Bubble Chamber
"Not a Moon Lander, but a particle detector.
The 26-ton Big European Bubble Chamber (BEBC), filled with 30 cubic metres of liquefied gas, recorded the interactions of elementary particles. The sensitivity of the liquid gas was controlled by a huge piston. Each time the piston expanded, a burst of particles was photographed. Operational from 1973 to 1984, BEBC produced 3000 kilometres of film."
The piston can be seen in the previous picture near BEBC.
Bubble Chamber
"Not a Moon Lander, but a particle detector.
The 26-ton Big European Bubble Chamber (BEBC), filled with 30 cubic metres of liquefied gas, recorded the interactions of elementary particles. The sensitivity of the liquid gas was controlled by a huge piston. Each time the piston expanded, a burst of particles was photographed. Operational from 1973 to 1984, BEBC produced 3000 kilometres of film."
The piston can be seen in the previous picture near BEBC.