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Type of ammeter
A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected
Mirror_galvanometer
Instrument to measure electric current
A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called
Galvanometer
Former undersea telegraph cable
was required. While waiting for the next voyage, he developed his mirror galvanometer, an extremely sensitive instrument, much better than any until then
Transatlantic_telegraph_cable
A ballistic galvanometer is a type of sensitive galvanometer; commonly a mirror galvanometer. Unlike a current-measuring galvanometer, the moving part
Ballistic_galvanometer
Device used to inscribe telegrams
The syphon recorder replaced Thomson’s previous invention, the mirror galvanometer as the standard receiving instrument for submarine telegraph cables
Syphon_recorder
Device which creates images with lasers
professional use. It consists of a housing that contains lasers, mirrors, galvanometer scanners, and other optical components. A laser projector may contain
Laser_projector
A vibration galvanometer is a type of mirror galvanometer, usually with a coil suspended in the gap of a magnet or with a permanent magnet suspended in
Vibration_galvanometer
British physicist, engineer and mathematician (1824–1907)
every 3.5 seconds. He patented the key elements of his system, the mirror galvanometer and the siphon recorder, in 1858. Whitehouse still felt able to ignore
Lord_Kelvin
Electromechanical recording device
high-speed recorder used beams of ultraviolet light reflected off mirror galvanometers, directed at light-sensitive paper. The earliest instruments derived
Chart_recorder
German physicist (1796–1877)
journal for 52 years, until 1876. In 1826, Poggendorff developed the mirror galvanometer, a device for detecting electric currents. He was noted for his extensive
Johann_Christian_Poggendorff
Controlled deflection of laser beams
Additionally, the mirrors can lead to a periodic motion - like the rotating polygon mirror in a barcode scanner or so-called resonant galvanometer scanners -
Laser_scanning
Quasi-peak audio level meter originally developed in the 1930s
electro-mechanical displays. These took the form of moving-coil panel meters or mirror galvanometers with demanding 'ballistics': the key requirement being that the indicated
Peak_programme_meter
oscilloscope reaches back to the first recordings of waveforms with a galvanometer coupled to a mechanical drawing system in the second decade of the 19th
History_of_the_oscilloscope
could record single system optical sound-on-film tracks contained a Mirror galvanometer, which was a device that recorded sound on the film by means of a
Auricon
Technology that uses a laser to cut materials
converting Laser drilling Laser engraving List of laser articles Mirror galvanometer Water jet cutter Oberg & Jones 2004, p. 1447. Thomas, Daniel J. (February
Laser_cutting
Long distance transmission of text
all day to send a message despite the use of the highly sensitive mirror galvanometer developed by William Thomson (the future Lord Kelvin) before being
Telegraphy
English surgeon and electrical engineer (1816–1890)
inadequate apparatus had to be replaced by Thomson's more sensitive mirror galvanometer but Whitehouse then ruined the cable by delivering massive shocks
Wildman_Whitehouse
Irish contributions to science, technology, and engineering
Island, County Kerry. His work on signal transmission theory and mirror galvanometer design solved problems that had doomed earlier attempts. 1866: Standard
Timeline of Irish inventions and discoveries
Timeline_of_Irish_inventions_and_discoveries
Transoceanic communication line placed on the seabed
minimized current by resonating the cable, and a sensitive light-beam mirror galvanometer for detecting the faint telegraph signals. Thomson became wealthy
Submarine communications cable
Submarine_communications_cable
interferometer Microplasma Microprobe Microscale thermophoresis Mirror Mirror galvanometer Mirror mount Missile guidance Mobile Tactical High-Energy Laser Mode-locking
List_of_laser_articles
Early film audio synchronization system
creating a variable-density track, the GE system employed a fast-acting mirror galvanometer to create a variable-area soundtrack. A number of demonstrations
RCA_Photophone
Russian physicist (1859–1906)
battery to pass through it, with the impulse being picked up by a mirror galvanometer. After receiving a signal, the metal filings in the coherer had to
Aleksandr_Popov_(physicist)
Storing sound recordings on film
photoelectric process that captured audio waveforms generated by a vibrating mirror galvanometer, and was the first effective multitrack recording system, predating
Optical_sound
British learned society
William Thomson, and its success was due to the use of Thomson's mirror galvanometer. Josiah Latimer Clark and Fleeming Jenkin made preparations. Thomson
British_Science_Association
British polymath (1833-1885)
cablegram in ink instead of merely flashing it by the moving ray of the mirror galvanometer, was introduced on long cables and became a source of profit to Jenkin
Fleeming_Jenkin
Lodge's setup the slight impulses from the coherer were picked up by a mirror galvanometer which would deflect a beam of light being projected on it, giving
Invention_of_radio
Mirror galvanometer by James W. Queen & Company
James_W._Queen_&_Company
Odontological Society of London opens the Dental Hospital of London. Mirror galvanometer invented by William Thomson, 1st Baron Kelvin. The Miners Association
1858_in_the_United_Kingdom
Instrument used to study object movement
early pioneers to employ for instance rotating mirrors, or vibrating mirrors known as mirror galvanometers.{citation needed} In 1917, French engineer Etienne
Stroboscope
Danish ship built in 1903
electrician and his assistants tested the cable using instruments like the mirror galvanometer. The testing Room was located on the spar deck below the bridge.
