der Hauptspiegel
Translation
primary mirror, main mirror
Examples
Der Hauptspiegel des Teleskops ist riesig.
The primary mirror of the telescope is huge.
Grammar Patterns
der Hauptspiegel ((+Genitive)) the primary mirror of... The primary mirror of the telescope collects the light.
Similar Words
Synonyms: Primärspiegel
Etymology
From 'Haupt-' (main, primary) + 'Spiegel' (mirror). The 'main mirror'.
Memory Tips
Imagine the 'head' or most important (Haupt) mirror in a large telescope.