Engineering

The application of science and mathematics to design structures, machines, and systems.

Subcategories

• Civil Engineering — Design and construction of structures, transportation, and infrastructure.
• Electrical Engineering — Circuits, power systems, electronics, and electromagnetism.
• Mechanical Engineering — Machines, materials, and the mechanics of solid bodies.

Articles (6)

• Steel and Alloys Explained: How Carbon and Chromium Work
  Steel is iron with a little carbon, and carbon atoms block the crystal defects that let iron bend, which is why steel is so much stronger than pure iron.
• How Zippers Work: Teeth, Slider and Interlocking Chain
  A zipper closes when a sliding wedge presses two rows of teeth together so each tooth locks into the gap opposite. Here is how the slider and teeth work.
• How Do Airplanes Fly? The Physics of Lift Explained
  Wings generate lift by deflecting air downward and creating lower pressure above the wing. Here is how angle of attack, speed, and wing shape make flight work.
• How Nuclear Reactors Work
  How nuclear reactors split uranium atoms in a controlled chain reaction to make heat, steam, and electricity — fuel, control rods, and safety systems.
• How GPS Works
  How a receiver on Earth calculates position from satellite signals — trilateration, atomic clocks, and the relativistic corrections that keep the system honest.
• 3D Printing: Additive Manufacturing
  How 3D printing builds objects layer by layer — the main technologies (FDM, SLA, SLS, metal powder-bed), where they win against machining, and where they still lose.

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