CS_Pacific
English physicist and electrical engineer (1851–1940)
Lodge's setup the slight impulses from the coherer were picked up by a mirror galvanometer which would deflect a beam of light being projected on it, giving
Oliver_Lodge
the main pulse, cancelling the worst of the retarded signal. The mirror galvanometer designed by Lord Kelvin made it easier to read weak signals, and
Electrical telegraphy in the United Kingdom
Electrical_telegraphy_in_the_United_Kingdom
Analogue computer used in the Dutch Delta Works project
common-mode rejection required by the amplifiers were achieved using mirror galvanometer-based designs. Each module contained four such amplifiers and a ECC81
Deltar
Science Museum in Leiden, Netherlands
volt meters, a resistance box, radio valves, a universal bridge, mirror galvanometers, a quadrant electrometer . Apparatuses to study radiation: a Wilson
Museum_Boerhaave
transatlantic telegraph cable; however, it fails on September 1. Mirror galvanometer invented by William Thomson, 1st Baron Kelvin. Hoffmann kiln patented
1858_in_science
American mathematician
(1906), 149–157. "A simple device for measuring the deflections of a mirror galvanometer", Proc. Amer. Acad. Arts Sciences 42 (9) (1906), 173–174. "On the
Benjamin_Osgood_Peirce
accuracy, the object should appear dark gray or black when cold. Mirror galvanometer Glossmeter Bud, Robert; Warner, Deborah Jean (1998). Instruments
Disappearing-filament pyrometer
Disappearing-filament_pyrometer
Display device for presentation of images, video, or text transmitted electronically
primary colors, and this beam is scanned electro-mechanically (galvanometer scanner, micro-mirror array)) or electro-acousto-optically. Depending on the shape
Electronic_visual_display
Kind of show made with laser light
positions with mirrors to create laser sculptures. Laser scanners reflect the laser beam on small mirrors which are mounted on galvanometers to which a control
Laser_lighting_display
Examination of the heart's electrical activity
string galvanometer. This device instead combined amplifier tubes similar to those used in a radio with an internal lamp and a moving mirror that directed
Electrocardiography
Device for measuring a physical quantity
see: Orders of magnitude (charge) Ammeter Clamp meter d'Arsonval galvanometer Galvanometer Oscilloscope allows quantifying time-dependent voltages Voltmeter
List_of_measuring_instruments
Aspect of photography history
of the single-lens reflex camera (SLR) begins with the use of a reflex mirror in a camera obscura described in 1676, but it took a long time for the design
History of the single-lens reflex camera
History_of_the_single-lens_reflex_camera
Type of image projector
experiments involving sorts of movement with the magic lantern. These include: Galvanometer slide: a flattened coil with a magnetized needle moving from side to
Magic_lantern
Changing the direction of the main lobe of a radiation pattern
units, galvanometer mechanisms that rotate mirrors, Risley prisms, phased-array optics, and microelectromechanical systems using micro-mirrors. The scope
Beam_steering
British physicist
the moving coil oscillograph, as well as the thermo-ammeter and thermo-galvanometer. Duddell was born William Du Bois to Frances Kate Du Bois, who married
William_Duddell
A microscanner, or micro scanning mirror, is a microoptoelectromechanical system (MOEMS) in the category of micromirror actuators for dynamic light modulation
Microscanner
Type of electrical telegraph
magnetic effect of the current. Johann Schweigger had already invented the galvanometer (in September) using such a multiplier, but Ampère either had not yet
Needle_telegraph
1976 35mm single-lens reflex camera
This consists of a centre-the-needle exposure control system using a galvanometer needle pointer moving between vertically arranged +/– over/underexposure
Pentax_K1000
1971 35mm single-lens reflex camera
1977. The DP-1 had a center-the-needle exposure control system using a galvanometer needle pointer moving between horizontally arranged +/– over/underexposure
Nikon_F2
1978 35mm single-lens reflex camera
centerweighted, silicon photodiode light meter. A left side viewfinder galvanometer needle pointer indicated the exposure on a shutter speed scale. The viewfinder
Nikon_EM
Type of television
polygonal mirror gives the laser beam the horizontal refresh modulation. It reflects off of a curved mirror onto a galvanometer-mounted mirror which provides
Laser_TV
German physicist and physiologist (1821–1894)
calf muscle to which it attached. He used a galvanometer as a sensitive timing device, attaching a mirror to the needle to reflect a light beam across
Hermann_von_Helmholtz
limited rotation motor called a galvanometer (commonly referred to as a galvo). A scanner is a galvo with a mirror attached to it. When the current is
Pascal_Photocoagulator
American movie camera manufacturer (1919–1979)
was a highly modified NC which included an RCA optical sound recording galvanometer and a "sound translation point" which was separate from the camera's
Mitchell_Camera
Camera brand
FT's exposure control system was a "center-the-needle" system using a galvanometer needle pointer moving vertically at the lower right side of the viewfinder
Nikkormat
Instrument for measuring electric charge
