@irajsafaei اخترشناسی و اندازه گیری | United States America (US)

Create: 2025-04-23 Update: 2025-07-04 13:41:11

تصویربرداری از کمان ماه برفراز استودان کرمان

در ایران باستان بر این باور بودند که چهار عنصر اصلی یعنی آب، خاک، باد و آتش نباید آلوده شود. از آنجا که مردگان را آلوده می‌دانستند. کالبد آنها را زیر خاک نمی‌کردند. مبادا خاک و به‌ویژه آب‌های زیرزمینی آلوده شود. بی‌گمان از همه‌گیری بیماری‌هایی همچون وبا هم آگاه بوده‌اند. از این روی کالبد مردگان را بر فراز کوه می‌گذاشتند. تا پرندگان مردارخوار و به‌ویژه پرنده هُما، گوشت و بخش زیادی از استخوان‌ها را بخورد. آنچه برجای می‌ماند در چاله‌ای می‌ریختند که بدان اُستودان یا همان استخوان-دان می‌گویند. برای آنکه حیوان‌های مردارخوار همچون شغال به کالبد دسترسی نداشته باشند، پیرامون آن را دیواری بلند و گِرد می‌افراشتند. اینجا کمان ماه برفراز استودان کرمان را می‌ببینید که توسط ایرج صفایی مسئول رسدخانه (رصدخانه) دانشگاه کاشان تصویربرداری شده است.

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@irajsafaei اخترشناسی و اندازه گیری

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@irajsafaei اخترشناسی و اندازه گیری

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Telegram hopes to raise $1bn with a convertible bond private placement

The super secure UAE-based Telegram messenger service, developed by Russian-born software icon Pavel Durov, is looking to raise $1bn through a bond placement to a limited number of investors from Russia, Europe, Asia and the Middle East, the Kommersant daily reported citing unnamed sources on February 18, 2021.The issue reportedly comprises exchange bonds that could be converted into equity in the messaging service that is currently 100% owned by Durov and his brother Nikolai.Kommersant reports that the price of the conversion would be at a 10% discount to a potential IPO should it happen within five years.The minimum bond placement is said to be set at $50mn, but could be lowered to $10mn. Five-year bonds could carry an annual coupon of 7-8%.

تصویربرداری از کمان ماه برفراز استودان کرمان

@irajsafaei اخترشناسی و اندازه گیری TG
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Telegram Updated: 2025-07-04 13:41:11

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