Rural basilicas are the most important evidence of Christianization countryside on island Mallorca (Balearic Islands, Spain). Recent investigations rural landscape transformations suggest that some churches were built along communication routes and linked to preexisting settlements. To obtain new data could support this hypothesis, a geophysical survey has been carried out at early Christian co...

Microfluxgate sensor with flat coil and double-sided symmetrical core has significantly improved parameters over the original asymmetric single-sided core design. The magnetic circuit of the new sensor is more closed and so the core is deeper saturated. The sensor hysteresis was decreased from 30 μT to 2.5 μT (for full range). Noise level was decreased from 242 nT to 27 nT rms (0.1 mHz to 10 Hz...

A Laurie… e a tutta la mia famiglia…

Spacetime curvature induces tidal forces on the wave function of a single quantum system. Using a dual light-pulse atom interferometer, we measure a phase shift associated with such tidal forces. The macroscopic spatial superposition state in each interferometer (extending over 16 cm) acts as a nonlocal probe of the spacetime manifold. Additionally, we utilize the dual atom interferometer as a ...

The voltage biased SQUID Bootstrap Circuit (SBC) was recently demonstrated for direct readout of SQUID signals. The SBC combines currentand voltage-feedbacks in one circuit to suppress the preamplifier noise. It offers not only a good noise performance, but also wide tolerance of SQUID parameters. Using SBC gradiometer, the bio-magnetic signals were successfully measured. In this paper, we over...