It was invented in the Hellenistic era by Apollonius of Perga around 220 BC. However it has also been attributed to Hipparchus around 150 BC
The astrolabe is an ancient astronomical instrument used to determine the altitude of celestial bodies, such as stars and planets, in relation to the observer's position on Earth. It consists of a rotating disk with a sighting mechanism that allows users to measure the angle between the horizon and a celestial body. Navigators and astronomers in the past used the astrolabe for celestial navigation, timekeeping, and determining the positions of stars.
It should be, "Where do you come from?" or "From where do you come?"
No. You could say 'you could have come yesterday', or 'you would have come yesterday', or 'if you had come yesterday', though.
well + come
Yes "Come." is an imperative sentence, in which the subject "you" is implied. "Come?" means that you are asking if you are supposed to come. "Come!" is a stronger version of "Come."
Cartography navigational compass astrolabe aircraft
astrollabe comes from austrila aand is orange
compass, and the astrolabe
== == the astrolabe is to find the altitude of a stellar object
The word astrolabe is a noun. The plural is astrolabes.
astrolabe=star+mechanical clock
Astrolabe: star + Mechanical Clock
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.
what does aastrolabe
To read an astrolabe, level the plum bob, the degree scale, the altitude, and the protractor.