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...energy. As a result, an electron orbiting in this way would rapidly spiral into the nucleus as its electrical energy reduced. Clearly, this doesn’t happen, so electrons cannot really be simply orbiting the nucleus. Consequently this model didn’t remain in vogue for too long. By the 1920’s a branch of physics known as of quantum mechanics began to stamp its mark on...

...energy costs by 50%. Can use lower casting temperatures. Materials: CLA process has been applied to several alloy systems, these include: aluminium-based alloys nickel-based alloys stainless steels cobalt-based alloy for surgical implants. The CLV process is used for vacuum cast alloys, to reduce contamination by reactive elements such as nickel-, cobalt- and...

...Minimum practical forging thicknesses: conventional 5 mm orbital 2.5 mm Thickness tolerances on warm forging of steel at 700–800˚C are ±0.15 mm. Reduced oxide scale formation compared with hot forging applications. Orbital forging should produce 25% material savings and 50% reduced energy costs. See Also: Upset forging, Hot forging (open die) and Powder forging....

...energy from the sun keep the Earth warm, but throughout the history of our galaxy, all the atoms from which we are made have originated from the pristine hydrogen in stars, so we're quite literally the ashes of long dead stars, or, to put it another way less romantically, the nuclear waste of the fuel that made those stars shine. Martin says that when we look around at...

...solar system, the requirements are framed differently. They stipulate that the chances of inadvertent contamination of its internal ocean must be less than one in 10,000 per mission. Unrealistic standards? None of these rules have any force in law, and there are fears that they are liable to be be bent or broken on cost-saving grounds. Rather than leave them in place to...