Visceral Pleura: Covers the lungs and Parietal Pleura covers the internal surface of the thoracic cavity. There is a potential space between the viscera and parietal pleura, known as the pleural cavity. But is actually all connected, These two parts are continuous with each other at the hilum of each lung.
The right way to uncoil. There is only one correct way to uncoil wire rope. One person must hold the end of the rope while a second person rolls the coil along the floor, backing away. The rope is allowed to uncoil naturally with the lay, without spiraling or twisting.
You can wrap the coils directly around the core materials, as described in the Procedure, or you can make a single coil (for each number of turns that you want to test) and test it with different core materials inside. Here is a procedure for making coils so that you can swap the core material: