Concept in Definition ABC

In the International System of Units (SI), the kilogram is the Unit basic dough.

If we were to find an equivalence to make the concept more affordable, then the kilogram is roughly equivalent to a mass of one thousand cubic centimeters of Water to one temperature of maximum density, such is the case of 4 ° C, or failing that, it is equivalent to the mass of a cylinder formed from a platinum iridium alloy, which by the way, is preserved in the International Office of Weights and Measures of the city of Paris.

The symbol through which refers to the kilogram is kg and its distinctive feature is that it is the only SI unit that is determined by a pattern object and not by its physical attributes.

It should be noted that the first definition of the kilogram dates from the times of the French Revolutionand it showed that it was the mass of a liter of distilled water at a temperature of 3.98 ° C.
As a consequence that the determination was not the most comfortable to perform accurately, especially since the density of the water is subject to pressure and the pressure units assume mass as a factor, it was decided to redefine the measurement from a mass object exact. Meanwhile, the particular standard mass is the aforementioned alloy of platinum (90%) and iridium (10%) that is in the custody of the

Likewise, the term is used with recurrence to designate the quantity of any matter or substance that weighs just one kilogram. One kilogram of potatoes, one kilogram of walnuts, one kilogram of paper, one kilogram of wood…