[GH85Carrera]

I think that article is designed for radio geeks and has way more technical information than most people understand.










Atomic Clock. Clock (B) Readings from the Maser are taken by Dr. T.C. Wang (left) and Dr. J.P. Gordon, who helped develop the atomic clock. The instrument will find commercial use in testing television frequencies, helping pinpoint the position of ships at sea as well as checking with utmost accuracy the Earth's period of rotation. 1955


In structural geology, a fold is a stack of originally planar surfaces, such as sedimentary strata, that have been bent or curved during a permanent deformation. The lower Ugab River valley of Namibia is an impressive example of such a process.