A Fresnel lens is a type of composite compact lens developed by the French physicist Augustin-Jean Fresnel (1788–1827) for use primarily in lighthouses.  Made from high-quality glass Fresnel lenses were used originally in lighthouses and later for many other applications They were later being used for automobile headlamps, brake, parking, and turn signal lenses, and many other applications. Fresnel lenses used in lighthouses were considered state of the art from the late 19th through to the middle of the 20th century. The subject item is a Fresnel replacement lens used in a ships navigation light. For lighthouses, these lenses have now been replaced with much less expensive and more durable aerobeacons, which themselves often contain plastic Fresnel lenses. The lens design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. The simpler dioptric (purely refractive) form of the lens was first proposed by Count Buffon and independently reinvented by Fresnel. The catadioptric form of the lens, entirely invented by Fresnel, has outer elements that use total internal reflection as well as refraction; it can capture more oblique light from a light source making the light visible from greater distances.The subject item at this time cannot be associated with a historical event, person or place, provenance is unknown, the item is a replacement for a ships navigation light and it is believed to have been produced before 1950.Fresnel glass replacement lens for a navigation side lamp of a ship. Nonewarrnambool, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, fresnel lens, maritime light, ships navigation light, augustin-jean fresnel, lighthouse lenses, lighthouse, navigation, warning light

Side, with nine badges - Possibly Pre Fed Artillery Corpsheadgear, pre fed, army

Wilkinson short 6" blade double sided.. SN2833 / 01army

Weizelar Optical Sight (left side of action) mounted on Maximequipment

Construction of Gas&Fuel headquarters. Side view of the finished building.Fujibuildings, gas company, gas & fuel bendigo

Construction of Gas&Fuel headquarters. Side view of the finished building.Fujibuildings, gas company, gas & fuel bendigo

Bendigo creek. Deep excavation at both sides of water channel.Kodakbendigo, waterworks, bendigo creek

Photo of the carton box described at 11518.396 with one side opened.Kodakbusiness, retail, gas and fuel

back row: Amy (trainer), pamperin, jackson, Sinclair (Secretary) , mcnaughton, mcmurray, Allan (trainer), middle row: fitzgerald, sampson, brown, anderson, pash, knox, Keating front row: hill, franklin, clelan, mcgee (Captain), hutchinson, clark, mcdonaldCapstan Cigarettes photo of Port Melbourne Football side, 1910Received from Port Melbourne Library, 17.7.78 Also surnames of players in pencilsport - australian rules football, keating, amy, pamperin, jackson, sinclair, mcnaughton, mcmurray, allan, fitzgerald, sampson, brown, anderson, pash, knox, hill, franklin, clelan, mcgee, hutchinson, clark, mcdonald

Box of matches issued and used to light burning fuses. Box is brown on top and bottom, sides have lightning strips. matches, vietnam war, fuse

Round clear glass bottle with text and logo embossed on side.'A.C.PARKIN' Logo of Pegasus on winged horse. 'MELBOURNE'.

The first Annual Church Service of Cornish College. Held at 7.30 pm on Wednesday 21 March 2012 at High Street Uniting Church, FrankstonThe Annual Church Service is a time for the staff, students and their families and friends to come together for Worship. The inaugural service was led by the Chairperson of the College Council Reverend Dr Robert Johnson at his parish church in FrankstonAn A4 sheet folded to A5, printed in colour on both sides.cornish_college_inaugural_year, church service, rev dr robert johnson

White china milk jug with swirled sides and floral decoration.domestic equipment, food consumption, jugs

Photograph. Red No.30 tourist tram. Advertising for 3BO on side.tramways, history, talking trams

Aluminium egg separator with embossed floral pattern around sides.Rgd No 534385domestic equipment, food preparation, kitchen

White china chamber pot with green Chrysanthemums on sides and handle.Royal Semi Porcelain Chrysanthemum Wedgewood & Co Ltd Englanddomestic equipment, ablutions, chamber pot

Slide.Bendigo Show. Side show alley-'the mission impossible show'.slide, bendigo, bendigo show., bendigo show.

