Abstract: A device for processing spectacle lenses has a work chamber, which is accessible by way of an opening and in which a workpiece mount and at least one tool mount are opposite one another and movable relative to one another so that a processing region of a tool held at the tool mount can be brought into processing engagement with a workpiece held at the workpiece mount and in processing engagement can be guided over the workpiece. For recognition of wear at the tool, a sensor equipment with at least one contactlessly operating sensor arrangement is provided and is movable outside the work chamber between a protected rest position and a detecting position. In the detecting position the sensor equipment is constructed to detect at the processing region of the tool held at the tool mount an unacceptable deviation beyond a predetermined amount from a desired geometry.

Abstract: A method of electrically enhancing oil-recovery from an underground rock formation comprising an oil-bearing reservoir is herein detailed. According to the method a controlled electrical charging potential between two or more electrically conductive elements is imposed for a charging time sufficient to cause a capacitive charging of the rock formation, the charging being followed by lowering or maintaining the charging potential below 40 mV per running meter between the conductive elements; during oil withdrawal. Further, a capacitor charging pump having feedback means for use with the method is detailed.

Abstract: A device for processing spectacle lenses has a work chamber, which is accessible by way of an opening and in which a workpiece mount and at least one tool mount are opposite one another and movable relative to one another so that a processing region of a tool held at the tool mount can be brought into processing engagement with a workpiece held at the workpiece mount and in processing engagement can be guided over the workpiece. For recognition of wear at the tool, a sensor equipment with at least one contactlessly operating sensor arrangement is provided and is movable outside the work chamber between a protected rest position and a detecting position. In the detecting position the sensor equipment is constructed to detect at the processing region of the tool held at the tool mount an unacceptable deviation beyond a predetermined amount from a desired geometry.

Abstract: A method of electrically enhancing oil-recovery from an underground oil-bearing reservoir (3), comprising: (a) selecting an underground rock formation (2) comprising an oil-bearing reservoir (3); (b) positioning two or more electrically conductive elements (4, 5) at two or more spaced apart locations in proximity to said formation (2, 3), at least one of said conductive elements (4, 5) being disposed in or adjacent to a bore hole affording fluid communication between the interior of said bore hole and said formation; (c) imposing a controlled electrical charging potential between said two or more electrically conductive elements (4, 5) for a charging time sufficient to cause a capacitive charging of said formation to an operating charging potential; (d) lowering or maintaining said charging potential below 40 mV per miming meter between said two or more electrically conductive elements (4, 5); and (e) withdrawing oil from at least one of said bore holes.

Abstract: A computer program for spine mobility simulation is configured, if running on a computer, to cause the computer to perform the following steps: a) accessing bio-metric data which relate to the spine of a patient, the spine having at least one compromised spine segment; b) displaying a model of the spine of the patient comprising a plurality of vertebrae; c) enabling a user to change the position of at least one of the vertebrae of the spine model; d) computing the effects of the position change on the remaining vertebrae; e) displaying the spine model in a new configuration, thereby taking into account the position changed by the user in step c) and the position changes of the remaining vertebrae computed in step d).