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How to Invert a Glass of Water Without Spilling 2
Description
A simple scientific experiment demonstrates how atmospheric pressure acts on an inverted glass of water covered by a sheet of paper or cardboard. By understanding pressure differentials, one can see how the upward force exerted by the air is strong enough to hold the water inside the glass against the pull of gravity. The demonstrator uses glassware and playing cards to illustrate this fascinating physical phenomenon.
Original title
איך להפוך כוס מים בלי שהמים ישפכו? - 2 (3.5.2014)
ניסוי מדעי פשוט המדגים כיצד לחץ האוויר פועל על כוס מים הפוכה המכוסה בדף נייר או קרטון. בעזרת הבנה של הפרשי לחצים, ניתן לראות כיצד הכוח שהאוויר מפעיל מלמטה חזק מספיק כדי להחזיק את המים בתוך הכוס כנגד כוח הכבידה. המדגים משתמש בכלי זכוכית ובקלפים כדי להראות את התופעה הפיזיקלית המרתקת.
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