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.
When supply decreases, the supply curve shifts to the left. When supply increases, the supply curve shifts to the right. Changes in supply can result from events like the following: 1  Change in production costs. 2  Improved technology that makes production more efficient. 3  Industry growth and shrinkage.