Zerodur
Zerodur (notation of the manufacturer: ZERODUR®), a registered trademark of Schott AG, is a lithium-aluminosilicate glass-ceramic produced by Schott AG since 1968. It has been used for a number of very large telescope mirrors including Keck I, Keck II, and SOFIA, as well as some smaller telescopes (such as the GREGOR Solar Telescope). With its very low coefficient of thermal expansion it can be used to produce mirrors that retain acceptable figures in extremely cold environments such as deep space. Although it has advantages for applications requiring a coefficient of thermal expansion less than that of borosilicate glass, it remains very expensive as compared to borosilicate. The tight tolerance on CTE, ±0.007×10−6 K−1, allows highly accurate applications that require high-precision.
primaryTopic
Zerodur
Zerodur (notation of the manufacturer: ZERODUR®), a registered trademark of Schott AG, is a lithium-aluminosilicate glass-ceramic produced by Schott AG since 1968. It has been used for a number of very large telescope mirrors including Keck I, Keck II, and SOFIA, as well as some smaller telescopes (such as the GREGOR Solar Telescope). With its very low coefficient of thermal expansion it can be used to produce mirrors that retain acceptable figures in extremely cold environments such as deep space. Although it has advantages for applications requiring a coefficient of thermal expansion less than that of borosilicate glass, it remains very expensive as compared to borosilicate. The tight tolerance on CTE, ±0.007×10−6 K−1, allows highly accurate applications that require high-precision.
has abstract
Le Zerodur est un verre de typ ...... pour la transmission optique.
@fr
Zerodur (Schreibweise des Hers ...... stallisation hergestellt wird.
@de
Zerodur (notation of the manuf ...... ss approximately 0.9 MPa·m1/2.
@en
Zerodur è un materiale in vetr ...... la
* Buona stabilità chimica
@it
ゼロデュア(独:Zerodur )はドイツのショットが開発し ...... を混合することにより、常温付近の膨張率を減らした素材である。
@ja
Wikipage page ID
11,253,931
Wikipage revision ID
738,590,214
subject
comment
Le Zerodur est un verre de typ ...... pour la transmission optique.
@fr
Zerodur (Schreibweise des Hers ...... stallisation hergestellt wird.
@de
Zerodur (notation of the manuf ...... s that require high-precision.
@en
Zerodur è un materiale in vetr ...... la
* Buona stabilità chimica
@it
ゼロデュア(独:Zerodur )はドイツのショットが開発し ...... を混合することにより、常温付近の膨張率を減らした素材である。
@ja
label
Zerodur
@de
Zerodur
@en
Zerodur
@fr
Zerodur
@it
ゼロデュア
@ja