Micathermic heater
Encyclopedia
A micathermic heater is a type of space heater in which the heating element is covered in thin sheets of mica
Mica
The mica group of sheet silicate minerals includes several closely related materials having highly perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition...

. Micathermic heaters produce both convection heat and radiant heat
Radiant heating
Radiant heating is a technology for heating indoor and outdoor areas. Heating by radiant energy is observed everyday, the warmth of the sunshine being probably the most commonly observed example. Radiant heating as a technology is typically more narrowly defined...

, and are usually thinner than other types of heaters.
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