infrared

infrared — adjective

1. describing a type of invisible light whose wavelength is longer than that of red

1.形容詞B2
釋義

describing a type of invisible light whose wavelength is longer than that of red light. Human eyes cannot see it, but the skin can feel it as warmth.

例句

An infrared light above the front door helped the camera record visitors in complete darkness.

infrared + noun for technology applications

Meteorologists use infrared satellite images to track the temperature of clouds during a storm.

infrared + noun in scientific context

同義詞
  • thermal

    broader term covering any heat-related phenomenon; infrared specifically refers to a precise wavelength range

反義詞
  • ultraviolet

    radiation at the opposite end of the visible spectrum, with shorter wavelengths than violet light

文法句型

infrared + noun

用法筆記

Infrared is almost always used before a noun (attributive position). Common noun partners include 'light', 'radiation', 'camera', 'sensor', 'heater', 'thermometer', and 'image'.

常見錯誤

❌The sun gives off infrareds that warm the Earth.
✅The sun gives off infrared radiation that warms the Earth.
💡Infrared is an adjective or non-count noun; it does not take a plural -s ending.