At 72 inches wide by 84 inches long, the California king mattress is perfect for those who want more length in the bed. The California king is 4 inches narrower than a king size mattress, but it is 4 inches longer. This bed size still gives each sleeper 6 inches more sleeping width than a queen size bed.
An induction heater is a key piece of equipment used in all forms of induction heating. Typically an induction heater operates at either medium frequency (MF) or radio frequency (RF) ranges. Induction heating is a non contact method of heating a conductive body by utilising a strong magnetic field.
A convection heater is  a heater which operates by air convection currents circulating through the body of the appliance, and across its heating element. This heats up the air, causing it to increase in volume and so become buoyant and rise. Oil heaters are an example of this kind of heating appliance.