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 mining class visited the Last Chance on the afternoon of Thursday, 8th June, under the guidance of Mr Kirby, the mine manager. Mr Campbell, the photographic instructor, also dared the perils of the deep in order to take some flashlight photos. As this was Mr Campbell's first visit below, several difficulties which he did not now existed prevented success. The students all ranged themselves in poetic and heroic attitudes for the first flashlight, but the development of the plate showed only the light from the candles and the moisture on the lens. The next two tries were better, but were under-exposed, and of no value, except as experience. Two gentlemen from England also went below with the students, but history repeated itself and Australia won the "test." The Englishmen left early. Mr Hart secured a fine specimen of arsenopyrite and indicator slate; also a bootlace, the property of a much-vexed miner, whose boots Mr Hart had borrowed. Horrors! Mr Hart steal a bootlace! Impossible! However, a tragedy was averted by the miner securing a new lace, and he was at once all smiles - so were the students. Mr Campbell took a photo of the students dressed for the occasion, and some were flattered, and some looked very like the universal "Weary Willie". (Ballarat School of Mines Students' Magazine, July 1899, p.2.)Over 24 men pose for a photograph outside the Last Chance mine. Some of the men are members of the visiting Ballarat School of Mines mining class. Thomas Hart (beard) stands at the back right. Verso: Copied from Annual report 1898, Thomas Hart - back Row, 2nd from right with beard.ballarat school of mines, last chance, thomas hart, john rowe, hart, mining, mining alumni, rowe, charles campbell

A number of female student teachers of the Ballarat Teachers' College pose at the front of their hostel at 130 Victoria Street, Ballarat East. Mavis Canty stand centre right in dark dress with a rose on the collar.Written on back "Ballarat Teachers' College, Mavis Canty with girls of the Ballarat Teachers College Hostel, 196-"ballarat teachers' college, 130 victoria street, hostel

Associated with SMB and 'Prospects' restaurant. Part of the World Skills Australia competition that aims to promote and build a skills culture by inspiring young people, celebrating skills excellence and providing them with an opportunity to showcase their trade and skill talent through competitions every two years.22 members of the World Skills Team from the Ballarat School of Mines stand at the front of the restaurant 'Prospects', holding an Australian and Eureka flag. The man on the far right is Peter Morey, Apprenticeship Officerworld skills australia, world skills team, prospects restaurant, flag, trades

This photograph was taken on the Federation University Mount Helen Campus when Michael Boyko and Stephen Bibby were researching in preparation for the 50th anniversary Reunion of the Class of 1967.Former Ballarat Teachers' College Class on 1967 Students Stephen Bibby and Michael Boyko stand beside Inge King's Sculpture 'Organic Form'. The Class of 1967 purchased the sculpture by Inge King. ballarat teachers' college, inge king, sculpture, stephen bibby, michael boyke, anniversary

Sepia photograph taken from a point just north of the bridge over the Yarra River at Yarra Glen. A small herd of cattle and a horse are on the river bank and in the water. A horse with rider stands on the bank.On back of postcard at the top "POST CARD". On the left hand side "THIS SPACE MAY BE USED FOR PRINTED OR WRITTEN MATTER”. On the right hand side "ONLY THE ADDRESS TO BE WRITTEN HERE”. In a box in the right hand corner "A HALF-PENNY STAMP TO BE PLACED HERE". Along the left hand margin "Ajax series. Printed in England". horse, yarra river, yarra glen, cattle, horse and rider, river

Bendigo Advertiser ''The way we were'' from 2001. Decore: Percival Tyack, aged 16, stands in front of Bendigo Town Hall with his decorated bike, circa 1910. The clip is in a folder.newspaper, bendigo advertiser, the way we were

Bendigo Advertiser ''The way we were'' from 2001. Curriculum: in 1856 a wooden schoolroom was built where the Eaglehawk state schools now stands. In 1873 it was recognised as a state school. The clip is in a folder.newspaper, bendigo advertiser, the way we were

Black and white portrait photograph of Basil Watson. Timber frame, glass front and wire stand on back. ''Basil'' is handwritten in ink on lower RHS; imprint on backing sheet: '' Sears Studios, Melbourne''Sears Studios, Melbourneperson, individual, basil watson

Framed formal portrait photograph of Basil Watson in decorative metal frame. Red velvet backing and hinged support stand. Photo by The Sears Studio, Melbourne. ''Basil'' handwritten in ink on lower RHS.The Sears Studio, Melbourneperson, individual, basil watson

Digital photograph showing the World War I and World War II war memorial gates and arch at Murtoa located beside the lake and the football ground. A figure of a solider stands atop the arch.war memorial, murtoa, arch, wwi, wwii, world war

This sculpture was completed by British artist Gale Pitt as part of a commission.Sculpture of an obstetrical examination in glazed white ceramic. In the scene, a woman lies on a bed in a gown, whilst a male doctor stands with his hands on her stomach. The doctor has a moustache and is wearing a suit.