observed by a beam of light reflected from a small mirror attached to the sector, just as in a galvanometer. The engraving on the right shows a slightly different
Electrometer
Application of experimental method to psychological research
have a lens so an appropriate speed for the film can be reached. The galvanometer is an early instrument used to measure the strength of an electric current
Experimental_psychology
Type of spring
metal &c. This led to its use in other scientific instruments, such as galvanometers, and the Nichols radiometer which measured the radiation pressure of
Torsion_spring
In the secondary wire he inserted a galvanometer. On making his first test he observed no results, the galvanometer remaining quiescent, but on increasing
History of electromagnetic theory
History_of_electromagnetic_theory
American physicist
prism mounting featuring a single rock salt prism with a mirrored back, and an analog galvanometer for presenting results. Users could quickly select between
Robert_Brattain
Equipment used in induction heating
flowed in the secondary winding, which could be measured by means of a galvanometer. If the circuit remained energised then the current ceased to flow. On
Induction_heater
French engineer
by Bourbouze are as follows: Vertical galvanometer Equipment for measuring the free fall Hygrometer with mirror and hygrometer for condensation System
Jean-Gustave_Bourbouze
Gaining awareness of biological processes
27: 951–960. Forbes A, Mann DW (1924). "A revolving mirror for use with the string galvanometer". J. Opt. Soc. Am. A. 8 (6): 807–816. Bibcode:1924JOSA
Biofeedback
American engineer
prism mounting featuring a single rock salt prism with a mirrored back, and an analog galvanometer for presenting results. Cary and Beckman adapted features
Howard_Cary
Season of television series
extensively that it is, in fact, plausible that an array of mirrors (or a parabolic mirror) could set objects on fire, the MythBusters stood by their original
MythBusters_(2006_season)
Historic site in Queensland, Australia
detected by the guard loop, the operator would wait until there was also a galvanometer "swing" on the mine loop and then the mines would be detonated by sending
RAN_Station_9,_Pinkenba
French manufacturer of scientific equipment
giving for examples Leclanché cells, the Radiguet battery, compasses, galvanometers, and radiography equipment. They also sold polarimeters, microscopes
Radiguet_et_Fils
English audio engineer (1877–1965)
wire as the gun-wave struck was recorded by a Wheatstone bridge and galvanometer. Tucker had to send for platinum wire to be delivered to him at Kemmel
William_Sansome_Tucker
Medical diagnostic method
LDPI, a low-power laser beam is scanned across a region (e.g., with galvanometer mirrors). For each position, a photodetector captures backscattered light
Laser_Doppler_imaging
Connection between brain and computer
sophisticated measuring devices, such as the Siemens double-coil recording galvanometer, which displayed voltages as small as 10−4 volt, led to success.[citation
Brain–computer_interface
Class of radio antenna
waves which induced currents in the other wire, detected by a sensitive galvanometer. Starting in 1882, Amos Dolbear also used grounded vertical wire antennas
Monopole_antenna
Determining gun location from its sounds
French had made an important development. They had taken the string galvanometer and adapted it to record signals from microphones onto photographic film
Artillery_sound_ranging
Instrument that records seismic waves by measuring ground motions
voltage generated in the photomultiplier was used to drive galvanometers which had a small mirror mounted on the axis. The moving reflected light beam would
Seismometer
Physicist, biologist and botanist (1857–1937)
2017. "J C Bose: The Scientist Who Proved That Plants Too Can Feel". Phila Mirror: The Indian Philately Journal. 30 November 2010. Retrieved 3 August 2012
Jagadish_Chandra_Bose
Scientific instruments
the beam into multiple traps. With acousto-optic deflectors or galvanometer-driven mirrors, a single laser beam can be shared among hundreds of optical
Optical_tweezers
Gyroscope by Johann Gottlieb Friedrich von Bohnenberger in Tübingen 1820: Galvanometer by Johann Schweigger in Halle 1827: Ohm's law by Georg Ohm 1833: Magnetometer
List of German inventions and discoveries
List_of_German_inventions_and_discoveries
Irish physicist (1820–1893)
.. the design of experiments which increased the deflections of the galvanometer by two orders of magnitude from the earlier measurements for double refraction
John_Tyndall
Willem Einthoven, working in Leiden, used his more sensitive string galvanometer, than the capillary electrometer that Waller used. Einthoven assigned
List of Dutch inventions and innovations
List_of_Dutch_inventions_and_innovations
Cardan grille (cryptography) Philip Cardew (1851–1910), UK – Hot-wire galvanometer Chester Carlson (1906–1968), U.S. – Xerographic copier Wallace Carothers
List_of_inventors
Associated Legendre polynomials Association of Los Alamos Scientists Astatic galvanometer Asterix IV laser Asteroseismology Astigmatism Astro Space Center (Russia)
Index_of_physics_articles_(A)
microscopes the scanning is usually performed using bulky galvanometer or resonant scanning mirrors. Endomicroscopes either have a miniaturised scanning head
Endomicroscopy
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