When analog television was developed, no affordable technology for storing any video signals existed ; the luminance signal has to be generated and transmitted at the same time at which it is displayed on the CRT.

The cathode ray tube ( CRT ) is a vacuum tube containing an electron gun ( a source of electrons or electron emitter ) and a fluorescent screen used to view images.

The CRT uses an evacuated glass envelope which is large, deep ( i. e. long from front screen face to rear end ), fairly heavy, and relatively fragile.

As a matter of safety, the face is typically made of thick lead glass so as to be highly shatter-resistant and to block most X-ray emissions, particularly if the CRT is used in a consumer product.

In Europe, disposal of CRT televisions and monitors is covered by the WEEE Directive.

The implosion energy is proportional to the evacuated volume of the CRT.

Under some circumstances, the signal radiated from the electron guns, scanning circuitry, and associated wiring of a CRT can be captured remotely and used to reconstruct what is shown on the CRT using a process called Van Eck phreaking.

Leaded CRT glass is sold to be remelted into other CRTs, or even broken down and used in road construction.

* The maximum practical size for CRTs is around 24 inches for computer monitors ; most direct view CRT televisions are 36 inches or smaller, with regular-production models limited to about 40 inches.

Calreticulin ( CRT ) is expressed in many cancer cells and plays a role to promote macrophages to engulf hazardous cancerous cells.

The reason why most of the cells are not destroyed, is the presence of another molecule with signal CD47, which blocks CRT.

The display device in modern monitors is typically a thin film transistor liquid crystal display ( TFT-LCD ) thin panel, while older monitors use a cathode ray tube ( CRT ) about as deep as the screen size.

On the other hand, CRT monitors have superior contrast, have superior response time, are able to use multiple screen resolutions natively, and there is no discernible flicker if the refresh rate is set to a sufficiently high value.

This method of measurement is inherited from the method used for the first generation of CRT television, when picture tubes with circular faces were in common use.

Displays that have no fixed pixel positions, such as shadow mask CRT displays, may be harder to read if ClearType is enabled.

The term is typically used to describe a family of fairly well known tricks that can overload the analog electronics in the CRT monitors of computers lacking hardware sanity checking ( notable examples being the IBM Portable and Commodore PET.

The CRT is still called the " Braun tube " in German-speaking countries ( Braunsche Röhre ) and in Japan ( ブラウン管: Buraun-kan ).

The LCD is more energy efficient and can be disposed of more safely than a CRT.

This is an historical remnant from the early days of CRT television when CRT screens were manufactured on the bottoms of glass bottles, a direct extension of cathode ray tubes used in oscilloscopes.

On average, 50-70 % less energy is consumed than CRT monitors.

* As of 2012, most implementations of LCD backlighting use PWM to dim the display, which makes the screen flicker more acutely ( this does not mean visibly ) than a CRT monitor at 85 Hz refresh rate would ( this is because the entire screen is strobing on and off rather than a CRT's phosphor sustained dot which continually scans across the display, leaving some part of the display always lit ), causing severe eye-strain for some people.

CRT screens have much deeper cabinets compared to flat panels and rear-projection displays for a given screen size, and so it becomes impractical to have CRTs larger than.

In classic cathode ray tube ( CRT ) devices, the brightness of a given point over the fluorescent screen due to the impact of accelerated electrons is not proportional to the voltages applied to the electron gun control grids, but to an expansive function of that voltage.

A linear response is given by a gamma value of 1. 0, but actual CRT nonlinearities have a gamma value around 2. 0 to 2. 5.

Mostly obsolete, a storage tube is a special monochromatic CRT whose screen has a kind of ' memory ' ( hence the name ): when a portion of the screen is illuminated by the CRT's electron gun, it stays lit until a screen erase command is given.

Under the ' Claiming Rule ', CRT teams agree to allow up to four of their engines per season to be claimed, after a race, by one of the major manufacturer teams at a cost of € 20, 000 each including transmission, or € 15, 000 each for the engine alone.

Output to CRT-based television receivers and monitors does not usually require further gamma correction, since the standard video signals that are transmitted or stored in image files incorporate gamma compression that provides a pleasant image after the gamma expansion of the CRT ( it is not the exact inverse ).

