Miglio orario: differenze tra le versioni

Versione delle 18:26, 4 ago 2015

Versione delle 18:34, 4 ago 2015

Riga 1:

{{S|metrologia}}

Il '''miglio orario''' (abbreviato in '''mph''', '''MPH''' o '''mi/h''') è un'unità del [[Sistema imperiale britannico|sistema imperiale]] e [[Sistema consuetudinario statunitense|consuetudinario statunitense]] di unità di misura per esprimere la velocità in termini di miglia percorse in un'ora. Sebbene i [[Chilometro orario|chilometri orari]] siano diffusi in tuttoo il mondo, le miglia orarie rimangono in uso per indicare i limiti di velocità in:

Regno Unito,<ref>[https://www.gov.uk/speed-limits Speed limits] (UK) Department for Transport. Accesso 4 Agosto 2015</ref> gli USA,<ref name=twsJun15a>{{cite news |title= Modern Living: Think Metric |publisher= ''Time Magazine'' |quote= Meanwhile, the metricization of America is already taking place. Individual federal agencies, school systems, states and industries, as well as radio announcers, supermarkets, beverage bottlers and ballpark scoreboards, are hastening the everyday use of meters, liters and grams. ...a road sign outside Fergus Falls reads, ST. CLOUD 100 MILES OR 161 KILOMETERS. Other signs note that 55 m.p.h. equals 88 kilometers per hour. |date=9 June 1975 |url= http://www.time.com/time/magazine/article/0,9171,913145,00.html |accessdate=15 June 2010}}</ref> e i territori a loro dipendenti; le Bahamas,<ref>{{cite web|url=http://www.thenassauguardian.com/index.php?option=com_content&view=article&id=40272:major-hurricanes-to-hit-the-bahamas&catid=84:hurricane |title=The Nassau Guardian |publisher=The Nassau Guardian |date= |accessdate=2014-08-21}}</ref>il Belize,<ref>http://amandala.com.bz/news/?p=263765&upm_export=pdf</ref> la Dominica,<ref>{{cite web|url=http://dominicanewsonline.com/news/homepage/news/general/ophelia-less-organised-but-still-a-strong-tropical-storm/ |title=Ophelia less organised but still a strong tropical storm |publisher=Dominica News Online |date= |accessdate=2014-08-21}}</ref> Grenada,<ref>{{cite web|url=http://www.grenadabroadcast.com/news/other/15927-troublesome-figures |title=George Grant - TROUBLESOME FIGURES |publisher=Grenada Broadcast |date=2013-07-04 |accessdate=2014-08-21}}</ref> la Birmania,<ref>{{Cita web|url = http://myanmartravelinformation.com/2012-03-20-04-08-32/when-you-arrive/148-travel-information/when-you-arrive/623-dos-and-donts-in-myanmar.html|titolo = Dos and Donts in Myanmar|accesso = 4 Agosto 2015|editore = Myanmar Travel Information|data = 2012|lingua = en|citazione = Speed or distance descriptions are in miles. not kilometers}}</ref> Samoa,<ref>{{cite web|url=http://www.samoaobserver.ws/other/community/3229-gale-warning-issued-apia-town-drowns |title=Gale warning issued, Apia town drowns |publisher=Samoaobserver.ws |date=2013-02-02 |accessdate=2014-08-21}}</ref> Santa Lucia,<ref>{{cite web|url=http://www.thevoiceslu.com/local_news/2008/may/24_05_08/Retrial_goes_ahead.htm |title=The Voice - The national newspaper of St. Lucia since 1885 |publisher=Thevoiceslu.com |date=2004-10-01 |accessdate=2014-08-21}}</ref> Saint Vincent e Grenadine,<ref>{{cite web|author=Thursday, 21 August 2014 03:30:52 (AST) |url=http://www.iwnsvg.com/2010/10/31/st-vincent-appeals-for-aid-as-tomas-leaves-millions-and-millions-in-damage/ |title=St. Vincent appeals for aid as Tomas leaves ‘millions and millions’ in damage – I-Witness News |publisher=Iwnsvg.com |date=2010-10-31 |accessdate=2014-08-21}}</ref> Saint Kitts e Nevis,<ref>{{cite web|url=http://www.thestkittsnevisobserver.com/2012/08/17/ts-isaac.html |title=Businesses Close Early Due to Passage of TS Isaac |publisher=The St. Kitts-Nevis Observer |date=2012-08-22 |accessdate=2014-08-21}}</ref> Antigua e Barbuda (sebbene i km siano usati per le distanze). Le miglia orarie sono anche usate nel sistema ferroviario canadese.<ref name="Classlist">{{cite web

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* Regno Unito,<ref>[https://www.gov.uk/speed-limits Speed limits] (UK) Department for Transport. Accesso 4 Agosto 2015</ref> e i territori dipendenti;

