Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Energy Efficiency
Energy is never lost, so why save it? 🔍 Tap devices to see 100 input energy split into useful work (green) and wasted heat (red). Incandescent bulbs use only 5% for light, but kettles use 95%! 💡 Compare 3 bulbs with equal brightness: Incandescent 60W, CFL 15W, LED 7.5W. LEDs always use 1/8th the energy! 🎯 Calculate efficiency in the challenge! Supports 7 languages.
Energy Transformation
Does energy disappear, or just change form? 🎢 Set the roller coaster's start and hill heights, then press ▶. The bar's length never changes, only shifting colors between potential↔kinetic energy. Turn on friction and watch red heat grow as it slows down — energy didn't vanish, it turned into heat! See if it can pass a hill higher than the start. 🔄 In Find Transformations, explore 12 energy chains like lamps, solar cells, plants, bike generators, and steam trains. 🎯 Fill in the blanks in the Challenge. Supports 7 languages.
Heat Transfer
Where does heat go? 🔥 Heat four rods—copper, iron, glass, and wood—at once. Watch them turn red as heat spreads and butter melts off—who will win? 🌊 In the Convection tab, move the heater to change how water circulates, and in 🏠 Room mode, decide whether to place the heater and AC on the floor or ceiling. Put them in the wrong spot, and you'll see only one side change! 🎯 Take the challenge to tell conduction and convection apart. Supports 7 languages.