Instruments · Coldlight

Est. 1911 · 51.92°N 4.48°E

Catalogue index, 04 instruments

Four instruments in current production, cut between 1931 and 1999. Each measures one property of light: figure, permanence, coherence, turbulence.

01M-VIIIMeridian InterferometerSplits a beam, recombines it, and reads the difference.1974

02PC-IVArchive Plate CameraRecords to glass because glass does not move.1931

03CA-2Coherence AnalyserMeasures how far a beam travels before it forgets itself.1999

04AM-7Atmospheric MonitorWatches the air distort a star and writes down by how much.1996

Specimen viewer

M-VIII

Meridian Interferometer

1974