Framed colour Photograph of a Vietcong soldier in black pyjamas kneeling in a field. His hands are tied behind his back and his eyes and mouth are taped shut. An armed soldier stands guard.photograph, prisoner of war

A large brass ships engine room telegraph on a stand. Written in red is Astern on the left hand side and written in black is Ahead on the right hand side. At the bottom there is a counter recording the speed of the propellerengine telegraph, ran, cerberus collection

This robe was worn by G.G.Ashworth, RAAF 0315515, when he was serving as a chaplain (3rd class) in Vietnam from 30/11/65 until 17/02/66. This robe was worn by G.G.Ashworth RAAF 0315515 when he was serving as a chaplain in Vietnam from 30/11/65-17/02/66Blue cotton fabric(gabardine) ecclesiastical robe with pleated back. Crossover lapels have four black plastic buttons. Robe is partly lined with black taffeta and has a stand-up collar.ecclesiastical robe, vietnam, 1965-1966, ashworth, chaplain, raaf, robe, priest

This is one of a set of 3 miniature oil paintings by the self-taught artist Alfred William Eustace (1820-1907). A.W. Eustace, an Australian artist, was born in Berkshire, England, where he was an assistant gamekeeper to the Earl of Craven at Ashdown Park. He migrated to Australia with his wife and children in 1851 and worked on the Ullina and Eldorado Runs on the Black Dog Creek at Chiltern, which was in excess of 50,000 acres of grazing land. A.W. Eustace was employed as a shepherd by Jason Withers and while tending his flocks in the solitude of the bush, Eustace turned his attention to painting and music to while away the long and weary hours. He endeavoured to capture the spirit of the bush and painted on board, canvas or tin plate, but as these materials were not always readily available he then started painting on large round eucalyptus leaves from the White and Red Box trees that grew around about him. He became known as the "Bush Artist." About 1856 he painted a small picture of the famous Woolshed goldrush and during the next few years became well known in North-East Victoria. John Sadlier, a police officer stationed at Beechworth said that Eustace painted 'some really exquisite scenes. He was of an easy-going dreamy temperament, a student of nature only, despising the works of men. Unfortunately his drawings were on eucalyptus leaves, the largest and roundest he could find and not on canvas, and no doubt have all perished long ago.' In 1876 the Melbourne Age newspaper reported, 'Eustace’s celebrated paintings on gum leaves are again attracting attention,…Mr Eustace is an elegant artist…he seems without effort to catch the colour and spirit of Australian scenery…' In 1864 A.W. Eustace held an Art Union in Albury, and again in 1884 in Ballarat. He exhibited at the Victorian Academy of Arts in 1877 and also held an exhibition of gum leaf paintings at Stevens Gallery, Melbourne in 1893. By 1896 he was receiving orders from heads of states in Europe, with his works acknowledged by Queen Victoria, Emperor Frederick of Germany and the Czar of Russia, as well as the Governors of New South Wales and Victoria. His paintings reflected his ability to paint the sky in his realistic style which is still noted by art critics of the day. A.W. Eustace was also a skilful taxidermist. The collection of birds and animals that can be seen at the Beechworth Museum are examples of his taxidermy skill. When not doing his work, painting or taxidermy, he regularly contributed letters and verse to the Chiltern newspaper, The Federal Standard. A book of verse in his hand writing was presented to The Athenaeum Trust by the Boadle family. In the 1870’s he became interested in spiritualism often being involved in lively debate at lectures and séances. Alfred William Eustace died in 1907 and is buried in the Chiltern New Cemetery with his wife Sarah and one of his daughters, Elizabeth. Miniature oil painting of a landscape, with creek in foreground and bush and hill behind, by A.W. Eustace, under glass, in original timber frame with beige matte and a twist wire stand. One of 3 miniatures. No signature visiblealfred eustace, chiltern, oil painting, landscape

