Vacuum chamber and aluminum sphere
Courtesy of Holger Müller

Vacuum chamber and aluminum sphere

The researchers constructed a vacuum chamber, roughly the size of a soccer ball, in which the pressure was one-trillionth that of the atmosphere we normally breathe. An aluminum sphere roughly the size of a marble (center), functioned as a dense object to suppress the chameleon fields and allow the researchers to measure small forces. 


Download Photo (138.2 kB)