Use of radiation to generate heat such as with baseboard heating where the circulating hot water is radiated through conduction by thin metal fins at the bottom of the wall. The room is warmed by air circulating around the heating unit using convention.
Waterproof cap, also called weatherheads, mast heads or entrance caps, which is placed at the upper part of an electrical mast at the point where the wires are run to the inside electrical meter. Wires hang from the pole to the entrance cap so that the entrance cap is not the low point in the downhill run from the pole because water will run to the low point before dripping to the ground. Wires enter the entrance cap at an upward angle through a tight insulator. Water is further stopped from getting through the entrance cap because of this entrance angle.
Mortgage, most commonly used by the elderly who have substantial equity in their homes. A periodic payment is made to the borrower from the lender thus, increasing the loan balance, causing negative amortization.