User:Prevert

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Wikipedia:Babel
gl Este usuario é un falante nativo de galego.
es Este usuario tiene el español como lengua materna.
en-2 This user can contribute with an intermediate level of English.
pt-2 Este usuário/utilizador pode contribuir com um nível médio de português.
ca-2 Aquest usuari pot contribuir amb un nivell mitjà de català.
it-1 Questo utente può contribuire con un livello semplice di italiano.
fr-1 Cet utilisateur peut contribuer avec un niveau élémentaire de français.
ast-1 Esti usuariu pue contribuir con un nivel básicu d'asturianu.
an-1 Iste usuario puede contrebuyir con un ran alazetal d'aragonés.
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Picture of the day
Glassy carbon

Glassy carbon is a non-graphitizing, or nongraphitizable, carbon which combines glassy and ceramic properties with those of graphite. The most important properties are high temperature resistance, hardness (7 Mohs), low density, low electrical resistance, low friction, low thermal resistance, extreme resistance to chemical attack and impermeability to gases and liquids. Glassy carbon is widely used as an electrode material in electrochemistry, as well as for high temperature crucibles and as a component of some prosthetic devices, and can be fabricated as different shapes, sizes and sections.

Photograph: Heinrich Pniok
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