An annuity can be a single life annuity or a joint life annuity where the payments are guaranteed until the death of the second annuitant. It is regarded as ideal for retirees as it is the only income of any financial product that is fully guaranteed.
Definition: The Kelvin temperature scale is an absolute temperature scale based on the definition that the volume of a gas at constant (low) pressure is directly proportional to temperature and that 100 degrees separates the freezing and boiling points of water.
Several temperature scales exist. In America, the Fahrenheit temperature is most commonly used, though the SI unit Centrigrade (or Celsius) is used in most of the rest of the world. The Kelvin scale is used often in physics, and is adjusted so that 0 degrees Kelvin is absolute zero. By Andrew Zimmerman Jones. Definition: Temperature is a measurement of the average kinetic energy of the molecules in an object or system and can be measured with a thermometer or a calorimeter. It is a means of determining the internal energy contained within the system.