Indirect ways of assessing past temperatures, using so-called temperature proxies, take measurements of responses to past temperature change that are preserved in natural archives such as ice, rocks and fossils.
Wikipedia has an article on: Reorder tone. Wikipedia. fast busy signal â(plural fast busy signals) (telephony) An audible signal on a voice phone line that sounds more frequently than a standard busy singal, indicating that no transmission path to the called phone number is available.
definition - Sig Alert. Sig Alert. Sig Alerts are issued by the CHP and are posted on their website, broadcast on radio and television stations throughout California, and signalled to motorists via electronic message signs on the freeways. The term was added in 1993 to the New Shorter Oxford English Dictionary.