TYCHO BRAHE'S SCIENTIFIC ACHIEVEMENTS.
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who has described a meridian circle for observing the sun,[1]
![](//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Tycho_Brahe_0351.png/450px-Tycho_Brahe_0351.png)
Armillæ a Equatoriæ Maximæ.
while smaller circles became extensively used, particularly
- ↑ Sédillot, Mémoire, p. 196; Wolf's Geschichte der Astronomie, p. 132.