Rosetta Stone a permanent return. In December 2009, he proposed to drop his claim for the permanent return of the Rosetta Stone if the British Museum lent the stone to Egypt for three months for the opening of the Grand Egyptian Museum at Giza in 2013. These requests were refused. As John Ray has observed, "the day may come when the stone has spent longer in the British Museum than it ever did in Rosetta." There is strong opposition among national museums to the repatriation of objects of international cultural significance such as the Rosetta Stone. In response to repeated Greek requests
Rosetta Stone on spectroscopy wrote that "the spectrum of the hydrogen atoms has proved to be the Rosetta stone of modern physics: once this pattern of lines had been deciphered much else could also be understood". Fully understanding the key set of genes to the human leucocyte antigen has been described as "the Rosetta Stone of immunology". The flowering plant "Arabidopsis thaliana" has been called the "Rosetta Stone of flowering time". A Gamma ray burst (GRB) found in conjunction with a supernova has been called a Rosetta Stone for understanding the origin of GRBs. The technique of Doppler echocardiography has been called