495 research outputs found
Sensitivity limits of a Raman atom interferometer as a gravity gradiometer
We evaluate the sensitivity of a dual cloud atom interferometer to the
measurement of vertical gravity gradient. We study the influence of most
relevant experimental parameters on noise and long-term drifts. Results are
also applied to the case of doubly differential measurements of the
gravitational signal from local source masses. We achieve a short term
sensitivity of 3*10^(-9) g/Hz^(-1/2) to differential gravity acceleration,
limited by the quantum projection noise of the instrument. Active control of
the most critical parameters allows to reach a resolution of 5*10^(-11) g after
8000 s on the measurement of differential gravity acceleration. The long term
stability is compatible with a measurement of the gravitational constant G at
the level of 10^(-4) after an integration time of about 100 hours.Comment: 19 pages, 20 figure
La qualification de la vente à tempérament en droit belge:apport de l'outil informatique au jugement de qualification
La qualification de la vente à tempérament en droit belge:apport de l'outil informatique au jugement de qualification
From the first Christian Missionaries to the Comic Opera The Mikado : Japan\u27s Changing Image in the Eyes of Europe
最も荘厳な僧院とその他の名所 : エンゲルベルト・ケンペルの日本画
The German scholar Engelbert Kaempfer (1651-1716) came to Japan during the Genroku period as physician to the trading settlement of the Dutch East India Company at Nagasaki. During the two years of his visit he not only took a great amount of scholarly notes and produced a number of sketches but also succeeded in purchasing various small objects, books and maps, as well as a set of fifty finely painted watercolours of famous sights (meisho e). This article attempts to place these description and drawings of Chion-in and the large Buddha of Kyoto as an example, it is argued that these paintings, in line with other contemporary depictions, were when he wrote his famous work on Japan, and when on occasion he forgot that they were stylized portrayals only, he committed errors in his otherwise meticulous description
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