At first, the lampshade was a bag made of silk fibers and soaked in different oxides. For decades, Welsbach
(Welsbach)
Lampshades have become the standard, using a mixture of thorium oxide, cerium oxide and magnesium oxide.
When the lampshade is installed, light the wire, and the wire will burn out, leaving a fragile ceramic shell, as shown in the figure. Because ceramics contain special chemical components and the ceramic net surface area is large, this lampshade has high efficiency. If you want to know more information, the link on the next page contains some reference materials about the latest technology lampshade patent.
So you can find that the steam lamp is very simple. Almost any heated substance will glow. Steam lamps generate heat by burning fuel. Because lampshades can effectively use the heat they receive to generate light, steam lamps use lampshades (for example, instead of lime blocks).