The name Trinitron was derived from trinity, meaning the union of three, and tron from electron tube, after the way that the Trinitron combined the three separate electron guns of other CRT designs into one.

It was also aimed at home constructors, publishing articles on building radio receivers and, after the BBC started regular 405-line TV programmes from Alexandra Palace in 1936, complete details on building your own TV set-including the winding of the high-voltage CRT deflector coils ( not a task for the faint hearted ).

Each patient presented with a bacterial corneal ulcer after wearing CRT contact lenses for less than 6 months.

The CRT attached to the flyback has an inherent capacitance which can hold a high voltage charge for more than a week after the power is switched off.

It ’ s about righting wrongs, not just questing after knowledge " and that CRT is not " radical today in the sense of being outside the mainstream: Critical race theory is widely taught and studied.

The game, which uses a black-and-white CRT display, presents the player with a cut-away view of a section of ocean, on the surface of which is a destroyer with submarines passing beneath it.

Critical race theory ( CRT ) is an academic discipline focused upon the application of critical theory, a critical examination of society and culture, to the intersection of race, law, and power.

These frequencies are at the upper range of human hearing and are inaudible to many people ; however, some people ( especially children ) will perceive a high-pitched tone near an operating television CRT.

By 2008, worldwide sales of televisions with LCD screens exceeded annual sales of CRT units ; the CRT became obsolete for most purposes.

Geometry of color elements of various CRT and LCD displays ; phosphor dots in a color CRT display ( top row ) bear no relation to pixels or subpixels.

An aperture grille ( tension mask ) is one of two major technologies used to manufacture color cathode ray tube ( CRT ) televisions and computer displays ; the other is shadow mask.

At least some Diamondtron CRT faceplates are spherical sectors ; reflections of such objects as ceiling light fixtures are reduced in size and do not change shape regardless of where they appear.

Home theater designs and layouts are a personal choice, and the minimum set of requirements for a home theater are: a television set or video projector CRT ( no new models sold in U. S .), LCD, DLP, plasma display, organic light-emitting diode ( OLED ), SXRD, Laser TV, rear-projection TV, video projector, SDTV, HDTV, or 3DTV at least 27 " inches measured diagonally, an AV receiver or preamp ( surround processor ) and amplifier combination capable of at least stereo sound but preferably 5. 1 Channel Dolby Digital and DTS audio, and something that plays or broadcasts movies in at least stereo sound such as a VHS HI-FI VCR or LaserDisc player ( no new stand-alone models of either are available ; VHS VCRs are usually bundled in combo decks with DVD players ), a DVD player and / or a Blu-ray Disc player, cable or satellite receiver, video game console, etc.

All machines ( like most other computers of the time ) used magnetic core memory ; except for early 701 and 702 models, which used CRT memory.

For those wishing to use the Apple IIc as a standard desktop machine, Apple sold an optional small monochrome CRT display with an elevated stand ; alternatively, a color composite monitor could be used.

The original driving force for thin client computing was often cost ; at a time when CRT terminals and PCs were relatively expensive, the thin-client – server architecture enabled the ability to deploy the desktop computing experience to many users.

The VBI was originally needed because of the inductive inertia of the magnetic coils which deflect the electron beam vertically in a CRT ; the magnetic field, and hence the position being drawn, cannot change instantly.

Blanking of a CRT may not be perfect due to equipment faults or brightness set very high ; in this case a white retrace line shows on the screen, from bottom right to top left.

Apple Inc. currently sells LCD computer displays ; a wide variety of CRT computer displays have been sold in the past.

The corners of the triangle are the primary color s for this gamut ; in the case of a Cathode ray tube | CRT, they depend on the colors of the phosphors of the monitor.

A film recorder exposes film through various mechanisms ; flying spot ( early recorders ; photographing a high resolution video monitor ; electron beam recorder ( EBR ) Sony HDVS ; a CRT scanning dot ( Celco ); focused beam of light from an LVT ( Light valve Technology ) recorder ; a scanning laser beam ( ARRILASER ); or recently, full-frame LCD array chips ;