What is tusi or 'pink cocaine'?
0:59
What is tusi or 'pink cocaine'?
17.2K viewsOct 24, 2024
YouTubeWashington Post
How History Speaks on Instagram: "What looks like a simple marble toy is actually a 700-year-old mathematical idea in motion. This device demonstrates the Tusi Couple, where two perfectly synchronized circular motions combine to create a straight-line path. Invented by 13th-century Persian scholar Nasir al-Din al-Tusi, this principle was once used to explain planetary motion in astronomy. The steel balls only appear to move straight, but their path is the result of pure geometry cancelling curve
0:25
How History Speaks on Instagram: "What looks like a simple marble t…
2K views3 weeks ago
Instagramhowhistoryspeaks
The Tusi couple is a geometric mechanism introduced by the Iranian scholar Nasir Tusi in the 13th century. In this mechanism, a smaller circle rotates inside a larger circle whose radius is twice as big. If a small gear rotates inside a fixed larger gear, and we track the motion of a point on the edge of the smaller gear, its path will not be circular but will instead become a straight line. As a result, this mechanism produces linear back-and-forth motion from purely rotational motion. #mathema
0:19
The Tusi couple is a geometric mechanism introduced by the Iran…
1.6K views1 month ago
TikTokmarmarjoon
worldEdify™🌍 on Instagram: "What looks like a simple marble toy is actually a 700-year-old mathematical concept in action. This device demonstrates the Tusi Couple, where two perfectly synchronized circular motions combine to produce a straight-line path. Invented by 13th-century Persian scholar Nasir al-Din al-Tusi, it was originally used to explain planetary motion in astronomy. The steel balls only appear to move in a straight line, but their motion results from pure geometry canceling curve
0:25
worldEdify™🌍 on Instagram: "What looks like a simple marble toy is a…
27.3K views2 weeks ago
Instagramworldedify
How Tusi Motion Works 🤯
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How Tusi Motion Works 🤯
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ThinkPill on Instagram: "What looks like a simple marble toy is actually a 700-year-old mathematical idea in motion. This device demonstrates the Tusi Couple, where two perfectly synchronized circular motions combine to create a straight-line path. Invented by 13th-century Persian scholar Nasir al-Din al-Tusi, this principle was once used to explain planetary motion in astronomy. The steel balls only appear to move straight, but their path is the result of pure geometry cancelling curves into li
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ThinkPill on Instagram: "What looks like a simple marble toy is actuall…
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