An experiment to test NEWTON in the laboratory at very small acceleration

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An experiment to test NEWTON in the laboratory at very small acceleration with W. Bartel, A. Glazov, B. Löhr, E. Lohrmann C. Niebuhr, S. Schubert, E. Wünsch DESY and H. Meyer ; Univ. Wuppertal

description

An experiment to test NEWTON in the laboratory at very small acceleration with W. Bartel, A. Glazov, B. Löhr, E. Lohrmann C. Niebuhr, S. Schubert, E. Wünsch DESY and H. Meyer ; Univ. Wuppertal. Measurement Procedure. - PowerPoint PPT Presentation

Transcript of An experiment to test NEWTON in the laboratory at very small acceleration

Page 1: An experiment to test NEWTON          in the laboratory    at very small acceleration

An experiment to test NEWTON

in the laboratory

at very small acceleration

with

W. Bartel, A. Glazov, B. Löhr, E. Lohrmann

C. Niebuhr, S. Schubert, E. Wünsch

DESY

and H. Meyer ; Univ. Wuppertal

Page 2: An experiment to test NEWTON          in the laboratory    at very small acceleration

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Measurement Procedure

• Resonance Frequency is about 21 GHz

• Take 5 points on the resonance

• Fit for amplitude, with and mean

• Do it twice a second

• Take tilt, temperature, barometer

• Get seismic noise

• Get height of the waves in the N-Sea

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Big G?

• In 8/2010 a new determination was published by Parks and Faller

• The number is - 300 ppm off the nominal

• Value, but 10 sigma from the best value

• Sofar

• SHOULD BE CLARIFIED

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DM problem

• It is nown since long that stars in galaxies• And galaxies in clusters do not move

following Newton (DM-Problem),• Zwicky, and Rubin• Solution proposed by Milgrom proposes

changing Newtons law at small acceleration• Only one Parameter a(0) = 1.2x10e-10

m/sec(2)

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In the future

• Get a more accurate measurementof G

• Improve on errors at small masses

• (accelerations at a(0) and below)

• It may require choosing a more quiet place

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