Abstract: A method is shown of applying in accordance with a pattern thin layers of an oxidic superconductive material onto a substrate in which a copper oxidic based material that after heating is rendered superconducting at a desired service temperature is covered in a desired pattern with a composition that renders the underlying oxidic material non-superconducting.

Abstract: Method of applying in accordance with a pattern thin layers of oxidic superconductive material onto a substrate, it not being necessary to subject the superconductive material to mechanical or chemical treatments. At its surface the substrate is provided in accordance with a desired pattern with two different material compositions. The first composition is chosen such that the oxidic material applied thereon is superconductive at a desired surface temperature. The second composition is chosen such that the oxidic material applied thereon is not superconductive.

Abstract: A three-dimensional television picture display system in which information intended for the right and left eye, respectively, of an observer is generated on a display screen (11, 20) in respective first and second images (V1, V2) which are shifted into the direction of line scan. In order to prevent eye strain due to conflicting depth information and any resultant headache, irritation and discomfort, the periodic line blanking of the second image (V2) intended for the left eye is shifted into the direction of line scan at picture generation on the display screen (11, 20) relative to the periodic line blanking of the first image (V1) intended for the right eye. The three-dimensionally shifted line blanking can be realized either electronically (6, 7; 22) or by providing on either side of the display screen (20) of the picture display device (19) strips (HB1, HB2) which transmit/do not transmit information.