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Cooke and Sons astrograph
Cook and Sons astrograph
Cooke and Sons photographic camera
Thornton Pickard photographic camera
Cavignato chronograph
Fuess chronograph
Barraud marine chronometer
Two cell photometer
One cell photometer
Stellar interferometer
Sundial at Babylonian hours
Sundial at Italic hours
Micrometro
Grubb wire micrometer
Pendulum A. Kittel
Pendulum Cavignato and Mioni
Kobell pendulum
Riefler pendulum
Pendulum Riefler and Secchi
Browning prism spectroscope
Browning prism spectroscope
Instrument of the Repsold and Soehne passages
Zenithal telescope
Cooke and Sons refractor telescope
Salmoiraghi refractor telescope

Riefler pendulum

Anonymous

Displayed in:

Astronomical Observatory of Abruzzo

Astronomical Observatory of Abruzzo

Via Mentore Maggini, Teramo

Closed today: open tomorrow at 09:00

Verified profile

Pendulum clock that strikes the sidereal second (time linked to the apparent diurnal motion of the stars), with suspension and compensation according to the system devised by Riefler, in which the anchor-type escapement is free, and the impulses are given to the pendulum by means of the suspension spring. The compensation is mercury, contained inside the pendulum rod, which with its thermal expansion compensates for the elongation of the suspension rod, despite the variations in temperature. This instrument is equipped with electrical contacts for recording the seconds on the dry chronograph.
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Details

Title: Riefler pendulum

Author: Anonymous

Date: 1995

Technique:

Displayed in: Astronomical Observatory of Abruzzo

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