가시광선의 붉은색 영역보다 파장이 길어 눈에 보이지 않지만 열작용이 강한 전자기파.
Electromagnetic radiation with wavelengths longer than those of visible light, often used in thermal imaging and remote controls.
예문:
"The security camera is equipped with IR sensors for night vision."
"Some snakes can detect the IR radiation emitted by their prey."
백금족에 속하며 밀도가 매우 높고 부식에 강한 은백색 금속 원소인 이리듐의 기호.
The chemical symbol for iridium, a dense, silvery-white transition metal in the platinum group.
예문:
"The scientist confirmed the presence of Ir in the meteorite fragment."
"High concentrations of Ir are often found in geological layers from the end of the Cretaceous period."