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Self-moving toothpicks forming a star
Description
Discover how a single drop of water can cause broken toothpicks to move on their own and form the shape of a perfect star. This experiment demonstrates the phenomenon of capillarity and the swelling of wood fibers following liquid absorption—a simple physical force that creates impressive movement without any human touch.
Original title
קיסמי שיניים זזים מעצמם ויוצרים כוכב
גלו כיצד טיפת מים אחת יכולה לגרום לקיסמי שיניים שבורים לנוע מעצמם וליצור צורה של כוכב מושלם. הניסוי מדגים את תופעת הנימיות (קפילריות) והתנפחות סיבי העץ בעקבות ספיגת נוזלים, כוח פיזיקלי פשוט שיוצר תנועה מרשימה ללא מגע יד אדם.
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