convection-current

Updated: May 25, 2025

There'd have been a convection-current motion of the air in the enclosed space, and minor whirlwinds, and there could even be miniature thunderclouds and lightning. Joe remembered reading that such things had happened in a shed built for Zeppelins before he was born. They came upon an open gallery, and there was a security man looking down at the floor and the Platform.

Murray Leinster - Space Platform