ISO INTERNATIONAL STANDARD 80000-3 Second edition 2019-10 Quantities and units Part 3: Space and time Grandeurs et unités - Partie 3: Espace et temps Reference number IEC IS0 80000-3:2019(E) oS! @IS02019 IS0 80000-3:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting onthe internet or an intranet, without prior writtenpermission.Permission can be requested from either Iso at the address below or Iso's memberbody in the country ofthe requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +4122 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii IS02019-Allrightsreserved IS0 80000-3:2019(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references. ..1 Terms and definitions. 3 Bibliography ..10 Index .11 @ IS0 2019 - All rights reserved iii