🔸Pages from Sir Isaac Newton’s handwritten college notebook showing his study of mathematics especially infinite series

کانال انجمن علمی فیزیک مهندسی

🔸Pages from Sir Isaac Newton’s handwritten college notebook showing his study of mathematics especially infinite series, evolution of differential calculus, and binomial theorem, ca. 1664-65. Courtesy of Cambridge University Library.

🔸صفحاتی از دفترچه دست‌نویس کالج آیزاک نیوتن که مطالعه او را در مورد ریاضیات به‌ ویژه سری‌های نامتناهی، تکامل حساب دیفرانسیل و قضیه دو جمله‌ای نشان می‌دهد. مربوط به سال 1665-1664.

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Create: 2024-03-17
Last Update: 2025-06-24 22:41:31

BY کانال انجمن علمی فیزیک مهندسی

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telegram Telegram | DID YOU KNOW?

Date: 2025-06-24| telegram

Telegram auto-delete message, expiring invites, and more

elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.

Export WhatsApp stickers to Telegram on Android

From the Files app, scroll down to Internal storage, and tap on WhatsApp. Once you’re there, go to Media and then WhatsApp Stickers. Don’t be surprised if you find a large number of files in that folder—it holds your personal collection of stickers and every one you’ve ever received. Even the bad ones.Tap the three dots in the top right corner of your screen to Select all. If you want to trim the fat and grab only the best of the best, this is the perfect time to do so: choose the ones you want to export by long-pressing one file to activate selection mode, and then tapping on the rest. Once you’re done, hit the Share button (that “less than”-like symbol at the top of your screen). If you have a big collection—more than 500 stickers, for example—it’s possible that nothing will happen when you tap the Share button. Be patient—your phone’s just struggling with a heavy load.On the menu that pops from the bottom of the screen, choose Telegram, and then select the chat named Saved messages. This is a chat only you can see, and it will serve as your sticker bank. Unlike WhatsApp, Telegram doesn’t store your favorite stickers in a quick-access reservoir right beside the typing field, but you’ll be able to snatch them out of your Saved messages chat and forward them to any of your Telegram contacts. This also means you won’t have a quick way to save incoming stickers like you did on WhatsApp, so you’ll have to forward them from one chat to the other.