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.
A supply curve illustrates the relationship between the price of the good and the quantity that firms are willing to sell. For example, firms might be willing to sell 600 bushels of wheat at a price of $3, but be willing to sell 900 bushels at a price of $4. The relevant supply curve is drawn below.