Beam used in surgeryFiggerits answers

A surgeon uses a handheld device that uses ultrasonic energy. This is electricity converted into mechanical energy. It's used to cut tissue, seal blood vessels, and control bleeding.

In contrast to camera manufacturers' desire for incompatibility, consumer demand for interchangeability has driven the development of lens mount adapters and interchangeable mount systems by third-party lens manufacturers. In principle a mechanical lens mount adapter can be created for a camera with a given register (aka Flange Focal Distance or FFD) that will mount lenses designed for cameras of any greater register. Adapting a lens designed for a smaller register either (a) requires an optical adapter (which lowers image quality), or (b) prevents focussing beyond a certain distance. (Even with a greater register, there may be mechanical limitations.)

The table below lists known camera lens mounts by name, register (Flange Focal Distance), and mechanical description. The table can be sorted by any of these parameters by clicking the sort icons in the table header. The data in this table has been compiled from a variety of sources including our own pages, the Cornell University camera mount list, and William-Jan Markerink's lens flange distance table. See the Links section below for some of our sources.

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Surgeons may use traditional tools. These include surgical knives (scalpels). But both open and minimally invasive surgery can also use these other methods. Their use depends on what needs to be done.

A surgeon can also use electrical tools. These run on high-frequency electric currents that cut and control bleeding. One example of this is electrocoagulation. It helps control bleeding by clotting the blood. Another example is electrodesiccation. It's used to remove small growths by destroying the tissue with an electric current.

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Like many medical facilities across the nation, our supply chain is feeling the effects of Hurricane Helene’s aftermath. Johns Hopkins Medicine currently has a sufficient sterile fluid supply to meet treatment, surgical and emergency needs. However, we have put proactive conservation measures into place to ensure normal operations, always with patient safety as our first priority. Examples of sterile fluids include intravenous (IV), irrigation and dialysis fluids. Learn more.

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Some lens manufacturers specifically design lenses to be relatively easy to convert to any one of several different proprietary mounts.[1]

Most lens mounts fall into one of several categories of mechanical operation: threaded screw, bayonet, or breech lock. A few additional variations or combinations are rarely used such as multi-start threaded screw mounts. The primary motivation for the proliferation of lens mounting systems and the incompatibility between different manufacturers' mounting systems is vendor lock-in; the desire to force a consumer to continuing buying hardware of a given brand by assuring their hardware will not be compatible with other brands.

A laser is a device that sends out a concentrated focused beam of light. It can repair damaged tissue or destroy certain cells. The surgeon can use it to cut through tissue without damaging nearby cells. Laser has been used in place of surgical cutting tools in various surgeries. These include eye surgery, gynecological procedures, and dental procedures. It can also be used in cosmetic surgery. This would be used to remove skin scars, tattoos, wrinkles, and also small tumors.

This table necessarily lacks detail that has important implications. As an example, both Nippon Kōgaku and Cosina have made specialist lenses popularly termed "Nikon F mount" that are much as described below but extend backward so far that the camera's mirror must be locked up; this in turn (i) limits the usable "Nikon F mount" cameras to those that have mirror lock-up and (ii) means that the resulting combination is no longer a SLR. Therefore the table should only be taken as an introductory guide to which lenses work with which bodies.

A lens mount is a mechanical and also sometimes an electrical interface between a camera and a lens that allows cameras to have interchangeable lenses. Still and motion picture cameras, as well as other optical equipment, use lens mounts. Some are unique to a particular device or manufacturer (and protected by patent); for some, the patent has expired; and others again are designed to be shared by cameras from multiple manufacturers.