The document discusses stresses in thin and thick cylinders, as well as thin walled spheres. For thin cylinders with wall thicknesses less than 7% of the inner diameter, three types of stresses develop - circumferential, longitudinal, and radial. Thin walled pressure vessels like spheres and cylinders experience circumferential stresses when pressurized internally. Thick cylinders have wall thicknesses greater than 1/20 the diameter, requiring a different analytical approach due to varying stresses across the thickness. Compound cylinders are made by fitting an outer cylinder over an inner one, producing compressive radial stresses at the interface when cooled. Rotating bodies experience centrifugal stresses distributed symmetrically about the axis of rotation.