Divers usually add lumps of lead to a belt worn around the waist until they just float, just like adding clay to the Cartesian Diver.

• 像在迪卡尔密度计上增加粘土一样,潜水员通常在腰上的带子上增加一个铅团,使作用在其身上的重力和浮力恰好平衡。