@stevefoerster
#Lightning generates temperatures hotter than the surface of the sun, in excess of 20,000 degrees Celsius.

It takes a specific amount of energy to vaporise sand into gas. First the sand has to be heated to around 1700°C, about the temperature of molten lava.

At this temperature, the sand melts. The molten sand then has to heat to just shy of 3000°C, when it vaporises. It takes about 15 megajoules of energy to heat and vaporise a kilogram of sand.

#fulgurite