A History of Sandblasting, 1870 – Present

The idea behind sandblasting is to use mechanics to expedite nature’s process of erosion. Rather than waiting for winds to toss sand around until smooth rocks and mountains begin to take shape from the materials deposited from one surface to another, Benjamin Tilghman developed his own machine in 1870 to remove painted and rusted surfaces…

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How to Teach Kids to Solve Sudoku Puzzles

Sudoku puzzles are an extremely enjoyable and fascinating past time. At first glance these puzzles may not appear to be appropriate for kids. Sudoku looks complicated and appear to require advanced math skills. However, neither of these assumptions is true. Sudoku puzzles are totally appropriate for kids of all ages. Kids find sudoku puzzles fun…

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Trampolines – A Simple Jumping Machine

Have you ever been bouncing contentedly on a trampoline in a backyard or gymnasium, and wondered how it is that this simple platform can allow you to jump multiple feet into the air over and over again? Many people think that the elasticity they feel beneath their feet comes from the stretchy synthetic fabric of…

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