This is one of a set of 3 miniature oil paintings by the self-taught artist Alfred William Eustace (1820-1907). A.W. Eustace, an Australian artist, was born in Berkshire, England, where he was an assistant gamekeeper to the Earl of Craven at Ashdown Park. He migrated to Australia with his wife and children in 1851 and worked on the Ullina and Eldorado Runs on the Black Dog Creek at Chiltern, which was in excess of 50,000 acres of grazing land. A.W. Eustace was employed as a shepherd by Jason Withers and while tending his flocks in the solitude of the bush, Eustace turned his attention to painting and music to while away the long and weary hours. He endeavoured to capture the spirit of the bush painting on board, canvas or tin plate, but as these materials were not always readily available he then started painting on large round eucalyptus leaves from the White and Red Box trees that grew around about him. About 1856 he painted a small picture of the famous Woolshed goldrush and during the next few years became well known in North-East Victoria. John Sadlier, a police officer stationed at Beechworth said that Eustace painted 'some really exquisite scenes. He was of an easy-going dreamy temperament, a student of nature only, despising the works of men. Unfortunately his drawings were on eucalyptus leaves, the largest and roundest he could find and not on canvas, and no doubt have all perished long ago.' In 1876 the Melbourne Age newspaper reported, 'Eustace’s celebrated paintings on gum leaves are again attracting attention,…Mr Eustace is an elegant artist…he seems without effort to catch the colour and spirit of Australian scenery…' In 1864 A.W. Eustace held an Art Union in Albury, and again in 1884 in Ballarat. He exhibited at the Victorian Academy of Arts in 1877 and also held an exhibition of gum leaf paintings at Stevens Gallery, Melbourne in 1893. By 1896 he was receiving orders from heads of states in Europe, with his works acknowledged by Queen Victoria, Emperor Frederick of Germany and the Czar of Russia, as well as the Governors of New South Wales and Victoria. His paintings reflected his ability to paint the sky in his realistic style which is still noted by art critics of the day. A.W. Eustace was also a skilful taxidermist. The collection of birds and animals that can be seen at the Beechworth Museum are examples of his taxidermy skill. When not doing his work, painting or taxidermy, he regularly contributed letters and verse to the Chiltern newspaper, The Federal Standard. A book of verse in his hand writing was presented to The Athenaeum Trust by the Boadle family. In the 1870’s he became interested in spiritualism often being involved in lively debate at lectures and séances. Alfred William Eustace died in 1907 and is buried in the Chiltern New Cemetery with his wife Sarah and one of his daughters, Elizabeth.Miniature oil painting of a landscape with creek and surrounding trees by A.W. Eustace, under glass, in original dark brown timber frame with beige matte and a twist wire stand. One of 3 miniatures. Sticker on back: 188 (original Registration number)alfred eustace, chiltern, oil, landscape

The bicycle is one of the last bicycles hand made and assembled by 'Mr. Rob' c1960 prior to the mass manufacture and overseas imports of 'built up' bicycles. On closing down in September 1999 'Mr Rob' presented this bicycle to the Nunawading Historical and another to the Victorian Museum.Boy's 26 inch bicycle fitted with Dunlop tyres, bell, mudguards, handgrips, leather seat, rear reflector and a ' faboati' coaster hub. Bicycle is supported by its rear wheel on a metal stand.on top of frame - 'Hand made special'|On front of angle frame - 'Rob's Special'|On rear of frame and on front stem - an emblem 'another Rob's Cycle Blackburn'|13817s - serial number.transport, bicycles

The Gervasoni farm at Yandoit Creek was selected in the 1860s by a coopertaive comprising Caro Gervasoni, Luigi Gervasoni, Ambrogio Invernizzi and Battista Nani.Alice Gervasoni stands in front of an old stone house in Yandoit Creek, in a paddock of stooked hay. The house was built by a partnership between Carlo Gervasoni, Luigi Gervasoni, Antonio Invernizzi and Battista Nani.alice gervasoni, luigi gervasoni, carlo gervasoni, battista nani, ambrogio invernizzi, hay, hay stook, stone house, drystone, farm, agriculture

Yields information about the Ballarat's tramcars in the mid 1960's before the white strip was extended under the dash canopy lighting.Black and white photograph of Ballarat No. 36 and a single truck car at the SEC's Depot Junction. No. 36 has the destination of Mt Pleasant, and a "Cook with Electricity" roof advertisement. A single truck stands behind.On the Rear in ink "Wendouree Pde, Ballarat 8/64" and a "L. Marshall-Wood Photograph" stamp on the rear.tramways, trams, wendouree parade, secv, depot junction, tram 36

The Victoria Cross is the highest military decoration awarded for “... most conspicuous bravery, or some daring or pre -eminent act of valour or self sacrifice, or extreme devotion to duty in the presence of the enemy” to members of the armed forces of Commonwealth countries. This item is part of a collection of items relating to Cpl Alexander Burton.VC No 384Two items Medal on wooden display stand, Medal hangs on red ribbon with the words: The Victoria Cross; on label at base. Information board gives details of the history of the Victoria Cross. The medal is a replica.Front: For Valour Back: COPYvc

