A cathode is the electrode from which a conventional current leaves a polarized electrical device such as a lead-acid battery. This definition can be...

A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a...

Cathode rays are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied...

heated electron-emitting cathode and an anode. Electrons can flow in only one direction through the device: from the cathode to the anode (hence the name...

A cold cathode is a cathode that is not electrically heated by a filament. A cathode may be considered "cold" if it emits more electrons than can be supplied...

Cathodic protection (CP; /kæˈθɒdɪk/ ) is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell...

In vacuum tubes and gas-filled tubes, a hot cathode or thermionic cathode is a cathode electrode which is heated to make it emit electrons due to thermionic...

hollow cathode effect allows electrical conduction at a lower voltage or with more current in a cold-cathode gas-discharge lamp when the cathode is a conductive...

using a cathode-ray tube as a receiver, the concept of using one as a transmitter was novel. The first cathode-ray tube to use a hot cathode was developed...

A Nixie tube (/ˈnɪk.siː/ NIK-see), or cold cathode display, is an electronic device used for displaying numerals or other information using glow discharge...

first rechargeable lithium-ion battery, based on a titanium disulfide cathode and a lithium-aluminium anode, although it suffered from safety problems...

A hollow-cathode lamp (HCL) is type of cold cathode lamp used in physics and chemistry as a spectral line source (e.g. for atomic absorption spectrometers)...

electronics, cathode bias, also known as self-bias, or automatic bias, is a technique used with vacuum tubes to make the direct current (dc) cathode voltage...

English physicist William Crookes and others around 1869–1875, in which cathode rays, streams of electrons, were discovered. Developed from the earlier...

the conduction of electricity by gases." In 1897, Thomson showed that cathode rays were composed of previously unknown negatively charged particles (now...

through which conventional current enters the device. This contrasts with a cathode, which is usually an electrode of the device through which conventional...

as hot cathodes. However, cold cathode tubes have cathodes that emit electrons only due to the large voltage between the electrodes. The cathodes will be...

discharges are used as a source of light in devices such as neon lights, cold cathode fluorescent lamps and plasma-screen televisions. Analyzing the light produced...

Cathodic arc deposition or Arc-PVD is a physical vapor deposition technique in which an electric arc is used to vaporize material from a cathode target...

means of a direct electric current. The part to be coated acts as the cathode (negative electrode) of an electrolytic cell; the electrolyte is a solution...

response in single kHz, and were superseded by the oscilloscope which used a cathode-ray tube (CRT) as its display element. The Braun tube, forerunner of the...

with two electrodes, a heated cathode and a plate, in which electrons can flow in only one direction, from the cathode to the plate. Among many uses,...

(chemicals) depending on the type of cell. An electrode may be called either a cathode or anode according to the direction of the electric current, unrelated...

hot-filament ionization gauge, sometimes called a hot-filament gauge or hot-cathode gauge, is the most widely used low-pressure (vacuum) measuring device for...

tube which had a perforated cathode. When an electrical potential of several thousand volts is applied between the cathode and anode, faint luminous "rays"...

the German physicist Wilhelm Conrad Röntgen. The first-generation cold cathode or Crookes X-ray tubes were used until the 1920s. These tubes work by ionisation...

drain; for vacuum tubes, common cathode, common grid, and common plate. The common emitter (or common source, common cathode, etc.) is most often configured...

Cathodic protection (CP) is a technique to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. Cathodic protection...

electron beam that has a precise kinetic energy. The largest use is in cathode-ray tubes (CRTs), used in older television sets, computer displays and...

that involves the use of a solution of an electrolyte, an anode, and a cathode. The metal piece to be etched is connected to the positive pole of a source...