Refractors Sentence Examples
- In recent years no noteworthy refractors have been mounted on Great this plan; but type A has been chosen by Grubb for the Me!- great Melbourne reflector, of 48-in.
- 13, is described in detail by Struve (Beschreibung des auf der Sternwarte zu Dorpat befindlichen grossen Refractors von RIH? ?
- Both the Dorpat and the Pulkovo refractors are defective in rigidity, especially in right ascension.