Medium weight cardboard sheet with printed sheet pasted to one side, advertising Totally & Permanently Disabled Soldiers badge and that they should not be left to stand. Dark blue and red printing on white background.community services, tpi pensioners

Silver picture frame with tennis motif. Contains print on paper of women on a tennis court, wearing 19th Century fashions. Leather-covered wood stand. Materials: Silver/Metal, Wood, Leathertennis

The Kew Light Opera Company was formed in 1952, and mounted a number of musical and variety productions each year until it was subsumed in the "Q" Theatre Guild in 1957. A partial record of performances by the company includes: 1952 Florodora, 1953 The Cingalee - San Toy or The Emperor's Own, 1954 While the Sun Shines - A Country Girl - Our Miss Gibbs, 1955 The Toreador - The Arcadians, 1956 The Maid of the Mountains - Whiteoaks - Goodnight Vienna!, 1957 A Country Girl. Most of the Company's performances took place in the Kew Recreation Hall in Wellington Street, Kew. The scrapbook of annotated photographs, programmes, and newspaper reviews of which this item is a part was assembled by Marion Tilley, wardrobe mistress for, and performer in, productions by the Kew Light Opera Company and the "Q" Theatre Guild. It is significant as a remarkably complete document of theatre performances in Kew, Victoria during the 1950s and 1960s. The scrapbook, and the items individually catalogued within it, have artistic and aesthetic significance within the history of performing arts in Victoria in the middle of the 20th Century. They have social significance in that they reveal socio-cultural values and preoccupations during the period. The records also act as a history of arts activities in the Kew Recreation Hall and later in the Kew City Hall as entertainment and community arts and music precincts.Sepia toned photograph of Marion Tilley, one of the 'Fisher Folk' in the production. Marion Tilley was the creator of the scrapbook from which the photo is drawn. Here she stands at the end of the performance with a bouquet of flowers.marion tilley, kew light opera company, kew recreation hall -- wellington street -- kew (vic.), performing arts -- kew (vic.), theatre memorabilia

Colour photograph. Unofficial launch of the Shilling Fund, hosted at Chair of the Trust's house, Janet England. Janet England stands behind the cake wearing a black top, red jacket and a long necklace. charitable organisations, official events

In 1985, the portion of Puckapunyal Army Camp housing the Armoured School and Corps Museum underwent a major rebuild. The new facility named Hopkins Barracks was officially opened by HRH Prince Charles on 31 October 1985. Prince Charles, who was accompanied by his wife HRH Princess Diana, is Colonel in Chief of the Royal Australian Armoured Corps (RAAC). The Barracks is named to honour Major General R N L Hopkins who was instrumental in the development of the RAAC and is affectionally known as the ‘father of the Corps’.Part of collection of photographs of a rare event on the Australian military calendar, the opening of Hopkins Barracks Puckapunyal by HRH Prince Charles, Colonel-in-Chief of the Royal Australian Armoured Corps (RAAC) on 31 October 1985.Two colour photographs showing the parade offering the Royal Salute at the completion of the " Advance in Review Order " movement. Note ' This is the only occasion that regimental guidons are lowered. ' All ranks in the viewing stand salute.

Fred Ambler and family at Albert Mills Premier Land Agency building on the corner of Union and Sunbury Roads, c.1910. Fred had his carpenter and upholstery business on the ground level and his home above. (No.1) Premier Land Agency Building, was built in 1886-7 by Albert Mills, builder, at 122 Union Road, on the corner of Sunbury Crescent, opposite the Railway Station. Photo shows his wife and family. Alfred died in 1890 and the family moved. The Boroondara Standard in 1888 reported: "Splendid block of brick buildings reaching completion in Union Road adjacent to railway line – 2 storey. Frontage 120 feet for Premier Land Agency. Shops at Ground Level." A sepia coloured photograph of a two storey terrace building with 3 ladies and 2 children standing on the balcony. Downstairs, a gentleman stands outside the shopfront beside two prams. There is a child in one pram.albert mills premier land agency building, (mr) fred ambler, union road, carpenter, upholsterer, sunbury crescent

See picture of family history.Wooden wash stand on castors, with marble top, two wooden drawers, and decorative floral tiles. Inlaid decorative design on the wood, and brass handles on the drawers. Part of a 4 piece bedroom suite.bedroom suites, washstands