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Why Onions Make Us Cry
Description
Discover the fascinating chemical process that takes place from the moment a knife hits an onion to the tears streaming down our faces. This video explains how damaging the onion’s cells releases enzymes that create an irritating gas, and how that gas reacts with the moisture in our eyes to form a mild sulfuric acid, causing that all-too-familiar sting.
Original title
למה בצל גורם לנו לבכות? (3 במאי 2015)
גלו את התהליך הכימי המרתק שמתרחש מרגע חיתוך הבצל ועד לדמעות שזולגות מעינינו. הסרטון מסביר כיצד פגיעה בתאי הבצל משחררת אנזימים היוצרים גז מגרה, ואיך המפגש של הגז עם הלחות שבעין הופך לחומצה גופרתית עדינה שגורמת לצריבה המוכרת.
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