The app calculates parameters for water channels with constant flow, slope, and shape. It includes calculations for surface width, water area, wetted perimeter, hydraulic radius, and velocity.
Learn flags, explore countries, test your knowledge
Learn about flags of all 194+ countries with detailed information including names, descriptions, and historical context. Test knowledge with quizzes and trivia. Explore flag designs and compare similar flags. Share results on social media.
View tides and currents for 12,900 global locations without an internet connection. Display real-time data and historical charts. Save favorite locations. Export data as files. Share tide information via email or messaging.