Technology / Motors / Vacuum Degassed Bearings: Vacuum degassing is a process used in the purifying of steel for ball bearings assuring a very dense and consistent bearing surface. This results in a longer lasting superior bearing. All Reliance bal MORE
Lifestyle / Coffee / Vacuum-Filter Method: A brewing method that differs from other filter methods in that the brewing water is drawn through the ground coffee by means of a partial vacuum. MORE
Entertainment / Photography / Vacuum Back: Is a camera back with a perforated plate through which air is drawn by a pump. A sheet of film is therefore sucked flat against the plate and held firmly during exposure. Used for special large format MORE
Entertainment / Photography / Vacuum Easel: Is a compact printing frame which ensures firm contact between the film and paper by excluding air between the surfaces. Some types are used to hold the paper flat on the enlarger baseboard when enlar MORE
Science / Periodic Table of Elements / Zirconium (Zr): Atomic number: 40, Atomic mass: 91.22 g.mol -1, Electronegativity: 1.2, Density: 6.49 g.cm-3 at 20?°C, Melting point: 1852 ?°C, Boiling point: 4400 ?°C, Vanderwaals radius: 0.160 nm, Ionic radius: MORE
Technology / Motorcycle / Reed Valves: Reed valves are commonly used in high-performance versions of the two-stroke engine, where they control the fuel-air mixture admitted to the crankcase. As the piston rises in the cylinder the resultin MORE