Wearable technology has a variety of applications which grows as the field itself expands. Experimental physics expands, and is expanded by, engineering and technology. It expands and contracts significantly as its temperature changes. As the fortress expands and develops, new noble positions become available. Rather, it organically expands and grows what came before. Instead, space itself expands with time everywhere and increases the physical distances between comoving points. It then gradually expands outward from the initial spot. On firing, the propellant expands rapidly, pushing the pistons outward. Typically a fluid expands and becomes less dense as it is heated. As the air rises towards the peaks, it expands and cools, and forms clouds. As the cake bakes, it expands and rises. The steam expands and makes the bread rise. The centrifugal clutch expands with increasing speed, engaging a drum. As the brake disc heats unevenly it also expands unevenly. On several occasions, a circumstance expands and progresses across a collection of episodes.