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===Navigational buoys=== ...nically as a replacement for a [[lightvessel]].<ref>{{Cite web|title=Large Navigational Buoys (LNB)|url=http://www.uscg.mil/history/articles/LNB.asp|publisher=Unit ...

{{Short description|Lowest possible energy of a quantum system or field}} ...gardless of temperature at standard atmospheric pressure due to zero-point energy. When cooled below its [[Lambda point]], it exhibits properties of [[superf ...