← All subjects

Engineering

Design, test, iterate — turning science into things that work.

Core concepts

The design cycle

Define → research → ideate → prototype → test → improve. The loop never truly ends.

Structures

Triangles are rigid; rectangles wobble. That is why bridges are full of triangles.

Tolerance

Every part has an allowed error range. Engineering is designing so those errors never stack fatally.

Try an experiment

30 min

Balloon-powered car

Newton's third law: air pushed backwards pushes the car forwards with equal force.

Related lessons