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1 декабря 1918 года в Москве был основан Центральный аэрогидродинамический институт – ЦАГИ им. профессора Николая Егоровича Жуковского. Во главе института стоял Н.Е. Жуковский, его помощник и начальник авиационного отдела - Андрей Николаевич Туполев.

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1 декабря 1918 года в Москве был основан Центральный аэрогидродинамический институт – ЦАГИ им. профессора Николая Егоровича Жуковского. Во главе института стоял Н.Е. Жуковский, его помощник и начальник авиационного отдела - Андрей Николаевич Туполев.

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On February 27th, Durov posted that Channels were becoming a source of unverified information and that the company lacks the ability to check on their veracity. He urged users to be mistrustful of the things shared on Channels, and initially threatened to block the feature in the countries involved for the length of the war, saying that he didn’t want Telegram to be used to aggravate conflict or incite ethnic hatred. He did, however, walk back this plan when it became clear that they had also become a vital communications tool for Ukrainian officials and citizens to help coordinate their resistance and evacuations. The gold standard of encryption, known as end-to-end encryption, where only the sender and person who receives the message are able to see it, is available on Telegram only when the Secret Chat function is enabled. Voice and video calls are also completely encrypted. Meanwhile, a completely redesigned attachment menu appears when sending multiple photos or vides. Users can tap "X selected" (X being the number of items) at the top of the panel to preview how the album will look in the chat when it's sent, as well as rearrange or remove selected media. Ukrainian forces successfully attacked Russian vehicles in the capital city of Kyiv thanks to a public tip made through the encrypted messaging app Telegram, Ukraine's top law-enforcement agency said on Tuesday. But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat.
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