This paper outlines novel techniques for producing qualitative visualisations of density ̄uctuations and for obtaining quantitative whole-®eld density measurements in two-dimensional density-strati®ed ̄ows. These techniques, which utilise image processing technology, are much simpler to set up than the classical schlieren and interferometry methods, and provide useful information in situations ...

The paper i l l u s t r a t e s the most recent techniques i n the f i e l d o f l a rge-sca le magnetic measurements. The main problems r e l a t e d t o f i e l d mapping a re discussed. The development o f microelect ron ics dur ing the l a s t few years has created a r e v o l u t i o n i n magnetic measurement systems. Modular hardware and software as we l l as widely used i n d u s t r i ...

We continue our investigations of cavity QED with time dependent parameters. In this paper we discuss the situation where the state of the atoms leaving the cavity is reduced but the outcome is not recorded. In this case our knowledge is limited to an ensemble description of the results only. By applying the Demkov-Kunike level-crossing model, we show that even in this case, the filtering actio...

Visual fields were measured in 4 binocularly deprived cats and 2 controls. The animals were tested monocularly in the area between 60 degrees contralateral to the open eye and 105 degrees ipsilateral. No difference was found between visually deprived and control cats in response to stimuli presented in the binocular segment of the visual field from 30 degrees contra laterally to 30 degrees ipsi...

By generalizing the quantum weak measurement protocol to the case of quantum fields, we show that weak measurements probe an effective classical background field that describes the average field configuration in the spacetime region between pre- and postselection boundary conditions. The classical field is itself a weak value of the corresponding quantum field operator and satisfies equations o...

Faraday probe measurements were taken in the near-field plume of a 6-kW Hall thruster to reduce the negative effects of facility-induced charge-exchange collisions. The results from these measurements were analyzed using a non-standard definition of the current density integration bounds that produced self-consistent beam current and beam divergence values. The measurements indicated a beam div...

Ocean waves have multidirectional components. Most wave measurements are taken at a single point, and so fail to capture information about the relative directions of the wave components directly. Conventional means of directional estimation require a minimum of three concurrent time series of measurements at different spatial locations in order to derive information on local directional wave sp...

The novel heterometallic aggregates [Ag(8)Cu(2)(C(2)C(6)H(4)X)(6)(PPh(2)C(6)H(4)PPh(2))(6)][PF(6)](4) (X = H, 1; OMe, 2; NMe(2), 3) were prepared by the self-assembly reactions starting from simple precursors. These compounds consist of the central [Ag(6)Cu(2)(C(2)C(6)H(4)X)(6)](2+) clusters capped by two tripodal fragments [Ag(diphosphine)(3)](+). The solid state structures of complexes 1 and ...

SQUID systems, using either high temperature or low temperature superconductors, were developed for sensitive measurements in magnetically disturbed environments. They include the SQUIDs and fast SQUID electronics. Magnetometer SQUID systems are used for geophysical sounding, where they show superiority when compared to conventional induction coils for very deep sounding or fast measurement. Hi...