Article 1
Open ↗Directive 80/181/EEC is hereby amended as follows: 1. In Article 3(2), "31 December 1999" shall be replaced by "31 December 2009". 2. The following Article shall be added: "Article 6a Issues concerning the implementation of this Directive and, in particular, the matter of supplementary indications shall be further examined, and if necessary the appropriate measures adopted in accordance with the procedure referred to in Article 18 of Council Directive 71/316/EEC(6)." 3. The Annex shall be amended as follows: (a) In Chapter I, the text under the table in point 1.1.1 shall be replaced by the following: "Celsius temperature t is defined as the difference t = T - T0 between the two thermodynamic temperatures T and T0 where T0 = 273,15 K. An interval or difference of temperature may be expressed either in kelvins or in degrees Celsius. The unit 'degree Celsius' is equal to the unit 'kelvin'." (b) The definitions of the SI supplementary units following the table in point 1.2.1 shall be replaced by the following: "Unit of plane angle The radian is the angle between two radii of a circle which cut off on the circumference an arc equal in length to the radius. (International standard ISO 31 - 1: 1992) Unit of solid angle The steradian is the solid angle of a cone which, having its vertex in the centre of a sphere, cuts off on the surface of the sphere an area equal to that of a square with sides of length equal to the radius of the sphere. (International standard ISO 31 - 1: 1992)." (c) The table in point 1.3 shall be replaced by the following: ">TABLE>" (d) Point 3 shall be replaced by the following: "3. UNITS USED WITH THE SI, WHOSE VALUES IN SI ARE OBTAINED EXPERIMENTALLY >TABLE> Note: The prefixes and their symbols listed in 1.3 may be used in conjunction with these two units and with their symbols."