Voice Commands for Siri AI App vs Grating Simulator

Get more out of Siri. Voice Commands is a clear, up-to-date guide to more than 500 things you can say to Siri on iPhone, iPad, Apple Watch, HomePod, AirPods, Mac, Apple TV and CarPlay. Updated for iOS 26, iOS 27 and Siri AI. 500+ COMMANDS, BY TOPIC • 39 categories: calls and messages, alarms and timers, music, maps, smart home, photos, health, translation, math and more • Tap the speaker to hear exactly how to say a command • "Needs Siri AI" shows what the new Siri can do on compatible devices • Follow-up commands show what to say after Siri answers • Search every command in seconds and save your favorites IN YOUR LANGUAGE The commands, the guides and the whole app are available in English, French, Spanish, German, Arabic and Japanese. Commands are written the way people really talk to Siri in each language, not translated word for word. STEP-BY-STEP SETUP GUIDES Set up Siri on each of your devices, then go further: type to Siri, change Siri's voice and language, announce notifications, Shortcuts, smart home, privacy and troubleshooting. Each step shows the exact path in Settings. VOICE TRANSLATION Say what you want in your language (18 languages, iOS 18 or later) and get the English phrase to say to Siri, plus verified commands that do the same thing. SIRI AND IPHONE SEARCH • Ask Siri: "Music commands in Voice Commands" or "My favorites in Voice Commands" • Type "timer" in the iPhone search to find the right command instantly • Add Voice Commands to Control Center, the Lock Screen or the Action button to start voice translation in one tap COMMAND OF THE DAY Get a new Siri command every day: turn on the daily notification at the time you choose, add the widget to your Home Screen or Lock Screen, or just ask Siri: "Command of the day in Voice Commands". FREE AND PREMIUM Free: all commands, search, favorites and the 8 device guides. Voice Commands Premium: no ads, the 14 advanced guides and voice translation. Choose a monthly subscription or a one-time lifetime purchase. Payment is charged to your Apple Account. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel it in Settings › your name › Subscriptions. Terms of Use: https://niceexpress.org/voice-commands-terms.html Privacy Policy: https://niceexpress.org/voice-commands-privacy.html Voice Commands is an independent guide. It is not made by, endorsed by or affiliated with Apple. Siri, iPhone, iPad, Apple Watch, HomePod, AirPods, Mac, Apple TV and CarPlay are trademarks of Apple Inc.

The laser interference pattern is similar to what would be produced by a Laser pointer’s beam passing through a diffraction grating – When you shine a laser pointer (green, 532nm wavelength) through a series of transmission diffraction gratings, you get a beautiful regular array of bright spots. The center spot is the zero-order (undiffracted beam), and the surrounding spots are the various diffraction orders. The symmetry and regularity of the pattern is characteristic of a diffraction grating pattern. This simulation could be used as a demonstration setup for physics education – teaching about wave optics, interference and diffraction. It is a classic physics demonstration that beautifully illustrates the wave nature of light and the principles of diffraction.