עד היום חשבו שספירלות נוצרות בטבע במקרה או שסיבתן עלומה. כעת, מחקרים אחרונים מראים כי הן נוצרות מסיבה מסוימת ויש להן מטרה

רקפת תבור | 14 בספטמבר 2020 | מדע וטכנולוגיה | 8 דק׳

סוד הספירלות

ספירלה היא אחת מתבניות הטבע המעניינות ביותר. אפשר למצוא ספירלות כמעט בכל מקום: באצטרובלים, בשבלולים בזירעונים של פרח החמנייה, בסופות טרופיות כמו הוריקנים וציקלון, ואפילו באמבטיה שלנו כאשר אנו מנקזים את המים ונוצרת מערבולת ספירלית. הן מופיעות כמובן גם בשמי הלילה: כשנסתכל בטלסקופ נראה שכ-70 אחוז מהגלקסיות מופיעות בצורת ספירלה בעלת זרועות מרשימות.

אבל למה ללכת רחוק? אם תסתכלו על קצות אצבעותיכם, על החלק שממנו לוקחים את טביעות האצבע, תמצאו שמסתתרות שם ספירלות קטנות וסדורות. אפילו בקודקוד הראש, השערות ערוכות בצורה ספירלית.

הופעתן הברורה בטבע מסבירה מדוע הן שולבו באמנות ובארכיטקטורה של תרבויות העבר. בתרבות המינואית (3000 עד 1500 לפנה"ס) למשל, ששגשגה באי כרתים, ספירלות עיטרו את הכדים המעוצבים ואת שולי ציורי הקיר המרשימים של מבניה. חוקרים טוענים שעם השנים הן נקשרו גם להיבטים דתיים וסימלו עוצמה^[1].

רוצה לקרוא עוד?

להמשך קריאה הירשמו או התחברו

באצטרובלים, ובפרחי החמניה, נוכל למצוא ספירלות המאפשרות ניצול מטבי של השטח | [Shutterstock]

"אלוורה ספירלית" - צמח נדיר שמקורו באפריקה | [Shutterstock]

אילוסטרציה: מגזין אפוק

ויטמין חחח: התרופה שהרופאים שוקלים לרשום לכם

רקפת תבור

אילוסטרציה: מגזין אפוק

המחשבה כתרופה או כרעל – המחקרים שמראים שהכול באמת בראש

רקפת תבור

אילוסטרציה: מגזין אפוק

מנהגי מרוצים ועד ניצולי תאונות: כיצד אנשים מסוימים יכולים "להאט את הזמן"

מאיה מזרחי

אילוסטרציה: Shutterstock

״נדיר ביותר ובלתי סביר״: המדענים שחוקרים ילדים עם זיכרונות מחיים קודמים

מאיה מזרחי

איור אילוסטרציה: מגזין אפוק, Shutterstock

האם הסוד לחיי הנעורים נמצא במעמקי גופנו?

רקפת תבור

הלב מזוהה אוניברסלית כסמל לאהבה, ובאופן מעניין, האהבה יכולה להשפיע באופן משמעותי על הלב עצמו | אילוסטרציה: מגזין אפוק, Shutterstock

חשבנו שאהבה היא רק רגש – המחקרים מראים שהיא גם תרופה

רקפת תבור

הירשמו לניוזלטר שלנו וקבלו תוכן חדש למייל מדי חודש

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