Jasper County Democrat, Volume 2, Number 16, Rensselaer, Jasper County, 29 July 1899 — Lightning and Thunder. [ARTICLE]

Lightning and Thunder.

It is said that lightning may be recognized at a distance of 200 miles 'when cloud's among which it plays are at a high altitude, but that thunder can seldom be heard at a grtniter distance than ten miles. The sound of thunder is also subject to retraction by layers of different density in the atmosphere. as well as to the effects of “sound shadows,” produced by hills and other interposed objects. These are among the reasons for the existence of the so-called “sheet” lightning or “summer’’ lightning which skids to be unattended by thunder.