The International Meter Convention was completed in 1875 and has since been recognized by almost all states in the world. On the metric system all today internationally valid measures and weights are based. On October 20, 1983, one meter was defined by the International Commission on Weights and Measures as follows: The meter is the length of the route that travels the light in a vacuum in the time interval of 1/299792458 of a second. Thus, after several versions finally a comparison measure was found, which can be regarded as temporally immutable. Mostly for traditional or aesthetic reasons, there were or are opposition to the introduction, particularly in the US, Britain, Canada (except Quebec) and Japan. Relics of old systems can be found in many countries, eg. In the form of redefined ("metrified") units (eg pounds to 500 g) and partly by the influence of the US economy (inches, such as screen sizes).
One liter of water weighs exactly one kilogram (kg) and has a volume of 1 dm³ at a temperature of 3.98 ° C and an air pressure of 1013.25 hPa (hectopascal). The Anglo-American measurement systems originated in older English systems and were also used in other Commonwealth states and colonies before the introduction of the metric system. The "Imperial System" was introduced in 1824. Today, they are used as "customary units" almost only in the US and partly in England. The old Roman cavities are under congius contain. For lists of measures related to wine, see the keywords drum types. space measurements. bottles. capacity measures. units and wine vessels,