#حجم_صفر @آموزش فیزیک دبیرستان: مهندس سعید نمازی

آموزش فیزیک دبیرستان: مهندس سعید نمازی | United States America (US)

Create: 2025-07-01 Update: 2025-07-09 14:09:16

#حجم_صفر
#نسبیت_عام

مشکل «حجم صفر» یا به‌عبارتی نقاط تکین (singularities) یکی از چالش‌های اصلی در نظریه نسبیت عام اینشتین است.

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🌀 مشکل حجم صفر در نسبیت عام چیست؟

🔹 تعریف:

در برخی شرایط خاص، معادلات نسبیت عام پیش‌بینی می‌کنند که تمام جرم یک جسم می‌تواند در حجمی تقریباً صفر متمرکز شود — یعنی:

> ✅ چگالی = بی‌نهایت
✅ انحنای فضا-زمان = بی‌نهایت
✅ حجم → صفر
📍 نمونه‌ها:

1. در مرکز سیاه‌چاله‌ها (Black Hole):
معادلات نشان می‌دهند که کل جرم به یک نقطه‌ی مرکزی بی‌حجم (نقطه‌ی تکین) می‌رسد.

2. در لحظه‌ی آغاز کیهان (Big Bang):
کیهان از یک حالت فوق‌العاده چگال و با حجم تقریبی صفر شروع شده است.
@physics_school
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⚠️ چرا این یک مشکل است؟

1. بی‌نهایت‌ها در فیزیک = اخطار

وقتی در معادلات فیزیکی «بی‌نهایت» ظاهر می‌شود، معمولاً به این معناست که:

> ❗ «مدل ما دیگر معتبر نیست یا نیاز به نظریه‌ای دقیق‌تر داریم»
@physics_school
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2. شکست نظریه نسبیت عام در مقیاس کوانتومی

نسبیت عام گرانش را کلاسیکی توصیف می‌کند، اما در حجم صفر باید:

ادامه مطلب در پست زیر
👇👇👇👇

@physics_school

آموزش فیزیک دبیرستان: مهندس سعید نمازی

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آموزش فیزیک دبیرستان: مهندس سعید نمازی

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