• Locomotive Magazine & Railway Carriage & Wagon Review ...

    In addition notes that Cudworth single driver Mail engines in 1860 ran from London Bridge to Dover via Redhill non-stop: 87.5 miles in 120 minutes and that from about 1860 when Tebay water troughs were brough into use the 90 miles from Preston to Carlisle were run non-stop.

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  • Energy – Just Facts

    * Two common measures of energy are British thermal units (Btu) and joules. All forms of energy can be expressed in these units. One Btu is the amount of energy needed to raise the temperature of one pound of water from 39 to 40 degrees Fahrenheit. One joule is the amount of energy needed to lift one hundred grams (3.5 ounces) upward by one meter (3.3 feet) while on the surface of the earth.

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