A crystal detector is an obsolete electronic component used in some early 20th century radio receivers that consists of a piece of crystalline mineral...

component, a crystal detector, originally made from a piece of crystalline mineral such as galena. This component is now called a diode. Crystal radios are...

called a detector. A variety of different detector devices, such as the coherer, electrolytic detector, magnetic detector and the crystal detector, were...

"standard" 3″ x 3″ NaI(Tl) scintillation detector. Crystal growth techniques have since improved, allowing detectors to be manufactured that are as large...

most famous for the development of the crystal detector, the earliest type of diode detector. The crystal detector was the central component in many early...

physicist Ferdinand Braun's crystal detector in 1874 and Indian physicist Jagadish Chandra Bose's radio crystal detector in 1901. In the years preceding...

over earlier detectors such as the coherer. One popular type of crystal detector, often called a cat's whisker detector, consists of a crystal of some semiconducting...

a rectifying detector such as a crystal detector or electrolytic detector, along with the radio signal from the antenna. In the detector the two signals...

and hence the wavelength of the emitted optical photon. A scintillation detector or scintillation counter is obtained when a scintillator is coupled to...

miniaturized the crystal detector. Point contact diodes (crystal diodes) and Schottky diodes are used in radar, microwave and millimeter wave detectors. Rectifiers...

coupling, and later on the usage of crystals for receiving purposes. Around 1898, he invented a crystal detector [citation needed]. Wireless telegraphy...

magnetron. Adding to their problems was the lack of a suitable rugged crystal detector, which was the only system able to reliably detect these high frequency...

problematic. Crystal scintillator experiments are a middle ground between cryogenic crystal detectors and noble gas scintillators, using the crystals of the...

operation of his galena crystal detector in his lectures. A friend in the US persuaded him to take out a US patent on his detector, but he did not actively...

The Crystal Ball was a hermetic particle detector used initially with the SPEAR particle accelerator at the Stanford Linear Accelerator Center beginning...

physicist Ferdinand Braun's crystal detector in 1874 and Indian physicist Jagadish Chandra Bose's radio crystal detector in 1901. The first silicon semiconductor...

as a mineral detector in radio receivers, and is still used by crystal radio hobbyists. Until the vacuum tube matured, the crystal detector was the most...

1907, when they were replaced by more sensitive electrolytic and crystal detectors. The behavior of particles or metal filings in the presence of electricity...

synthetic zincite crystals are significant for their early use as semiconductor crystal detectors in the early development of crystal radios before the...

over the difficulty of adjustment of the crystal detector and the susceptibility of the crystal detector to being dislodged from adjustment by vibration...

used until about 1913, after which it was superseded by crystal detectors and vacuum tube detectors such as the Fleming valve and Audion (triode). It was...

arrangement for selecting from a choice of crystals), a single detector assembly (but usually with more than one detector arranged in tandem), and a single electronic...

(from Greek: pyr (πυρ), "fire" and electricity) is a property of certain crystals which are naturally electrically polarized and as a result contain large...

of detectors including coherers, barretters, and crystal detectors. The most popular crystal detector consisted of a small piece of galena crystal probed...

the point-contact crystal detector (cat's whisker detector), which was used as a demodulator in the first early radio receivers, crystal radios before powered...

semiconductor detectors, an electric field is applied to the detector volume. An electron in the semiconductor is fixed in its valence band in the crystal until...

A solid-state nuclear track detector or SSNTD (also known as an etched track detector or a dielectric track detector, DTD) is a sample of a solid material...

detector. There are two key aspects to effective neutron detection: hardware and software. Detection hardware refers to the kind of neutron detector used...

A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a signal which represents the difference in...

obsolete technology, the point contact crystal detector (cat whisker detector) which was used as a demodulator in crystal radios around the turn of the century...