Glass-to-metal seal little lower than that of the soda-lime glass. Classically high lead containing glasses are used, but it is also possible to substitute these by multi-component glasses e.g. based on the system ---------. Glass-to-metal seal Glass-to-metal seals are a very important element of the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass encapsulated semiconductor diodes, reed switches, pressure tight glass windows in metal cases, and metal or ceramic packages of electronic components. Properly done, such a seal is hermetic (vacuum tight, good electrical insulation, special optical properties e.g. UV lamps). To achieve such a seal, two properties must
Private Parts & Pieces VII: Slow Waves, Soft Stars Private Parts & Pieces VII: Slow Waves, Soft Stars Private Parts & Pieces VII: Slow Waves, Soft Stars is the twelfth studio album by English multi-instrumentalist and composer Anthony Phillips. It was released in August 1987 in the United States by Audion Recording as the seventh instalment in his "Private Parts & Pieces" album series. The album sees Phillips explore ambient and new-age music with synthesisers and guitars. Following the release of his previous album, "", in 1986, Phillips found himself in a situation where he was "plodding along doing the same kind of things" until a lack of commissions