Incandescent lamps
The most common light source is the incandescent bulb. It is a lamp in which the light is produced by an element heated to the incandescent state due to the flow of current. Low wattage bulbs are usually vacuum, while larger ones are filled with gas (aron, nitrogen, krypton and their mixtures) to improve their efficiency. The category includes incandescent radiators. They are used for heating, additional heating and drying utility rooms.