Copper coil in a stand made of timbercoil, scientific instrument

An induction coil consists of two coils of insulated copper wire wound around a common iron core. One coil, called the primary winding, is made from relatively few (tens or hundreds) turns of coarse wire. The other coil, the secondary winding, typically consists of many (thousands) turns of fine wire. An electric current is passed through the primary, creating a magnetic field. Because of the common core, most of the primary's magnetic field couples with the secondary winding. The primary behaves as an inductor, storing energy in the associated magnetic field. When the primary current is suddenly interrupted, the magnetic field rapidly collapses. This causes a high voltage pulse to be developed across the secondary terminals through electromagnetic induction. Because of the large number of turns in the secondary coil, the secondary voltage pulse is typically many thousands of volts. This voltage is often sufficient to cause an electric spark, to jump across an air gap separating the secondary's output terminals. For this reason, induction coils were called spark coils. The size of induction coils was usually specified by the length of spark it could produce; an '8 inch' (20 cm) induction coil was one that could produce an 8 inch arc. (http://en.wikipedia.org/wiki/Induction_coil)A metal and plastic object on a timber stand. In an induction coil the distance between the plates is often used to measure the voltage of the spark since the air breaks down at 30 000 volts per centimetreballarat college of advanced education, scientific instrument, induction coil, scientific instruments, electricity

The test rig is contained in a metal frame with sloping front panel that contains the indicator and number seting knobs. A pespex lift-up lid coves numerous valve sockets and a set of coding wheels. Both sides and back covered with pespex. Metal surfaces panted hammerton grey. abbreviated working instructions and AVO Valve data manual.Serial Number 1961scientific instrument, ballarat school of mines, valve characteristic meter

commonly known as 'shower of sparks' this buzzer type ignition coil is connected via the distributor and spark plug leads to generate a continuous spark while crank starting the Cheetah aero engine. The type of ignition coil fitted to the Cheetah engine fitted to an Avro Anson, Parts stock unused.electronic ignition coil with high tension outlet and set of adjustable breaker points and connectors. New in original box.D-5271BA Adjust to 2.5 volts with standard secondary load for use on 12 volt system. On Box 'Booster Coil Type 512 Model 1 Style E' serial number 1552 ignition coil, shower of sparks, ignition, garth rohdes

The Weston cell, is a wet-chemical cell that produces a highly stable voltage suitable as a laboratory standard for calibration of voltmeters. Invented by Edward Weston in 1893, it was adopted as the International Standard for EMF between 1911 and 1990.[1] This is a type of standard cell, which is a battery that produces a precisely known voltage in laboratory conditions at 20 degrees centigrade.[2]Brass cylinder with 4 connections at top. Two marked 'A' and the other two marked 'B'. Black plastic nob in the centre top. Written at top Weston Normal Cell I-0183 INT VOLTS AT 20 degrees CWeston Normal Cell H Tinsley & Co, London S E No 50498 No 8910weston cell, wet-chemical cell, stable voltage, voltmeters, edward weston, scientific instrument

Upright rectangular ammeter in acrylic case with two timber 'feet'. Square chrome handle on the top. Semicircular scale, centre zero: 5A-0-5AMod: D.14-P; No 750 8Y Paton Electircal Sydneyscientific instruments, paton electrical, ammeter

A cream coloured manual with black writing on the cover. There is written in blue ink 18615 2Lt L.B. Dawsonelectronic manuals, communications, military radios

These coils of heavy strong cargo rope are covered in hessian for protection from the elements and for ease of handling. They would have been imported for local use such as haulage, fencing and towing. These rope coils or bails are an example of products imported into Australia for local use.Rope; four large coils of thick rope in hessian covers.Some of the covers have remnants of paper labels and black markings.flagstaff hill, warrnambool, maritime museum, maritime village, great ocean road, shipwreck coast, rope, rope coil, rope bail, cargo rope, hessian covered rope

The “Saf-T-Coil” (Julius Schmid Laboratories, Little Falls, New Jersey, USA) IUD was a first generation IUD that entered manufacturing in 1965 and was one of the first inert type plastic IUDs to be commonly used. It was also one of the first to adopt the familiar T-shape of IUDs still used today. It was accepted during its time as being generally safe, effective and easy to insert, with low expulsion rates due to its bulky frame. Production was halted in 1982 for economic reasons as newer contraceptive methods gained popularity. (Madden et al. 'A Case of Migrating “Saf-T-Coil” Presenting With a Vesicovaginal Fistula and Vesicovaginal Calculus', https://www.sciencedirect.com/science/article/pii/S2214442016300286)Saf.T. Coil 33.s intrauterine device, with inserter. Sealed in original sealed plastic packaging, unopened. Shape resembles a double coil with ends that spiral inwards. The inserter has an adjustable blue 'stop' pre-set at 1 3/4" for insertion into a 'normal' uterus. There is also an instruciton leaflet enclosed.intrauterine device, contraception

