熱ねっ線せん

noun

heated wire; hot wire

Refers to a wire that becomes hot when electricity passes through it, used in heaters, toasters, and similar devices.

• このヒーターは熱ねっ線せんで温あたたまります。

  This heater warms up using a heated wire.

noun

infrared rays; heat rays

Often used in technical or scientific contexts; synonymous with 赤外線 (infrared rays).

See also: 赤外線

• 熱ねっ線せんカメラで夜よるの動どう物ぶつを観かん察さつする。

  Observe nocturnal animals with an infrared camera.