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Units are standards of measurement used for different types of quantities.

1
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Planck units is almost (except coefficients like $\pi$) exactly the unit system you want, and it is frequently used in quantum field theory. According to its definition: $c = G = \hbar = k_\text{B} = 1 \ $ …
answered Jun 30 '14 by Qianyi Guo
6
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Conventionally we use $1$ for dimensionless quantities, although it may cause some confusions. In additon, The International Committee for Weights and Measures contemplated defining the unit of …
answered Feb 20 '15 by Qianyi Guo