Quick Answer: Fiber-optic data transmission uses pulses of light to rapidly carry huge amounts of information over thin glass or plastic fibers. It’s…

Quick Answer: Atomic clocks keep time by counting the ultra-precise oscillations of atoms, usually cesium-133. By tuning microwave radiation to match an atom’s…

Quick Answer: An internal combustion engine burns fuel inside a chamber to create high-pressure gases that push pistons, turning a crankshaft and ultimately…

Quick Answer: Thermocouples are rugged temperature sensors that work by generating a voltage when two different metals meet at different temperatures. They’re inexpensive,…

Quick Answer: Metals glow when they’re heated because their atoms vibrate more intensely, releasing thermal radiation. As the temperature rises, the peak wavelength…