| rotating anode | In diagnostic radiography, modern X-ray tubes that have a mushroom-shaped anode that rotates rapidly to avoid local heat buildup from electron impact during X-ray generation. (05 Mar 2000) |
|---|---|
| rotating anode tube | A modern X-ray tube, in which heat buildup is distributed through a larger volume by rotating the target. (05 Mar 2000) |
| panoramic rotating machine | An X-ray machine using a reciprocating motion of the tube and extraoral film to produce a radiograph of all the teeth and surrounding structures. (05 Mar 2000) |
|---|---|
| nosepiece rotating | <microscopy> A device on the end of the microscope tube to permit the mounting of two to six objectives, any of which may be swung into place, ready for use, by rotating the nose-piece to the desired position. The nosepiece usually occupies a mechanical-tubelength space of 15 mm. (05 Aug 1998) |