Interest
Proportion of Hacker News items mentioning "thermal" over time.
Mentions
Total number of Hacker News items mentioning "thermal" over time.
A thermal column is a rising mass of buoyant air, a convective current in the atmosphere, that transfers heat energy vertically. Thermals are created by the uneven heating of Earth's surface from solar radiation, and are an example of convection, specifically atmospheric convection. Read more on Wikipedia