1000조 분의 1초를 의미하는 시간 단위.
A unit of time equal to one quadrillionth of a second (10^-15 seconds).
예문:
"The chemical reaction occurs on a timescale of several hundred fs."
"Advancements in fs laser technology have revolutionized eye surgery."
정지 화면을 차례로 보여주는 교육용 필름.
A length of 35 mm film containing a sequence of still images for projection as a slideshow.
예문:
"The teacher used a vintage fs to explain the water cycle."
"Many old fs have been digitized for preservation."