What rhymes with air condenser?
air con·denser

A static condenser whose dielectric is air. The capacity of an air condenser in farads is equal to   A / ( 4.452E12 * t ) in which A is the area of one sheet or sum of the areas of one set of connected sheets in square inches and t is the thickness of the layer of air separating them.

A convenient construction given by Ayrton consists in a pile of glass plates P separated by little bits of glass F of known thickness, three for each piece. Tin-foil T is pasted on both sides of each piece of glass and the two coatings are connected. The tin-foil on each second plate is smaller in area than that on the others. The plates are connected in two sets, each set comprising every second plate. For A in the formula the area of the set of smaller sheets of tin-foil is taken. By this construction it will be seen that the glass does not act as the dielectric, but only as a plane surface for attachment of the tin-foil. Posts E E keep all in position. One set of sheets connects with the binding post A, the other with B.

The capacity of any condenser with a dielectric of specific inductive capacity i is given by the formula:      ( i *A^1 ) / ( 4.452E12 * t1 )

The air condenser is used for determining the value of i for different dielectrics.

Fig. 6. AIR CONDENSER.

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