Signature Joseph A Scovell was a Beechworth Builder 1907Object removed from Stanley Athenaeum internal front swinging doors when Greg Owen from Period Restorations worked on the Athenaeum building. Weatherboards had been nailed over the window spaces at the top of the doors, this had then been covered with painted masonite board.Wooden weatherboard painted on one side, rough out on the reverseSignature in pencil Joseph A Scovell 1907

Signature Joseph A Scovell was a Beechworth Builder 1907Object removed from Stanley Athenaeum internal front swinging doors when Greg Owen from Period Restorations worked on the Athenaeum building. Weatherboards had been nailed over the window spaces at the top of the doors, this had then been covered with painted masonite board.Wooden weatherboard painted on one side, rough out on the reverseSignature in pencil Joseph A Scovell 1907

Notice to St Kilda burgesses and ratepayers of proposed public works and a loan for the funding them, dated 17 May 1869 Photocopy of 3-page foolscap document, printed single sidedst kilda - history, borough of st kilda, 19th century

Green coloured card printed in black on one side onlyThe Zelda Social Club will hold a Social Gathering on Wednesday ... 1906. At the Prince of Wales Hall, Duke Street, Balaclava, Op. Tram Terminus. Under the strict supervision of Mr. C TROY, Hon Secretary. Visitors only admitted by invitation of Club Members. Recommended by Mr. .....zenda social club, prince of wales hall, balaclava, 20th century, st kilda - history

Christian Brothers College, St Kilda, was established in 1878 as a private secondary college for boys. Since 2021, following the closure of its sister school for girls, Presentation College Windsor, it has operated as a co-educational school called St Mary's College.Pale blue square card with black printing on one sidePrinted on face: Christian Brothers' College, St. Kilda, ANNUAL CONCERT, St Kilda Town Hall, Tuesday, Dec. 17, 1918. Proceeds in aid of Christian Brothers' Training College Jubilee Fund. His Grace the Most Rev. Dr. Mannix will Preside. Row J 81 ADMIT ONE This part to be given up at the Door.st kilda town hall, st kilda schools, christian brothers college, christian brothers training college, 1918, 20th century, dr mannix, christian brothers

For St Kilda Patriotic Carnival at Luna Park to aid Australian Comforts Fund and Red Cross FundPink/discoloured or buff paper, printed one side in bluewwi fund-raising, luna park, st kilda carnivals, australian comforts fund, victorian red cross

An invitation to afternoon tea with the Acting Mayoress, Mrs Nahum Barnet, and the St Kilda Patriotic Workers at the St Kilda Town Hall on 23 April. The year is not identified but is almost certainly 1917. Mr Nahum Barnet was the brother of Cr Henry Florian Barnet, who was the Mayor of St Kilda in 1916-17. His wife served as acting Mayoress because the Mayor was unmarried.Sepia (formerly white) card printed in blue on one sidest kilda mayoral function, st kilda patriotic workers, anzac day, wwi fund-raising

For public meeting of Elwood and South St Kilda Progress Association on land and housing reform. The full date is not given. The Association met on Tuesday nights in the Methodist School Room, Elwood in the early - mid 20th century.White paper, discoloured by age,, printed one side in blackelwood and south st kilda progress association, housing reform

Full date of event not given. It may refer to the St Kilda Carnival of 6-13 December 1919 which raised funds for the Returned Nurses Sailors and Soldiers Memorial Hall and Seaside Club Fund. White paper discoloured with age, printed on one side in blue.luna park, st kilda carnivals

Advertising an Anzac Day service at the St Kilda War Memorial on 25 April 1925 and a memorial service at St Kilda Town Hall the next dayWhite paper, discoloured with age, printed in blue on one sideanzac day, st kilda mayoral function, st kilda war memorial

Uncompleted form for a legal agreement between the Committee of Management of the St Kilda Oriental Carnival, 1929 and a showman participating in the carnival over the period 30 March to 6 April 1929.Single sheet of yellow paper printed in black on one sidest kilda carnivals, st kilda oriental carnival

Uncompleted form for legal agreement between the Committee of Management of the St Kilda Mardi Gras Carnival, 1928 and any showman participating in the carnival over the period 25 February to 3 March 1928.Single sheet of yellow paper printed in black on both sides.st kilda carnivals, st kilda mardis gras carnival