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--- basic_notions:units [2018/03/27 13:20]
jakobadmin created
+++ basic_notions:units [2018/04/06 15:37] (current)
jakobadmin [Concrete]
@@ Line 18: / Line 18: @@
   * A great discussion can be found in Section 2.1 in Klauber's "Student-friendly Quantum Field Theory".
   * See also [[https://arxiv.org/pdf/1506.01951.pdf|BABEL OF UNITS]] by Neal J. Carron
+----
+Any physical quantity can be expressed by using as fundamental
+unit either energy, mass, length or time.
+\begin{align}
+ct&\approx \ell\Longrightarrow {\rm time}\approx{\rm length},\\
+E&\approx mc^2\Longrightarrow {\rm energy}\approx{\rm mass},\\
+E&\approx pv\Longrightarrow {\rm energy}\approx{\rm momentum},\\
+Et&\approx \hbar\Longrightarrow {\rm energy}\approx{\rm (time)^{-1}}\approx
+{\rm (length)^{-1}}.
+\end{align}
 <tabbox Abstract>