Lightning produces many phenomena, but one is pops, clicks, and whistles in the radio frequencies. Learn why, how, and what the upper atmosphere has to do with it!
Fun Paper Friday
- Should there be speed bumps that say "rate your pain" at the entrance to the emergency room? These authors say it could be useful!
- Ashdown, Helen F., et al. "Pain over speed bumps in diagnosis of acute appendicitis: diagnostic accuracy study." Bmj 345 (2012).