A une seconde prèsPourquoi Google vient de créer sa propre unité de temps
Une seconde intercalaire sera ajoutée au 31 décembre pour se caler sur la rotation irrégulière de la Terre. Un véritable casse-tête pour les ordinateurs.
26 décembre 2016'%3e%3cpath%20d='M5.33809%207.48826C5.43809%207.53825%205.80682%207.732%206.44429%208.06948C7.08802%208.41322%207.77705%208.78351%208.51139%209.18037C9.24574%209.57723%209.91915%209.94128%2010.5316%2010.2725C11.1503%2010.6038%2011.4847%2010.7881%2011.5347%2010.8256C11.6347%2010.8881%2011.7503%2010.9256%2011.8816%2010.9381C12.0128%2010.9506%2012.1472%2010.9569%2012.2847%2010.9569C12.4159%2010.9569%2012.5472%2010.9428%2012.6784%2010.9147C12.8097%2010.8866%2012.9253%2010.8569%2013.0253%2010.8256C13.0815%2010.7881%2013.4159%2010.6038%2014.0283%2010.2725C14.6408%209.94128%2015.3158%209.57723%2016.0533%209.18037C16.7907%208.78351%2017.4782%208.41322%2018.1157%208.06948C18.7532%207.732%2019.1219%207.53825%2019.2219%207.48826C19.4281%207.38201%2019.5859%207.20702%2019.6953%206.96328C19.8047%206.71954%2019.6719%206.59767%2019.2969%206.59767H5.33809C4.96311%206.59767%204.8178%206.71954%204.90217%206.96328C4.98654%207.20702%205.13185%207.38201%205.33809%207.48826ZM19.4281%209.11944C19.3094%209.18819%2018.925%209.39443%2018.275%209.73816C17.6251%2010.0819%2016.9267%2010.4491%2016.1798%2010.8397C15.433%2011.2303%2014.7408%2011.5881%2014.1033%2011.9131C13.4721%2012.2381%2013.1128%2012.4193%2013.0253%2012.4568C12.894%2012.5255%2012.7706%2012.5646%2012.655%2012.574C12.5393%2012.5834%2012.4159%2012.588%2012.2847%2012.588C12.1472%2012.588%2012.0222%2012.5834%2011.9097%2012.574C11.7972%2012.5646%2011.6722%2012.5255%2011.5347%2012.4568C11.466%2012.4193%2011.116%2012.2381%2010.4847%2011.9131C9.85353%2011.5881%209.16449%2011.2303%208.41765%2010.8397C7.6708%2010.4491%206.9724%2010.0819%206.32242%209.73816C5.6787%209.39443%205.30372%209.18819%205.19747%209.11944C5.02873%209.05069%204.93029%209.05069%204.90217%209.11944C4.87405%209.18819%204.85999%209.25693%204.85999%209.32568C4.85999%209.35693%204.85999%209.69129%204.85999%2010.3288C4.85999%2010.9662%204.85999%2011.6584%204.85999%2012.4052C4.85999%2013.1521%204.85999%2013.8349%204.85999%2014.4536C4.85999%2015.0723%204.85999%2015.3817%204.85999%2015.3817C4.85999%2015.5504%204.95373%2015.7285%205.14122%2015.916C5.32872%2016.1035%205.50683%2016.1973%205.67558%2016.1973H18.8844C19.0531%2016.1973%2019.2313%2016.1035%2019.4187%2015.916C19.6062%2015.7285%2019.7%2015.5504%2019.7%2015.3817C19.7%2015.3817%2019.7%2015.0723%2019.7%2014.4536C19.7%2013.8349%2019.7%2013.1521%2019.7%2012.4052C19.7%2011.6584%2019.7%2010.9662%2019.7%2010.3288C19.7%209.69129%2019.7%209.35693%2019.7%209.32568C19.7%209.25693%2019.689%209.18819%2019.6672%209.11944C19.6453%209.05069%2019.5656%209.05069%2019.4281%209.11944Z'%20fill='%23C0C0C0'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_195_5213'%3e%3crect%20width='14.84'%20height='10'%20fill='white'%20transform='matrix(1%200%200%20-1%204.85999%2016.2002)'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e){kind=small}
'%3e%3cpath%20d='M17.8486%206.15625H12.8799C12.6299%206.15625%2012.3643%206.31771%2012.083%206.64062C11.8018%206.96354%2011.6611%207.38542%2011.6611%207.90625V11.625H17.8486V16.9375H11.6611V32.6562H5.62988V16.9375H0.161133V11.625H5.62988V8.625C5.62988%207.52083%205.81738%206.47917%206.19238%205.5C6.54655%204.54167%207.04134%203.70312%207.67676%202.98438C8.31217%202.26562%209.0778%201.69792%209.97363%201.28125C10.8486%200.864584%2011.8174%200.65625%2012.8799%200.65625H17.8486V6.15625Z'%20fill='%23324A80'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_195_10209'%3e%3crect%20width='17.69'%20height='32'%20fill='white'%20transform='matrix(1%200%200%20-1%200.159912%2032)'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e){kind=small}
