Tempelhof Field

The soldiers of the Royal Prussian Air Ship Division stored large amounts of hydrogen gas. They kept some 1000 cylinders in a shed. On 25 May 1894 about 400 of them burst without apparent reason. Damage was considerable [231]. The famous Professor Adolf Martens was appointed scientific head of the consequent investigation. He is seen as the father of materials research and testing in Germany. He founded metal and lattice microscopy and constructed many test machines. Result: The cylinders were made from unsuitable material. Martens made numerous proposals for the prevention of such accidents. The quality assurance program he devised became the basis of the German pressure vessel code.

Getting Started With Dumbbells

Getting Started With Dumbbells

The use of dumbbells gives you a much more comprehensive strengthening effect because the workout engages your stabilizer muscles, in addition to the muscle you may be pin-pointing. Without all of the belts and artificial stabilizers of a machine, you also engage your core muscles, which are your body's natural stabilizers.

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