The sextant
The sextant
The sextant.
It is a mediaeval instrument for measuring the altitude of the sun and other sky objects, now replaced by the sextant.
No, the astrolabe is no longer commonly used for navigation or astronomy. It has been largely replaced by more modern and accurate tools such as GPS devices and telescopes. Astronomers and historians may sometimes use astrolabes for educational or historical purposes.
compass, and the astrolabe
== == the astrolabe is to find the altitude of a stellar object
astrolabe=star+mechanical clock
Astrolabe: star + Mechanical Clock
The word astrolabe is a noun. The plural is astrolabes.
An astrolabe is an old instrument used to calculate the position of celestial bodies. Here are some sentences.I found an antique astrolabe in an old store.An astrolabe was used before the sextant was invented.Polish that astrolabe so it doesn't tarnish.
An astrolabe helped sailors because it could determine any direction based on the position of the stars. This is why the astrolabe helped sailors.
The scientist used an astrolabe to find the altitude of the sun and stars.