Arab Today, arab today time for change gmt could be history
Last Updated : GMT 02:03:10
Arab Today, arab today
Arab Today, arab today

Time for change, GMT could be history

Arab Today, arab today

Arab Today, arab today Time for change, GMT could be history

London - AFP

Leading scientists from around the world are meeting from Thursday to consider a proposal that could eventually see Greenwich Mean Time relegated to a footnote in history. For more than 120 years GMT has been the international standard for timekeeping, but it is now under threat from a new definition of time itself based not on the rotation of the Earth, but on atomic clocks. In January 2012, the International Telecommunication Union will meet in Geneva to vote on whether to adopt the new measure, despite protests from Britain. The two-day meeting of about 50 experts at a country house northwest of London, under the aegis of the prestigious Royal Society, on Thursday and Friday will look at some of the issues involved. Predictably the question has hurt national pride -- particularly when British believe their old rivals France are leading the push to change away from GMT to the new time standard. \"We understand that in Britain they have a sense of loss for GMT,\" said Elisa Felicitas Arias, director of the time department at the France-based International Bureau of Weights and Measures (BIPM), which pushed for the change. GMT is based on the passage of the sun over the zero meridian line at the Greenwich Observatory in southeast London, and became the world standard for time at a conference in Washington in the United States in 1884. France had lobbied for \"Paris Mean Time\" at the same conference. In 1972 it was replaced in name by Universal Coordinated Time (UTC) but that essentially remained the same as GMT. UTC is based on about 400 atomic clocks at laboratories around the world but then corrected with \"leap seconds\" to align itself with the Earth\'s rotational speed, which fluctates. But the tiny variations between Earth speed and atomic speed have become a problem for GPS, the global positioning systems and mobile phone networks on which the modern world relies. \"These networks need to be synchronised to the millisecond,\" Arias said. \"We are starting to have parallel definitions of time. Imagine a world where there were two or three definitions of a kilogram.\" The meeting in London will look at the implications of abolishing the leap seconds and moving fully to atomic time. That would see atomic time slowly diverge from GMT, by about one minute every 60 to 90 years, or by an hour every 600 years, and there would need to be \"leap minutes\" a couple of times a century to bring the two in line. The proposal would then formally be voted on in Geneva. The potential loss of GMT has prompted soul searching in the British press, particularly at a time when the country is itself considering switching to British Summer Time, one hour ahead of GMT, on a permanent basis. The Sunday Times said GMT had \"symbolised Britain\'s role as a Victorian superpower\" but that \"just as that role has inexorably diminished, so GMT itself could in effect disappear.\" Science minister David Willetts has opposed the plan, saying it has become more than just a scientific row. \"This is primarily a finely balanced scientific argument but I do detect undercurrents of nationalism,\" he said. \"Britain\'s position is that we should stick to real time as experienced by humans, which is based on the Earth\'s rotation, not atomic clocks. \"Without leap seconds we will lose contact with the reality of Earth\'s rotation. Eventually our midnight would happen at noon.\" China meanwhile is said to oppose the change on the grounds that its astronomers want to retain Earth-rotation based time.

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today time for change gmt could be history Arab Today, arab today time for change gmt could be history

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today time for change gmt could be history Arab Today, arab today time for change gmt could be history

 



Arab Today, arab today
Arab Today, arab today Youssra depended on colored foam

GMT 16:53 2017 Tuesday ,05 September

Youssra depended on colored foam
Arab Today, arab today Airbus CEO says won't cling to job

GMT 06:52 2017 Monday ,16 October

Airbus CEO says won't cling to job
Arab Today, arab today Etiquette expert underlines importance of gifts

GMT 17:52 2017 Sunday ,03 September

Etiquette expert underlines importance of gifts
Arab Today, arab today 'Final phase' of battle for Raqa

GMT 03:47 2017 Monday ,16 October

'Final phase' of battle for Raqa
Arab Today, arab today Iran's Facebook shuts down

GMT 23:50 2017 Monday ,16 October

Iran's Facebook shuts down
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today Sidem reveals plan to improve education

GMT 15:52 2017 Friday ,06 October

Sidem reveals plan to improve education
Arab Today, arab today British actress becomes fifth woman

GMT 18:15 2017 Monday ,16 October

British actress becomes fifth woman
Arab Today, arab today India to close colonial-era military farms

GMT 18:49 2017 Monday ,16 October

India to close colonial-era military farms
Arab Today, arab today The history of solar eclipses

GMT 05:16 2017 Sunday ,20 August

The history of solar eclipses
Arab Today, arab today Britain's Vauxhall to cut 400 jobs

GMT 10:53 2017 Sunday ,15 October

Britain's Vauxhall to cut 400 jobs
Arab Today, arab today Norway seeks 'Tesla tax' on electric cars

GMT 08:17 2017 Friday ,13 October

Norway seeks 'Tesla tax' on electric cars
Arab Today, arab today Safaa Sultan happy for “Love School”

GMT 10:55 2017 Thursday ,12 October

Safaa Sultan happy for “Love School”
Arab Today, arab today Conservation cutbacks put Brazil's

GMT 12:02 2017 Saturday ,14 October

Conservation cutbacks put Brazil's

GMT 10:19 2017 Wednesday ,11 October

Bosy reveals behind her participation in festival

GMT 10:37 2017 Thursday ,12 October

Cara Delevingne accuses Weinstein

GMT 16:53 2017 Saturday ,02 September

Mai importance of gifts during Eid Al-Adha

GMT 10:20 2017 Thursday ,12 October

Chad extends key conservation area

GMT 10:46 2017 Saturday ,05 August

Nanis reveals simple ideas for home renovation

GMT 12:25 2017 Saturday ,14 October

Squeeze on UK health gives advanced

GMT 07:16 2017 Friday ,13 October

Lufthansa to swallow lion's share

GMT 17:12 2017 Monday ,07 August

Al-Shawaifi reveals secrets of total solar eclipse

GMT 03:59 2017 Sunday ,15 October

US mobile carriers Sprint, T-Mobile to merge

GMT 11:37 2017 Saturday ,12 August

Fashion designer reveals her new collection
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday