Transverse waves include waves on a string, electromagnetic waves, and seismic S waves. These are waves in which the particles in the medium move in a direction perpendicular to the path of the wave. Transverse waves travel well in solids, but not in fluids like liquid or gas.
The answer is simple, a lot! And is there such a thing as a jointer planer. No! Each machine does a completely different surfacing operation. A jointer flattens a face or straightens and squares an edge, and a planer thicknesses wood.
Scarf the Rabbet. The scarf joint is one of the oldest techniques used to join pieces of lumber. It consists of two equal notches on the ends of two pieces of wood. To make a scarf joint, cut halfway through both posts with a hand saw; make this cut 6 inches from the ends to be joined. Center another cut vertically down from the end to meet the horizontal cut and create equal notches on both posts.