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George Hart: Three-Finger Rubber Band Spin (May 3, 2016)
Description
Mathematician and artist George Hart demonstrates an engaging geometric challenge that blends manual dexterity with topology. Using nothing more than a single rubber band and three fingers, he reveals how to execute a maneuver that transforms the band from a simple loop into a complex polygonal structure. The exercise illustrates how subtle adjustments in rotation and tension can produce surprising spatial forms.
Original title
ג׳ורג׳ הארט - סיבוב גומייה בשלוש אצבעות (3-5-2016)
המתמטיקאי והאמן ג'ורג' הארט מדגים אתגר גיאומטרי משעשע המשלב מיומנות ידיים וטופולוגיה. בעזרת גומייה אחת ושלוש אצבעות בלבד, הוא מראה כיצד לבצע תמרון המעביר את הגומייה ממצב של לולאה פשוטה למבנה מצולע מורכב. התרגיל ממחיש כיצד שינויים קטנים בסיבוב ובמתח יכולים ליצור צורות מרחביות מפתיעות.
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