Numeric value of constants

[dlinhart14]

Is there a simple way to obtain the numeric value of constants, or combination of constants?

I need to multiply the equation by the factor of e/m_e and I need the result to be a simpe float without units. Only way I come with is by dividing by the units of that expression e/m_e/1u"C*kg^-1" which give me the required factor 1.7588e11 but to get it I need to know the units of the factor which makes the procedure kind of uselles.

[giordano]

Is there a simple way to obtain the numeric value of constants, or combination of constants?

The numerical value of a quantity with units is not well defined, is it? You can use Unitful.ustrip instead of dividing by the unit, but you can't get around specifying the unit in which you want your number, otherwise in principle I can give you an arbitrary random number if you ask me for the "numerical value" of a constant without specifying the units.

[dlinhart14]

ustrip is exactly what I need, thank you!