Ever wondered what it’s like to navigate the Mediterranean using an ancient astrolabe? Hannah Fry sets sail to test the navigation tool first developed by Greek astronomers around 150 BCE. Watch Infinite Explorer bloom.bg/4ozkyP6 | Bloomberg Originals
2:22
Ever wondered what it’s like to navigate the Mediterranean using an ancient astrolabe? Hannah Fry sets sail to test the navigation tool first developed by Greek astronomers around 150 BCE. Watch Infinite Explorer bloom.bg/4ozkyP6 | Bloomberg Originals
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FacebookBloomberg Originals
The astrolabe: the Swiss Army knife of ancient celestial navigation
The astrolabe: the Swiss Army knife of ancient celestial navigation
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An astrolabe – Greek for ‘star finder’ – is an instrument with over 2,000 years of history. They could be incredibly intricate, and were used to help keep time, navigate and cast horoscopes. Curator William Greenwood looks at an example from the Islamic world, and explains how you’d go about using one. | British Museum
6:26
An astrolabe – Greek for ‘star finder’ – is an instrument with over 2,000 years of history. They could be incredibly intricate, and were used to help keep time, navigate and cast horoscopes. Curator William Greenwood looks at an example from the Islamic world, and explains how you’d go about using one. | British Museum
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FacebookBritish Museum
The Astrolabe: How to Make One and Understanding Its Use
The Astrolabe: How to Make One and Understanding Its Use
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The History of Navigation – Part 2 Astrolabe • Octant • Sextant Long before GPS, sailors crossed oceans using science and the sky. 🔹 Astrolabe Originated around 200 BCE and later adapted for ocean travel in the 1400s–1500s. Sailors used it to measure the height of the sun or stars above the horizon to determine latitude. 🔹 Octant Invented in the 1730s, the octant used mirrors to measure angles, allowing sailors to see the sun and horizon at the same time — far more accurate on a moving ship. �
0:12
The History of Navigation – Part 2 Astrolabe • Octant • Sextant Long before GPS, sailors crossed oceans using science and the sky. 🔹 Astrolabe Originated around 200 BCE and later adapted for ocean travel in the 1400s–1500s. Sailors used it to measure the height of the sun or stars above the horizon to determine latitude. 🔹 Octant Invented in the 1730s, the octant used mirrors to measure angles, allowing sailors to see the sun and horizon at the same time — far more accurate on a moving ship. �
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San Diego’s Astrolabe Have you ever wondered how sailors in early times navigate their way through the sea? Astrolabe comes from the Greek word astrolabos which means “to take a star”. It is a navigational instrument used to determine the ship’s latitude by measuring the angle between a star and the horizon. So how does it work? First, the navigators suspend the instrument by a rope or hold it out at arm’s length using the ring at the top. Next, the pivoting pointer called alidade is oriented to
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