Abstract: A road surface rendering device for rendering a road surface by illuminating an illumination region extending along a direction away from the road surface rendering device with light. The illumination region is divided into three regions of a left region, a central region, and a right region in a direction intersecting a longitudinal direction, an illuminance of the central region is largest.

Abstract: Under a magnetic field gradient, solid particles floating and/or sinking in a supporting liquid (most suitably a paramagnetic one) are levitated or anti-levitated at different locations depending on their densities and diamagnetic susceptibilities.

Abstract: An oxide superconductor consisting of an oxide which comprises, as constituent metal elements, bismuth, lead, strontium, calcium and copper having a molar ratio of lead to bismuth of at least 0.2:1, and having an internal structure in which domains having a relatively high concentration of lead and no long-period structure are contained in domains having a relatively low concentration of lead and a long-period structure. This oxide superconductor has a storing pinning function and a high critical current density Jc even at a high temperature and a high magnetic field, can be produced by industrial methods, and is easily processed to form wires.

Abstract: Under a magnetic field gradient, solid plastic particles floating and/or sinking in a suspending liquid (most suitably a paramagnetic one) are levitated or anti-levitated at different locations depending on their densities and diamagnetic susceptibilities.

Abstract: An oxide superconductor consisting of an oxide which comprises, as constituent metal elements, bismuth, lead, strontium, calcium and copper having a molar ratio of lead to bismuth of at least 0.2:1, and having an internal structure in which domains having a relatively high concentration of lead and no long-period structure are contained in domains having a relatively low concentration of lead and a long-period structure. This oxide superconductor has a storing pinning function and a high critical current density Jc even at a high temperature and a high magnetic field, can be produced by industrial methods, and is easily processed to form wires.

Abstract: The interface between two nonmagnetic fluids, typically liquid layers, in contact with each other is changed by applying a magnetic field thereto. The interface is raised or depressed into an upward or downward convex shape.

Abstract: The disclosed superconductive material has a characteristic in accordance with which electrical resistance disappears at a temperature of at least more than the boiling point of 20.3.degree. K. (-252.7.degree. C.) of liquid hydrogen and relates to La-Ba-Cu-O series superconductive material.Said superconductive material consists essentially of a composition having the formula(La.sub.1-x M.sub.x).sub.2 CuO.sub.4-x/2wherein, M=Ba or Ba(Sr, Ca) and x=0.04.about.0.20 as a main body, wherein the material has a K.sub.2 NiF.sub.4 crystal structure.

Abstract: A bismuth system oxide superconductor comprising the 110 K phase is effectively prepared by a process comprising the steps of mixing a bismuth compound, a strontium compound, a calcium compound, a copper compound and optionally a lead compound, optionally provisionally sintering the mixture, and sintering the mixture.