Interactive explorationHow can insulation keep warmth in—and heat out?
Open a house wall. Swap its added layer, make it thicker, and reverse the temperatures to see why insulation helps in winter and summer.
Make heat, logic and electrical work visible. Explore why a cold room has a warm side and what insulation actually changes.
Interactive explorationOpen a house wall. Swap its added layer, make it thicker, and reverse the temperatures to see why insulation helps in winter and summer.
Interactive explorationLook through a cold room and follow its refrigerant loop. Count the heat removed and the work added, then try putting both sides in the same room.
Interactive explorationFlip real input bits on a little calculator. Build a result from simple rules, and follow a carry as it crosses four columns.
Close a switch. Follow a complete path. Give current a second route and discover what changes.
Power a motor. Reverse its direction. Add a load and watch speed, current and turning force find a new balance.
Send “SMALL IDEAS!” through a network. Delay a piece, lose another, and watch what the receiver can actually use.
Take these steps at your own pace. Your place is not saved as account progress or scored.