Зоопарк Kаа | United States America (US)

Create: 2021-12-20 Update: 2025-07-02 20:51:00

Линзы, действительно, бывают разные. Тут собирающие и рассеивающие, вогнутые и выпуклые, и даже вогнуто-выпуклые. И самая близкая нам линза – это вторая на гифке, двояковыпуклая – так как именно такую форму имеет линза в нашем глазе. Она фокусирует свет на задней части сетчатки, подобно тому, как лучи лазера сходятся в одной точке. Если эта точка, где сходятся лучи, находится перед или за нашей сетчаткой, то изображение получается не в фокусе – а значит потребуются очки, чтобы сфокусировать изображение.
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NEWS: Telegram supports Facetime video calls NOW!

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.

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