Interest
Proportion of Hacker News items mentioning "lightning" over time.
Mentions
Total number of Hacker News items mentioning "lightning" over time.
Lightning is a natural phenomenon consisting of electrostatic discharges occurring through the atmosphere between two electrically charged regions. One or both regions are within the atmosphere, with the second region sometimes occurring on the ground. Following the lightning, the regions become partially or wholly electrically neutralized. Read more on Wikipedia