hermetic envelope

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• Hermetic seal — Airtight redirects here. For the G.I. Joe character, see Airtight (G.I. Joe). For other uses of hermetic , see hermetic (disambiguation). A hermetic seal is the quality of being airtight. In common usage, the term often implies being impervious… …   Wikipedia

• Gas compressor — A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are… …   Wikipedia

• writing — /ruy ting/, n. 1. the act of a person or thing that writes. 2. written form: to commit one s thoughts to writing. 3. that which is written; characters or matter written with a pen or the like: His writing is illegible. 4. such characters or… …   Universalium

• Reed switch — Reed relay and reed switches Showing the contacts clearly The …   Wikipedia

• Nixie tube — The ten digits of a GN 4 Nixie tube. A nixie tube is an electronic device for displaying numerals or other information. The glass tube contains a wire mesh anode and multiple cathodes. In most tubes, the cathodes are shaped like numerals.… …   Wikipedia

• industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium

• Sealing wax — is a material which, after melting, quickly hardens (to paper, parchment, ribbons and wire, and other material) forming a bond that cannot be separated without noticeable tampering. Wax is used to verify something such as a document is unopened,… …   Wikipedia

• Artist's book — Artists books are works of art realized in the form of a book. They are usually published in small editions, though sometimes they are one of a kind objects called book art. Artists books have employed a wide range of forms, including scrolls,… …   Wikipedia

• Spiritual evolution — is the philosophical, theological, esoteric or spiritual idea that nature and human beings and/or human culture evolve along a predetermined cosmological pattern or ascent, or in accordance with certain pre determined potentials.This… …   Wikipedia

• Andrew D. Chumbley — Born September 15, 1967(1967 09 15) Died September 15, 2004(2004 09 15) (aged 37) Occupation Magician,[1] writer, p …   Wikipedia

• cocoon — cocoonlike, adj. /keuh koohn /, n. 1. the silky envelope spun by the larvae of many insects, as silkworms, serving as a covering while they are in the pupal stage. 2. any of various similar protective coverings in nature, as the silky case in… …   Universalium