三色性某些礦物質所具有的特性，當放在白光下從三個不同的方向觀察，會呈現出三種不同的顏色
The property possessed by certain minerals of exhibiting three different colors when viewed from three different directions under white lights.
稜鏡這種形狀的透明體，多為玻璃製成，通常兩端為三角形，用來分解穿過柱體的白光，使光束髮生色散或用來反射光線
A transparent body of this form, often of glass and usually with triangular ends, used for separating white light passed through it into a spectrum or for reflecting beams of light.
白熱的熱得以致於發出明亮的白光
So hot as to glow with a bright white light.
