ATTENZIONE!!! IL SISTEMA E' UTILIZZABILE ESCLUSIVAMENTE IN MODALITA' "CONSULTAZIONE". CAUSA PROBLEMI TECNICI, SI PREGA DI NON EFFETTUARE L'AUTENTICAZIONE, FINO A NUOVA COMUNICAZIONE. GRAZIE
 

Stroboscopic torsion pendulum

Journal
Date Issued
2020
Author(s)
Bassan, Massimo
•
Di Fiore, Luciano
•
•
Minenkov, Yury
•
Reali, Enzo
•
Pucacco, Giuseppe
DOI
Abstract
We report on a simple, inexpensive readout for torsion pendulums, suitable for robust applications like teaching-lab equipment or monitoring of large amplitude oscillations. A short light pulse is recorded every time a reflective band on the pendulum inertial member passes in front of the sensor, an infrared LED pair (emitter-receiver). Simple algebraic manipulations on the time series of these pulses arrival times allow one to extract the resonant frequency as well as the decay time of the pendulum. This readout is insensitive to the amplitude of oscillation and is therefore suitable for monitoring torsional oscillations of large amplitude, where traditonal readouts like optical levers or autocollimators encounter dynamic range limitations.
Volume
41
Issue
1
Start page
015801
Uri
Url
Issn Identifier
0143-0807
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

Bassan_2020_Eur._J._Phys._41_015801.pdf

Description
[Administrators only]
Size

1.49 MB

Format

Adobe PDF

Checksum (MD5)

fb1a546eec41ae9d3172648d4e824184

Loading...
Thumbnail Image
Name

strobo_rev.pdf

Description
preprint
Size

8.9 MB

Format

Adobe PDF

Checksum (MD5)

82f2e3b9b95162d028959468500f0bda