Fig. 2: The causal chambers.
From: Causal chambers as a real-world physical testbed for AI methodology
a, The wind tunnel. b, The light tunnel with the front panel removed to show its inner components. c,d, Diagrams of the chambers and their main components, including the amplification circuit that drives the speaker of the wind tunnel and the variables for the light tunnel camera. The variables measured by the chambers are also displayed. The sensor measurements are denoted by a tilde ‘~’. Manipulable variables, namely, actuators and sensor parameters, are shown in bold symbols (shown as non-bold text elsewhere in the text). A detailed description of each variable is given in Supplementary Section II.
