In atomic units (for short - and. e. m) express the mass of the smallest of the known natural objects - elementary particles, atoms and molecules. The numerical value of this size many times changed from the moment of the first formulation of its physical sense Englishman John Dalton in 1803, and its last specification was made in 2010. This unit is not a part of the system of SI therefore it sometimes happens it is necessary to convert atomic units into kilograms.
Instruction
1. For the most close translation and. e. the m in kilograms should use the coefficient 1.660538921(73) increased by 10 in-27 degrees. Such share from one kilogram corresponds to one atomic unit of mass according to the last specification of the international Committee on data for science and technology (CODATA). However this number is irrational, that is has no exact value - from the coefficient given above it is possible to see that it is decimal fraction in which the value 73 infinitely repeats. If translation and. e. m in kilograms - a part of a theoretical task, of course, it is necessary to provide this value in its decision, but it is impossible to use it in practical calculations.
2. Round coefficient from the first step to satisfying the set degree of accuracy of number of signs after a comma, and then increase the received value by the set number of atomic units of mass. To the received size add multiplication by 10 ⁻² ⁷ or transfer a decimal comma to 27 positions to the left - it is and there will be an equivalent of the set quantity and. e. m in kilograms.
3. It is quite difficult to make operation of multiplication from the previous step in mind therefore it is necessary to use the calculator. It can be also the application which in the Windows operating system which is most widely used today can be started from the main menu. For this purpose click the Start-up button, and then the inscription "All Programs". You will find the reference "Calculator" in the section "Standard".
4. It is possible to do also without calculator if there is an Internet access. Pass to the website of the Google search engine and instead of inquiry gather the necessary mathematical operation. For example, to learn weight in kilograms of 371 units of atomic mass enter 371*1.660538921*10^ (-27). The search engine will calculate result and will display on the page: 371 * 1.660538921 * (10^(-27)) = 6.1605994 × 10 ⁻² ⁵.