Glass-to-metal seal absorb the stresses from thermal expansion mismatches. Due to its very low vapor pressure, indium finds use in glass-metal seals used in vacuum technology. Gallium is a soft metal with melting point at 30 °C. It readily wets glasses and most metals and can be used for seals that can be assembled/disassembled by just slight heating. It can be used as a liquid seal up to high temperatures or even at lower temperatures when alloyed with other metals (e.g. as galinstan). Mercury is a metal liquid at normal temperature. It was used as the earliest glass-to-metal seal and is still
Room Temperature (album) Room Temperature (album) Room Temperature is a live album by Peter Hammill, originally released on Enigma Records in 1990. On its initial release, the album was only available in North America. It was subsequently re-released on Hammill's own Fie! label. The album documents Hammill's 1990 tour of Europe and North America. Hammill's group for this tour consisted of Stuart Gordon on violin and former Van der Graaf Generator bassist Nic Potter on bass. There was no drummer, hence some of the songs on these recordings have a stripped down, chamber music feel. The group was briefly billed as the Peter