Thread:Dargoo Faust/@comment-24503208-20180801063427/@comment-24503208-20180801072611

“According to Pasek, one of the more difficult things to measure is the amount of energy in a lightning strike. While atmospheric physicists can approximate lightning bolt energy by measuring the electrical current and temperature of bolts as they occur, the numbers are usually approximations. The team of Pasek and Hurst is the first to investigate the energy in lightning strikes by using geology "after-the-fact" research, rather than measuring energy during a strike. By conducting this lightning strike "archaeology," the researchers were able to measure the energy in a bolt of lightning that struck Florida sand thousands of years ago.

Read more at: https://phys.org/news/2016-08-method-energy-lightning.html#jCp”

Basically speaking he use the samples in the aftermath of a Lightning Strike, not during one.