Albert Einstein – Relativity: The Special and the General Theory, 1 dicembre 1916 “This non-rigid reference-body, which might appropriately be termed a “reference-mollusc,” is in the main equivalent to a Gaussian four-dimensional co-ordinate system chosen arbitrarily. That which gives the “mollusc” a certain comprehensibility as compared with the Gauss co-ordinate system is the (really unjustified) formal… Leggi tutto Il mollusco quantistico