Dissector


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Dissector

 

a television camera tube that does not store electrical charge. Dissectors are chiefly used in auxiliary automatic television systems (for example, to find the position of a light source). Upon illumination, the photocathode of a dissector emits electrons from its surface with a flow density corresponding to the distribution of the illumination on the surface. The electron image thus created on the photo-cathode is transferred by an electrical field in a uniform magnetic field that focuses the image on an electron multiplier tube. The electron image is broken down into discrete electrical signals by the magnetic field of deflection coils, which varies in two perpendicular directions with respect to the input aperture of the electron multiplier tube. These signals are then passed from the collector of the electron multiplier tube to an amplifier in the automatic system. The sensitivity of a dissector is low.

V. I. BARANOV

References in periodicals archive ?
Online Dissector is unique because it teaches the dissection of human cadavers and focuses on efficient use of tools and cutting techniques.
Dissector: I mean, come on, he looks way cooler now anyway.
The Dissector is now included in three online, international databases: CINAHL, Academic OneFile and the British Nursing Index (BNI), with full text database from March 2013 onwards.
The 2018 award went to Sarah Hasselman (Hawkes Bay Region), who writes about her conference experience in this issue of The Dissector (Vol.
Shona was part of the original steering group that culminated in the inclusion of medical imaging nurses within the Perioperative Nurses College and has been actively involved since, with membership of The Dissector Editorial Committee from 2011 and Chief Editor since 2015.
* two dedicated medical imaging pages wile be allocated in The Dissector, containing information of interest to MINs and updates of news from the regions.
The Dissector committee plans to publish an issue next year featuring infection prevention and control with a contribution from this great presenter.
By joining the college, MINs will have: professional representation from the largest New Zealand nursing organisation; access to professional development through regional study days; dedicated medical imaging papers at PNC conferences; dedicated pages in The Dissector and a dedicated link on the PNC website.
I wish to thank the Perioperative Nurses College National Committee, The Dissector Editorial Committee and the Professional Educational Committee for their work throughout the year.
An ON-DEMAND ratchet dial lets the surgeon decide when to lock or unlock, whether using a scissor, grasper or dissector. The versatile and cost effective MEG line offers two options: disposable cartridges or the Tip-on-Tube[TM] Reusable Tube and Jaw Inserts available in many popular styles.
Thirty years of publication of The Dissector, the quarterly journal of the Perioperative Nurses' College of NZNO, have now been bound and indexed, and will be available to members as a reference resource from NZNO's library at national office in Wellington.