Andrew Duff

The Washington Moose Observation Survey is a volunteer “citizen-science” survey that is taking advantage of mobile phones. Using your smart phone syst …

This app shows interactive ray diagrams for five common situations, a plane mirror, convex mirror, concave mirror, diverging lens, and converging lens …

This app shows a basic projectile-motion simulation, in which an object moves under the influence of gravity alone. You can adjust the launch speed, l …

An iPad app about waves, both traveling and standing waves, as well as about beats.免費玩PhysicsWavesHD APP玩免費免費玩PhysicsWavesHD AppPhysicsWavesHD APP LOG …

This app covers the Physics that is included in the second semester of a typical introductory college physics course (Physics I HD is a companion app …

This app covers the Physics that is included in the first semester of a typical introductory college physics course. It is also appropriate for high s …

This app contains some basic information about the annual Boston marathon, held every year since 1897 on Patriot's Day (now celebrated on the third Mo …

This app contains some basic information about the annual Boston marathon, held every year since 1897 on Patriot's Day (now celebrated on the third Mo …

The MassSpringHD app is a basic physics lab, in which a block is attached to an ideal spring. You can set the mass of the block, the spring constant o …

The ColorMix application is a simple app designed to show how you can make any color you like just by adding three colors together. The app can do add …