60 Garden Street, Cambridge, Massachusetts 02138 (March 1, 1999) About fifty years ago two important papers appeared describing novel interactions. One, by Casimir, discussed the case of two interacting walls [1] and the other, by Casimir and Polder, considered the interactions between an atom and a wall and between two atoms [2]. The history and some of the many interesting aspects of these in...

We show that Rabi oscillations of a degenerate fermionic or bosonic gas trapped in a double-well potential can be exploited for the interferometric measurement of external forces at micrometer length scales. The Rabi interferometer is less sensitive, but easier to implement, than the MachZehnder since it does not require dynamical beam-splitting/recombination processes. As an application we pro...

We report on the first measurement of a temperature dependence of the Casimir-Polder force. This measurement was obtained by positioning a nearly pure 87Rb Bose-Einstein condensate a few microns from a dielectric substrate and exciting its dipole oscillation. Changes in the collective oscillation frequency of the magnetically trapped atoms result from spatial variations in the surface-atom forc...

A-MODIS, AATSR, MERIS, POLDER-3 and SeaWiFS data are directly compared at top of the atmosphere level for nearly concomitant observation carried out under nearly identical or reciprocal geometries. Comparisons are carried out over the Salar de Uyuni in Bolivia. The results indicate that MERIS and A-MODIS are radiometrically in line. In comparison to these sensors, the SeaWiFS data exhibit a sys...

We show a simple way of deriving the Casimir Polder interaction, present some general arguments on the finiteness and sign of mutual Casimir interactions and finally we derive a simple expression for Casimir radiation from small accelerated objects. Introduction The purpose of this short paper is threefold: (a)First we show by using direct path integral techniques that the Casimir attraction[1]...

The eight months of data acquired by the POLDER instrument have now been processed. This dataset provides daily information on the global distribution of cloud top phase. We present here the results of a statistical analysis of ice and liquid phase occurrence frequencies at the global scale. Temporal variation of these frequencies above land and ocean are analyzed. These results are compared wi...

The POLDER radiometer was on board the ADEOS satellite from August 1996 to June 1997. This instrument measures radiances in eight narrow spectral bands of the visible and near infrared spectrum. Two of them are centered on the 02 A-band in order to infer cloud pressure. By assuming the atmosphere behaves as a pure absorbing medium overlying a perfect reflector, an "apparent" pressure Papp is de...

This study tries to gain an understanding of the unique spatial patterns polder areas. Starting from a typical “water-polder-village” combination elements, our begins by identifying land use in area using Sentinel-2 data and unsupervised machine learning techniques, taking Gaochun District, Nanjing (China), as example. Next, we conducted analysis change for different years multiple land-use ind...

We predict a repulsive Casimir–Polder-type dispersion interaction between single neutron and metal or dielectric surface. consider scenario where is subject to an external magnetic field. Due its intrinsic moment, the then forms magnetisable two-level system which can exchange virtual photons with nearby The resulting purely object (neutron) electric one (surface) found be repulsive, in contras...