There’s some variance from vape to vape, but most Atman devices use a conduction heating system. When you place your material in an Atman’s vape oven chamber, the walls of that chamber begin to heat up, which also raises the temperature of the material itself. Eventually, it gets so hot that vapor is released, which is then inhaled through the device’s airpath. Atman vapes tend to use stainless steel oven chambers so the vapor stays pure and tasty.