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Question: Evaluation of 'combined' constants

Question:Evaluation of 'combined' constants

wyttenbach 10 Maple 2018
constant scientificconstants
January 02 2019
2

Might be a beginners trap...

How can I evaluate a constant expression or an expression/formula that contains several scientific constants without "Constantin'g' them out like in sample 2)??

1) Example:

Rb := (1/4)*alpha/(Pi*R[infinity])

'real' value of (Rb)??

1) This example works:

evalf(1-Constant(m[e])/Constant(m[p])) -- but it's awful with respect to the simple demand to just divide two known constants..
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