View project data for d&b loudspeaker systems. Access calculations and optimization details. Share files via email, AirDrop, Dropbox, or iTunes. Open data on iOS devices.
Learn multiplication from 1 to 12 with adjustable difficulty levels. Players receive 5, 3, or 1 life depending on the level. Correct answers earn 10 points, while incorrect ones deduct 1 point and cost 1 life. Completing a table grants an extra life.
Compare observed celestial altitudes with live calculated values for precise navigation. Tap to pause and receive instant feedback. Access data for the Sun, Moon, Venus, Mars, Jupiter, Saturn, 57 navigational stars, and Polaris.