* gli USA<ref name="twsJun15a">{{cite news |title= Modern Living: Think Metric |publisher= ''Time Magazine'' |quote= Meanwhile, the metricization of America is already taking place. Individual federal agencies, school systems, states and industries, as well as radio announcers, supermarkets, beverage bottlers and ballpark scoreboards, are hastening the everyday use of meters, liters and grams. ...a road sign outside Fergus Falls reads, ST. CLOUD 100 MILES OR 161 KILOMETERS. Other signs note that 55 m.p.h. equals 88 kilometers per hour. |date=9 June 1975 |url= http://www.time.com/time/magazine/article/0,9171,913145,00.html |accessdate=15 June 2010}}</ref> e i territori dipendenti;

* le Bahamas,<ref>{{cite web|url=http://www.thenassauguardian.com/index.php?option=com_content&view=article&id=40272:major-hurricanes-to-hit-the-bahamas&catid=84:hurricane |title=The Nassau Guardian |publisher=The Nassau Guardian |date= |accessdate=2014-08-21}}</ref>

* il Belize,<ref>http://amandala.com.bz/news/?p=263765&upm_export=pdf</ref>

* Dominica,<ref>{{cite web|url=http://dominicanewsonline.com/news/homepage/news/general/ophelia-less-organised-but-still-a-strong-tropical-storm/ |title=Ophelia less organised but still a strong tropical storm |publisher=Dominica News Online |date= |accessdate=2014-08-21}}</ref>

* Grenada,<ref>{{cite web|url=http://www.grenadabroadcast.com/news/other/15927-troublesome-figures |title=George Grant - TROUBLESOME FIGURES |publisher=Grenada Broadcast |date=2013-07-04 |accessdate=2014-08-21}}</ref>

* la Birmania,<ref>{{Cita web|url = http://myanmartravelinformation.com/2012-03-20-04-08-32/when-you-arrive/148-travel-information/when-you-arrive/623-dos-and-donts-in-myanmar.html|titolo = Dos and Donts in Myanmar|accesso = 4 Agosto 2015|editore = Myanmar Travel Information|data = 2012|lingua = en|citazione = Speed or distance descriptions are in miles. not kilometers}}</ref>

* Samoa,<ref>{{cite web|url=http://www.samoaobserver.ws/other/community/3229-gale-warning-issued-apia-town-drowns |title=Gale warning issued, Apia town drowns |publisher=Samoaobserver.ws |date=2013-02-02 |accessdate=2014-08-21}}</ref>

* Santa Lucia,<ref>{{cite web|url=http://www.thevoiceslu.com/local_news/2008/may/24_05_08/Retrial_goes_ahead.htm |title=The Voice - The national newspaper of St. Lucia since 1885 |publisher=Thevoiceslu.com |date=2004-10-01 |accessdate=2014-08-21}}</ref>

* Saint Vincent e Grenadine,<ref>{{cite web|author=Thursday, 21 August 2014 03:30:52 (AST) |url=http://www.iwnsvg.com/2010/10/31/st-vincent-appeals-for-aid-as-tomas-leaves-millions-and-millions-in-damage/ |title=St. Vincent appeals for aid as Tomas leaves ‘millions and millions’ in damage – I-Witness News |publisher=Iwnsvg.com |date=2010-10-31 |accessdate=2014-08-21}}</ref>

* Saint Kitts e Nevis,<ref>{{cite web|url=http://www.thestkittsnevisobserver.com/2012/08/17/ts-isaac.html |title=Businesses Close Early Due to Passage of TS Isaac |publisher=The St. Kitts-Nevis Observer |date=2012-08-22 |accessdate=2014-08-21}}</ref>

* Antigua e Barbuda (sebbene i km siano usati per le distanze).

{{Div col end}}

Le miglia orarie sono anche usate nel sistema ferroviario canadese.<ref name="Classlist">{{cite web

| title = A. Classes of Track

| work = Rules Respecting Track Safety

Riga 10 ⟶ 26:

| archivedate = 2012-08-25

| doi =

| accessdate = }} Archived 25 August 2012.</ref> Questa unità di misura non fa parte del [[sistema internazionale]] (S.I.), che raggruppa le unità di misura utilizzate a livello mondiale. Un miglio orario equivale a {{M| 0,447 04|| m/s}} e a {{M| 1,609 344||km/h}}. Un metro al secondo (m/s) corrisponde a {{M| 2,236 94|| mph}}.

| accessdate = }} Archived 25 August 2012.</ref>

Questa unità di misura non fa parte del [[sistema internazionale]] (S.I.), che raggruppa le unità di misura utilizzate a livello mondiale.

Un miglio orario equivale a {{M| 0,447 04|| m/s}} e a {{M| 1,609 344||km/h}}.

Un metro al secondo (m/s) corrisponde a {{M| 2,236 94|| mph}}.

Per passare dalle mph ai [[Chilometro orario|km/h]] basta moltiplicare il valore per il coefficiente 1,61, mentre per passare dai km/h alle mph bisogna moltiplicare il valore per 0,62 (con arrotondamento per eccesso).