Hydrophone

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OBJECT TYPE
home made
DATE
1970–1980
ARTIFACT NUMBER
2021.0069.001
MANUFACTURER
Unknown
MODEL
No. 19
LOCATION
Unknown

More Information


General Information

Serial #
N/A
Part Number
1
Total Parts
2
AKA
N/A
Patents
N/A
General Description
An object made with metal and synthetic material/Un objet fait avec du matériel en métal et synthétique.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
42.0 cm
Width
5.0 cm
Height
5.0 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Communications
Category
Sound
Sub-Category
N/A

Manufacturer

AKA
Unknown
Country
Unknown
State/Province
Unknown
City
Unknown

Context

Country
Canada
State/Province
Unknown
Period
This artifact was likely used between 1970 and 1980 depending on exact time of manufacturing.
Canada
Chester Beachell was a Senior Research Officer, Technical Research Division at the National Film Board from 1951 to 1980. He participated in many projects documenting research expeditions for the NFB. Beachell wrote that “the presence of all this sound in the ‘silent world’ convinced him that he should design and build high quality hydrophones, and a recorder, which could be carried by a diver”. He designed his first experimental hydrophone in November 1970 following a request from Bané Jovanovic, the director of NFB film The Sea. He continued to develop improved hydrophone technology, resulting in underwater recordings that were used in a number of films produced by the National Film Board of Canada. Chester Beachell était le chercheur senior au Technical Research Division aux National Film Board entre 1951 et 1980. Il a participé dans plusieurs projets pour documenter de la recherche durant des expéditions avec le NFB. Beachell a écrit que la présence de tout ce bruit dans un monde silencieux la convaincu qu'il devait construire un hydrophone de grandes qualités ainsi qu'un enregistreur qui pouvait être utilisé par un plongeur. Son premier hydrophone a été construit en 1970 grâce à une demande de Bané Kovanovic pour le film: The Sea qui a été produit par NFB. Il a continué à développer a et améliorer la technologie de l'hydrophone et a pu capturer de nombreuseux enregistrements qui ont fini par être utilisé dans plusieurs films produit par le NFB.
Function
A hydrophone is an underwater microphone designed pick up acoustic energy, or sound waves, by detecting changes in pressure in the surrounding environment and converting them into changes in electrical voltage. This hydrophone would have been powered by a 9-volt power supply and attached to a tape recorder. Un hydrophone est un microphone utilisé sous l'eau qui peut recevoir de l'énergie acoustique ou des ondes sonores en détectant les changements de pressions dans l'environnement et il peut les convertir en voltage. Ce hydrophone utilisait un bloc d'alimentation avec neuf volts et étais attaché à un enregistrer à bande magnétique.
Technical
Early hydrophones were improved for military use, primarily for the purpose of locating submarines and icebergs. Hydrophone arrays, or large groups of hydrophones positioned thousands of miles apart, were also used for navigational purposes and in military tracking and contained pre-amplifiers to limit noise contamination. In addition to military purposes, hydrophones today are used to study marine life and assist in undersea conservation effort. The ordinary elastic bands, bimorph crystal, and protective grill are indicative of Beachell’s early work and can be seen when looking at Hydrophone No. 19. It is likely made out of “hard duraluminum” which allowed Beachell’s hydrophones to withstand pressures of at least 45atm, a depth of 1500ft and was likely coated in Verithane to protect the silver coating from the salt water. Les premiers hydrophones étaient améliorés pour le militaire et était favorisé pour localiser les sous-marins et les glaciers. Des hydrophones séparent intermittent pouvait aussi être utilisé pour naviguer l'océan pour le militaire et en utilisant des pré amplificateurs ils pouvaient aussi limiter la contamination du bruit enregistrer. Cette technologie était aussi utilisée pour étudier la vie marine et aider avec l'effort de la conservation sous l'eau. Les élastiques normaux ainsi que le cristal bimorphe et la grille protectrice sont indicatives des premiers hydrophones de Beachell et ils sont visibles quand nous regardons Hydrophone No. 19. L'objet est probablement construit avec du duraluminum qui permettait à l'hydrophone de résister à des pressions de 45atm ou une profondeur de 1500 pieds et il était probablement recouvert avec de la véritane pour protéger l'argenture de l'eau salée.
Area Notes
Unknown

Details

Markings
On the sticker on the hydrophone/Sur l'autocollant sur l'hydrophone: "CHESTER E. BEACHELL/ 13552-67 Street, Edmonton,/Alberta -- (780/ 467 0201/ HYDROPHONE POWER SUPPLY No. 19/ 9 volt battery required or,/ External 9 volt battery, Neg. Gng., On the cable adapter/Sur l'adapteur de câble:"A3m, SWITCHCRAFT, US. PAT.3219961/ CAN. PAT.761114", On the head of the hydrophone/Sur la tête de l'hydrophone: "HYDROPHONE/ NO. 19/ Ches. Beachell".
Missing
None apparent/L'objet a toutes ces pièces
Finish
A black painted cylindrical shaped hydrophone made of metal with a silver coloured handle. A black synthetic cable extends from the base of the hydrophone and has a metal jack cable adapter attached to its end. The jack has a patent number engraved on it. The head of the hydrophone has a metal grate as well as yellow lettering on the top of its head. A white sticker with black writing is also visible along the handle. Un hydrophone en forme cylindrique qui est peinturée noire et faite en métal avec une manche de couleur argent. Un câble synthétique ressort de la base de l'hydrophone et a un adaptateur à câble en métal est attaché sur son bout. Le jack a un numéro de brevet gravé dessus. La tête de l'hydrophone a une grille en métal ainsi que de lettrage jaune sur le dessus de la tête. Un autocollant blanc avec du lettrage noire est aussi visible le long de sa manche.
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Unknown Manufacturer, Hydrophone, circa 1970–1980, Artifact no. 2021.0069, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2021.0069.001/

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