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The Spinning Vane Inside a Sealed Glass
Description
This video demonstrates a fascinating physical phenomenon in which a paper rotor spins rapidly inside a sealed glass, seemingly without any human contact or direct gusts of wind. This process occurs due to temperature differentials and air currents generated by the heat of the hands, highlighting the fundamental principles of thermodynamics and fluid mechanics.
Original title
שבשבת שמסתובבת בתוך כוס אטומה
סרטון זה מדגים תופעה פיזיקלית מרתקת שבה שבשבת נייר מסתובבת במהירות בתוך כוס זכוכית אטומה, לכאורה ללא מגע יד אדם או משב רוח ישיר. התהליך מתרחש כתוצאה מהפרשי טמפרטורה וזרמי אוויר הנוצרים מחום הידיים ומדגיש עקרונות של תרמודינמיקה ומכניקת נוזלים וגזים.
Video transcript
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