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{{Short description|Sundial built in 1812 in England}} | image_caption = Sundial in Derby Museum ...

...d units in the background are HP 5071A cesium beam clocks. The black units in the foreground are Sigma-Tau MHM-2010 hydrogen maser standards.]] ...lectron states in an atom are associated with different energy levels, and in transitions between such states they interact with a very specific [[freque ...

...many forms for a variety of materials. Screws might be inserted into holes in assembled parts or a screw may form its own thread.<ref>{{harvnb|Oberg|Jone ...xgZ2AC&pg=PA200 | page=200}}</ref> Screws with a left-hand thread are used in exceptional cases, such as where the screw will be subject to [[Clockwise#T ...

''Most of the terms listed in Wikipedia glossaries are already defined and explained within Wikipedia its ..., wearing down, marring, or rubbing away. It can be intentionally imposed in a controlled process using an abrasive. Abrasion can be an undesirable effe ...

...ive. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human [[prehistory]] and ...phy|demographers]] predict that the human population will begin to decline in the second half of the 21st century.<ref>{{Cite news |last1=Cave |first1=Da ...

...[https://books.google.com/books?id=whc4AAAAMAAJ&pg=PT5 digitized version] in [[Google Books]].</ref>]] ...radiation]], radioactive substances such as [[radon]] and [[radium]] found in the environment, and the potential health hazards of non-ionizing radiation ...

...of computer science''' is a list of definitions of terms and concepts used in [[computer science]], its sub-disciplines, and related fields, including te ...tics}}) from the point of view of a {{gli|user}} of the data, specifically in terms of possible values, possible operations on data of this type, and the ...