Create: 2021-05-26 Update: 2025-06-29 18:10:57

📡 #ماه‌گرفتگی ۵ خرداد ۱۴۰۰ [🔗] در ویدئوهایِ تایم‌لپس از رصدخانهٔ گریفیس (Griffith) در ایالت کالیفرنیا، آمریکا. این ماه‌گرفتگی در فاصلهٔ بین مناطق غربی آمریکا و شرق آسیا قابل مشاهده بود.

چندین فاکتور در قرمز دیده شدن رنگِ ماه طی گرفتگی نقش دارند:

۱: نور تابش شده از خورشید به چشمِ انسان سفید به نظر می‌رسد اما در رنگ‌های مختلفی‌ست که طی رنگین‌کمان یا در منشور دیده می‌شود. رنگ‌های متمایل به قرمز دارای طول موج‌های بلندتر و رنگ‌های متمایل به آبی داری طول موج‌های کوتاه‌تری‌اند [🔗].

۲: ساختار لایه‌های جَوِ زمین که از گازها و قطراتِ آب و گرد و غبار مختلفی شکل گرفته.

۱+۲: با برخورد نورِ خورشید به جوِ زمین، نورهایی که طولِ موج‌ بلندتری دارند (متمایل به قرمز) از جو عبور کرده و پس از برخورد با ماه رنگ قرمز ایجاد می‌کنند. — 🌐 — #آسمان_شب — [پست قبل: 🔗]

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Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.

📡 #ماه‌گرفتگی ۵ خرداد ۱۴۰۰ [🔗] در ویدئوهایِ تایم‌لپس از رصدخانهٔ گریفیس (Griffith) در ایالت کالیفرنیا، آمریکا. این ماه‌گرفتگی در فاصلهٔ بین مناطق غربی آمریکا و شرق آسیا قابل مشاهده بود.

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