A. Schumacher

Publications (2)1.49 Total impact

• Article: Absolute measurement of the Newtonian force and a determination of G

  U Kleinevoß, H Meyer, A Schumacher, S Hartmann
  [show abstract] [hide abstract]
  ABSTRACT: We present the status and preliminary results of the Wuppertal gravitational experiment which is based on a microwave resonator. The gravitational force of two test masses acting on the resonator is measured as a function of distance. From new data taken recently we determine the gravitational constant G and test Newton's inverse square law in a distance range between 0.7 m and 2.2 m. From our measurements we obtain a preliminary value for G = 6.6735 × 10-11 m3 kg-1 s-2 with an uncertainty of 432 ppm dominated by systematic considerations.
  Measurement Science and Technology 12/1998; 10(6):492. · 1.49 Impact Factor
• Conference Proceeding: Determination of the gravitational constant G using a Fabry-Perot pendulum resonator

  A. Schumacher, U. Kleinevoss, H. Schutt, H. Walesch, H. Meyer
  [show abstract] [hide abstract]
  ABSTRACT: The gravitational constant G is the least well known fundamental constant. Our unique method of measuring G is described, followed by a report on discovered systematic errors and thereupon realized upgrades to significantly reduce those errors. We will present the first results obtained after the upgrade
  Precision Electromagnetic Measurements Digest, 1998 Conference on; 08/1998