| 释义 |
傅科摆fùkēbǎi用来证明地球自转运动的天文仪器,一根长十几或几十米的金属丝,一端系一个重球,另一端悬挂在支架上。由于地球自转,在北半球,摆动所形成的扇状面按顺时针方向旋转;在南半球则按逆时针方向旋转。因法国科学家傅科(Léon Foucault)发明而得名。{Foucault pendulum; astronomical instrument that demonstrates the rotation of the earth; made by hanging a heavy ball at one end of a long metal wire and attaching the other end to a support. The rotation of the earth causes the fan-shaped plane of oscillation to rotate clockwise in the northern hemisphere, counterclockwise in the southern hemisphere. The instrument is named after the French scientist Léon Foucault.} |