'%3e%3cpath%20d='M12.4047%208.96665L19.8513%200.49707H18.0873L11.6187%207.84959L6.456%200.49707H0.5L8.30867%2011.6164L0.5%2020.497H2.264L9.09067%2012.7308L14.544%2020.497H20.5M2.90067%201.79865H5.61067L18.086%2019.2594H15.3753'%20fill='%23000'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_341_1924'%3e%3crect%20width='20'%20height='20'%20fill='%23000'%20transform='translate(0.5%200.49707)'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e){kind=small}
'%3e%3cpath%20d='M8.125%204.125C8.125%205.10417%207.78646%205.92708%207.10938%206.59375C6.43229%207.26042%205.55208%207.59375%204.46875%207.59375C3.38542%207.59375%202.5%207.26042%201.8125%206.59375C1.125%205.92708%200.78125%205.10417%200.78125%204.125C0.78125%203.14583%201.125%202.32292%201.8125%201.65625C2.5%200.989584%203.38542%200.65625%204.46875%200.65625C5.55208%200.65625%206.43229%200.989584%207.10938%201.65625C7.78646%202.32292%208.125%203.14583%208.125%204.125ZM1%2032.6562V10.4062H7.90625V32.6562H1ZM12.0312%2017.3125C12.0312%2015.9167%2012.0208%2014.6198%2012%2013.4219C11.9792%2012.224%2011.9167%2011.1458%2011.8125%2010.1875H17.875L18.0938%2013.4375H18.2812C18.7188%2012.6667%2019.526%2011.8594%2020.7031%2011.0156C21.8802%2010.1719%2023.3854%209.75%2025.2188%209.75C26.3438%209.75%2027.3958%209.9375%2028.375%2010.3125C29.3542%2010.7083%2030.2031%2011.2969%2030.9219%2012.0781C31.6406%2012.8594%2032.1979%2013.8438%2032.5938%2015.0312C33.0104%2016.2396%2033.2188%2017.6458%2033.2188%2019.25V32.4375H26.2812V20.3438C26.2812%2018.9271%2026.0052%2017.7812%2025.4531%2016.9062C24.901%2016.0312%2024.0312%2015.5938%2022.8438%2015.5938C21.8646%2015.4896%2021.0573%2015.6979%2020.4219%2016.2188C19.7865%2016.7396%2019.3646%2017.3229%2019.1562%2017.9688C19.0521%2018.1771%2018.9896%2018.4375%2018.9688%2018.75C18.9479%2019.0625%2018.9375%2019.375%2018.9375%2019.6875V32.4375H12.0312V17.3125Z'%20fill='%230077B5'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_195_10215'%3e%3crect%20width='32.44'%20height='32'%20fill='white'%20transform='matrix(1%200%200%20-1%200.780029%2032)'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e){kind=small}
Le Réseau Atlantico
BEST OF
Best-Of du 30 août au 5 septembre
Contenus en rapport avec le mot-clé temps universel
Esprit de contradictionLa Bolivie invente les horloges à tourner en sens inverse pour se libérer de l’impérialisme occidental
La Bolivie s’invente une "heure du Sud" qui inverse la course des aiguilles sur les horloges du pays. Une transgression symbolique pour tenter d’échapper aux rythmes "civilisés" du temps.
6 juillet 2014
C'est le temps qui courtLes Etats-Unis mettent au point l'horloge la plus précise du monde
Elle est censée varier de moins d'une seconde en 13,8 milliards d'années.
23 août 2013
Grasse matinée ?Le week-end durera une seconde de plus
La faute à la vitesse de rotation de la Terre, qui décroît.
28 juin 2012
Cadeau bonusLa minute qui
durera 61 secondes
La dernière minute du 30 juin 2012 sera un peu plus longue que les autres, afin d'éviter de retrouver midi à 14h dans cent ans.
6 janvier 201205