Two hollow bronze hemishperes. The hemispheres are used in demonstrations of atmospheric pressure. When they are fitted together and the air is removed from the sphere, the two halves can not be pulled apart.
http://en.wikipedia.org/wiki/Magdeburg_hemispheres

This instrument was used at the laboratory of the 1st Gymnasium of Athens in Plaka.
Two hollow bronze hemishperes. The hemispheres are used in demonstrations of atmospheric pressure. When they are fitted together and the air is removed from the sphere, the two halves can not be pulled apart.
http://en.wikipedia.org/wiki/Magdeburg_hemispheres

Two hollow bronze hemishperes. The hemispheres are used in demonstrations of atmospheric pressure. When they are fitted together and the air is removed from the sphere, the two halves can not be pulled apart.
http://en.wikipedia.org/wiki/Magdeburg_hemispheres

This instrument, together with many others, was given to the University of Athens by Germany as part of World War I reparations.
Used at the laboratories of the Faculty of Physics and Mathematics.

Used at the laboratory of the First Gymansium of Nauplion, one of the first secondary schools of the Greek State.

Airpump for demonstarion of the effects of the vacuum.