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A Video Screen That Is Also a Camera

Amazing : Researchers from ETH Zurich in Switzerland, however, managed to create a new type of pixel that can simultaneously do both. This hypercharged pixel, called a Fourier pixel, can generate and sense arbitrary light fields and tap into a pixel’s full potential for carrying information by manipulating light’s intensity, oscillation phases, and polarization. The team reported its findings in a paper published yesterday in Nature. We are one step closer to 1984 technology: The telescreen received and transmitted simultaneously. Any sound that Winston made, above the level of a very low whisper, would be picked up by it; moreover, so long as he remained within the field of vision which the metal plaque commanded, he could be seen as well as heard. There was of course no way of knowing whether you were being watched at any given moment...

2026-07-15 原文 →
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SilentShare — A Browser-Based Peer-to-Peer File Sharing App

Have you ever been in a computer lab, classroom, or office where you needed to quickly send a file between your phone and laptop? I run into this problem all the time. Sometimes there's no USB cable, no pendrive, Bluetooth is painfully slow, or uploading to cloud storage just to download the file on another device feels unnecessary. So I decided to build SilentShare . What is SilentShare? SilentShare is a browser-based peer-to-peer file sharing application that lets you instantly share: 📁 Files (up to 50 MB) 💻 Code snippets 📝 Text 🖼️ Images No installation. No account. No server storing your files. Your data goes directly from one device to another using WebRTC . Whether you're sending files from your phone to your laptop, between classmates, or across the internet, SilentShare keeps the process simple. Why I Built It I wanted something that: Opens instantly in any browser Doesn't require creating an account Doesn't upload files to someone else's server Works on desktop and mobile Feels lightweight and fast Instead of relying on cloud storage, I wanted the browser itself to become the transfer tool. Features ✨ Peer-to-peer file transfer using WebRTC 📂 File sharing up to 50 MB (including ZIP files) 🔒 Optional end-to-end encrypted rooms using AES-GCM 📷 QR code invitations with built-in camera scanner 📊 Live progress, transfer speed, ETA, pause & resume 🖼️ Preview support for: Images Audio Video PDFs 💻 Share code snippets with syntax highlighting 👥 Multi-user rooms (around 5 participants) 🌙 Dark & Light mode 📱 Installable as a Progressive Web App (PWA) How It Works Create a room Receive a random room code Share the code, QR code, or invite link Other devices join Start sharing instantly The files are transferred directly between devices instead of passing through a storage server. Privacy One of the goals of SilentShare was privacy. No user accounts No cloud storage No permanent database Nothing stored after the browser tab closes If you set a room password, all transf

2026-07-14 原文 →
AI 资讯

Why do we need classes in PySide6?

While we can build simple applications without using classes using PySide6, But in big applications and Massive coding systems We should use Classes But why? To understand why do we need classes in PySide6 We should first see the Python code First from PySide6.QtWidgets import QApplication , QWidget , QPushButton , QLineEdit import sys class MainWindow ( QWidget ): def __init__ ( self ): super (). __init__ () button1 = QPushButton ( " Button 1 " ) input = QLineEdit () if __name__ == " __main__ " : app = QApplication ( sys . argv ) window = MainWindow () window . show () app . exec () Before talking about why do we need Classes for PySide6 Let's Explain the code first line by line The imports first thing we make the imports we do need: from PySide6.QtWidgets import QApplication, QWidget, QPushButton, QLineEdit The QApplication Is the simply the application we will make, Like empty app on the RAM it do nothing but it's on the RAM if it's alone And the QWidget Is the Blank screen That will be placed on the Empty Application in the RAM The QPushButton Is like any button we are saying in any app Like the Subscribe button on YouTube or like Post button on Twitter QLineEdit is the input bar, Like the input bar of ChatGPT where you put on it your prompt or like The input bar in WhatsApp Where you type any thing on it to send it to your friends The class And finally The thing You clicked on the post for First thing we define the class How can we define it? Why do we need to define it? Why do even we want it? Who created it? (NOOO IAM JUST KIDDING) We can simply define the class in python by just typing class That's it just class then the name of it For Example MainWindow and then a little semi-colon : OR EVEN WE GIVE IT A Parents And Why do we need to define it, For simply use it BRILLIANT RIGHT? And we want the classes in PySide6 for give it a parents QWidget or even QMainWindow , And we will explain both of them right now but before it Let's explain first what does parents

2026-07-14 原文 →