallons of water a day to one of our largest cities....
A guitar pickup is a device that acts as a transducer (a device that receives a signal in the form of one type of energy and converts it to a signal in another form) that captures mechanical...
It is important to measure the size of the animal and understand how each animal?s size and unique needs relate to the area or capacity of its enclosure. Running time 1:15 minutes. Available by s...
It is important to understand different units of weight and measure precisely when taking care of animals. Running time 2:00 minutes. Available by subscription.
n the 1800s, New York City required that all buildings higher than 6 stories be equipped with a rooftop water tower. This was necessary to prevent the need for excessively high pressures at lower...
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