Zobrazeno 1 - 10
of 65
pro vyhledávání: '"G. Bönsch"'
Autor:
G Bönsch, R A Nicolaus
Publikováno v:
Metrologia. 42:24-31
For an absolute measurement of a density standard, mass and volume are measured separately. The absolute determination of the volume is still the quantity limiting the uncertainty. Lowest uncertainties are achieved by interferometric measurements of
Publikováno v:
tm - Technisches Messen. 67:328-333
Es wird ein Interferometer mit Phasenverschiebungseinrichtung zur dimensionellen Messung von quaderförmigen Körpern beschrieben. Der verwendete spezielle Fizeau-Algorithmus erfordert eine Schrittweite von exakt ¼ Interferenzordnung, die durch Piez
Publikováno v:
Metrologia. 35:105-113
The vacuum wavelengths of hyperfine components of three different rovibronic transitions of the B 0u+ - X 1Eg+ spectrum of molecular 127I2 in the near-infrared were determined with a relative standard uncertainty of δλ/λ = 1.3 × 10-10. The measur
Autor:
G Bönsch, E Potulski
Publikováno v:
Metrologia. 35:133-139
An air refractometer has been developed for accurate measurements of the refractive index of gases under well-defined conditions. Measurements have been performed for dry and moist air at four wavelengths distributed over the visible part of the spec
Publikováno v:
Zeitschrift f�r Physik A Hadrons and Nuclei. 348:147-150
The transition frequencies of thei-component of the R(99)15-1 and thew-component of the R(85)26-0 transition in the B-X system of molecular127I2 have been determined with an overall relative standard uncertainty of 1.3 · 10−10. For this purpose a
Publikováno v:
teme. 68:550
Ein Temperaturmesssystem wird beschrieben, mit dem Unsicherheiten
Autor:
G Bönsch
Publikováno v:
Metrologia. 19:93-96
The wavelengths of an Ar+ laser and of a He-Ne laser at 515 nm and 612 nm, respectively, have been compared with the wavelength of a He-Ne laser at 633 nm. All the lasers involved were stabilized by using saturated absorption in iodine-127. The wavel
Autor:
K Dorenwendt, G Bönsch
Publikováno v:
Metrologia. 12:57-60
In interferometry ideal plane or spherical waves are supposed to propagate between the reflecting surfaces. Diffraction effects however, due to the finite diameter of the beams, cause distortions of the wavefronts, changing fringe position and contra
Publikováno v:
Zeitschrift für Physik A Hadrons and nuclei. 222:363-371
Thin films of anthracene were produced by evaporation on substrates cooled by liquid air. Fluorescence spectra and X-ray diffraction diagrams indicate a new crystalline phase of anthracene. With increasing temperature this modification shows an irrev
Autor:
A. Flammersfeld, G. Bönsch
Publikováno v:
Zeitschrift für Physik A Hadrons and nuclei. 236:305-313
The scintillation light yield of anthracene atT=300 °K andT=80 °K and of naphthalene andp-terphenyl atT=80 °K was investigated for impact directions in the (a, c)-plane. The light yield was measured for welldefined integration times. The relative