Exposure to the very high intensity electromagnetic fields found in the immediate vicinity of certain sources such as radar installations and TV or radio transmitters can produce electrical shock or a variety of heating effects, which may range from a sensation of warmth to burns and eventual cataract formation.
S 1 is a vertical, perfectly inelastic, supply curve. This represents 'momentary' supply. In most industries, if a firm was asked to produce a large order immediately, it simply would not be able to do it, regardless of the price offered for the order. Supply is perfectly inelastic in the very short run.
While the long run aggregate supply curve is vertical, the short run aggregate supply curve is upward sloping. There are four major models that explain why the short-term aggregate supply curve slopes upward. The first is the sticky-wage model. The second is the worker-misperception model.