"Ford-Coil" (Induction coil) used with batteries for high tension induction

Coil of khaki coloured roperope

Bookplate featuring a coiling snake"J.D.Collie"bookplate, j d collie, snake

A coil of khaki coloured rope

Induction Coil - used in lecture demonstrations

Rectangular frame with coiled metal wires on two opposite sides. Symmetrical placement of screws with connecting wires and terminals between the two sides. Removable cylindrical pin through center of top plate. Four smaller coils of wire secured to underside of top plate. Object rests on ends of three screw feet, two forward and one rear.Engraved at center of top plate: ' H. TINSLEY & CO. LONDON S. E.' Engraved at lower centre of top plate: 'NO 16949' Engraved on top of cylinder pin: 'NO 19908' Front side of top plate engraved with: 'DEFLECTING COILS' Engrave on center base of front side: '10 / VOLTS' Left side of top plate label: 'NAT. PHIL. LAB. / NO 65 / UNIV. OF MELB.' Associated label separate to object also has inscription on recto: 'Schering & / Schmidt / Galvanometer' and upside down on verso: 'A. C / [r] [e] [...] Gold[l]ing / p.p. 245' (writing unclear)galvanometer, tinsley & co, schering & schmidt, electrical instruments, ammeters

The Fluotec vaporizer was made to administer only halothane (Fluothane). It was one of the first vaporizers made for use with only one anesthetic, and one of the first to use a bimetallic coil for temperature compensation.The bimetallic coil is part of the valve that controls how much of the carrier gas enters the vapor chamber to vaporize the anesthetic.Modern vaporisers still use this bimetallic coil technology today. Serial No: 5040 Patent No: 814427 A ready reference “calibration card” came attached to these vaporizers. The card was printed with a scale that indicated the concentration of halothane produced at different flow rates and dial settings.This item does not have a reference card with it.This Flotec vaporiser holds historic significance as a very good example of an early model piece of equipment for halothane only administration. Modern vaporisers still use the bimetallic coil technology and therefore this object has scientific and research significance.Small metal stand with 3 rubber feet, Main metal cylinder body housing the bimetallic coil. Inlet valve with a brass attachment and metal outlet valve. Metal dial that controls % Penthrane. Dial notches range from OFF to 1.5. Small silver chain hangs from the top of the dial lever. Small silver metal box held by 4 screws and a round bakelite window with FULL inscribed in white text located on the front of the main cylinder Fluothane Cyprane vaporiser. Fluotec Mark II by Pentec, with stand. Royal Children's HospitalStamped on Inlet and outlet valve: INLET OUTLET Stamped on to a plate on the front of the vaporiser: KEEP UPRIGHT / PENTHRANE / WHEN CHARGEDinhaler, fluotec mark ii

8499.1 - Yellow wax coating on coil of rope.

Used to cut biscuits by rolling cutter along biscuit mixture.Round, metal biscuit cutter, with coiled handle.biscuit cutters

From the first Japanese aircraft shot down over Port Moresby. Souvenired by Capt Ernest King NEWMAN V X100091. Refer Cat No 317 for his service history.Two different sized coiled lengths of parachute cord.military, cord parachute

This globe is unusual as the filament is coiled and held by 5 points coming from a tall glass piece inside the globe. This light globe belonged to the S.E.C.V and may have been used for a special purpose on the Kiewa Hydro Electric Scheme.The S.E.C.V. built the Kiewa Hydro Electric Scheme using unique equipment to achieve it construction.A heavy clear glass light bulb with brown bakelite surrounding a cream vitreous fitting. At the base the fitting is wide with 2 tunnel shapes on one side and 1 on the opposite side. Underneath it has 3 holes and is partly hollow. The filament has a tall glass piece with 2 very fine wires on each side near its base and 3 short very fine wires each attached to each coil on its top- one wire.Under the base: 'Made in England / 1908 / Vitreous'light. globe. state electricity commission of victoria. kiewa electric hydro scheme. electricity.

2 pairs of black plastic headphones with black coiled cord and faux leather ear cups and band padding. one pair of white headphones with black headband and coiled cord.

Farm equipment, coil of metal with a spike and a metal label soldered onEmu brand shop twineemu, twine, spool

Flat belts were widely used in line shafting to transmit power in mining applications. The flat belt is a simple system of power transmission that can deliver high power at high speeds. The belts were used with pulley wheels.Long canvas belting with frayed edges, wrapped up in coil.