Plaque for Bell Telephone Labs at Westbeth

On 19 May 2011, Westbeth Artists Housing will enter the Register of Historic Physics Sites as the original location of Bell Telephone Labs where in 1927 the first direct demonstration of de Broglie’s famous theorem on elementary particles was performed. Everyone is invited to attend the ceremony organised by the American Physical Society at the main entrance at 55 Bethune Street.

The plaque reads:
At this site, the original location of Bell Telephone Laboratories, C J Davisson and L H Germer in 1927 performed the first direct demonstration of the wave-like behavior of elementary particles, predicted by L de Broglie in 1923. The Davisson-Germer experiment provided crucial empirical evidence for the validity of the then rapidly evolving theory of quantum mechanics. In those years and subsequently many important scientific and technological discoveries were made at the same laboratory.

Historic Physics Site, Register of Historic Sites
Plaque installed by American Physical Society