The path to MeMa
Everyone knows that we are witnessing an unstoppable general progress and modernization. Time is rushing forward faster than we ever are able to perceive. Everything old is replaced by new, or at least is modernized. According to a recent online survey, our old International System of Units (SI) will meet a similar modernization fate.
Before we talk about the upcoming change within SI, let us briefly revise what the International System of Units is. SI or metric system lays down rules for prefixes, supplementary and derived units and determines a single system to define the units. Today, the system is built on seven base units which are regarded as dimensionally independent: kilogram (kg), meter (m), second (s), ampere (A), Kelvin (K), candela (cd), and mole (mol). In addition to the basic units there are also derived units; and for the sake of completeness, the system of derived units was formed by the combination of base units according to algebraic rules.
One of the best known and most frequently used units in the practical world is the meter, a unit of length.
To define the meter, it took scientists a few hundred years during which several definitions were presented. To give an example there is one of the easier-to-remember definitions: 'the meter is a length equal to 1 650 763.73 wavelength of the radiation emitted in vacuum corresponding to the transition between the levels 2p10 and 5d2 of the krypton-86 atom'. Ahem, interesting. In the difficult process of defining one meter smart scientists had finally agreed that the unit of length will be defined by speed. So the light speed in vacuum was assigned a constant value of 299,792,458 m/s and the most easily understandable definition of the meter was born. By setting the speed of light as an exact numerical value was also the meter defined as a unit of length: 'The meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second'.
Although the path to the current lexical and physical form of the meter was really long and the subsequent joy of the defined measurement unit huge, we must not be stopped. On the contrary, let us just run ahead in the modern, constantly changing times. Who today cares about cumbersome length measurement using the time unit and how far light travels in vacuum during a time interval of 1/299 792 458 of a second? The area of measurement is still alive and offers a great space for implementation of new ideas and necessary changes. Now we are finally getting to the topic of SI change.
The measurement revolution finally paid off in the form of practical MeMa application.
Thanks MeMa we will not measure just what we need. MeMa can transform seemingly boring activity, such as measurement, to an activity in which you can have fun and meet new people.
The result of measurement using this application is shown in the MeMa unit that will most likely soon replace the old-fashioned meter. A physical unit could always have been defined in any way. Important is to make the definition practical and rational in order to become generally accepted in professional circles. Since MeMa fulfils first two conditions and the third one is only a matter of time, nothing prevents it to become a widely used and accepted modern unit of measurement.