The surface of a solid is no part of the solid, but is simply the boundary of the solid. It has two dimensions only, and any number of surfaces put together will give no thickness.
Fig. 50.
Fig. 51.
Fig. 52.
Fig. 53.
The surface of a solid is no part of the solid, but is simply the boundary of the solid. It has two dimensions only, and any number of surfaces put together will give no thickness.
Fig. 50.
Fig. 51.
Fig. 52.
Fig. 53.