Stages in development of optical glass. Very early experiments by E.J. Hartung. Ernst Johannes Hartung was a chemist and astronomer. Educated at the University of Melbourne (BSc 1913, DSc 1919), he became lecturer in 1919, associate professor in 1924, and succeeded Rivett as chair of chemistry in 1928, remaining in this position until 1953. Hartung?s lecturing style surged with enthusiasm and he employed the use of screen projections to demonstrate chemical phenomena to large undergraduate classes. In 1935 he recorded Brownian movement in colloidal solutions on 35 mm cinefilm, which was later copied onto 16 mm film for the Eastman Kodak Co. World Science Library. This can be viewed in the Chemistry laboratory. He researched the photo decomposition of silver halides, and was awarded the David Syme Prize in 1926. He devoted time to the design and construction of a large, new chemistry building for the School of Chemistry (built 1938?1939). During World War II he was approached by Professor Thomas Laby, chairman of the Optical Munitions Panel, to chair the advisory committee on optical materials, to produce high quality optical glass in Australia. This was successful, with large-scale production achieved within ten months at a reasonable cost. Hartung served three terms as general President of the (Royal) Australian Chemical Institute, was an ex-officio councillor of the Council for Scientific and Industrial Research, and a Trustee of the Museum of Applied Science (now part of Museum Victoria).Optical glass

Large horseshoe magnet, given to young E.J. Hartung. by an uncle. Ernst Johannes Hartung was a chemist and astronomer. Educated at the University of Melbourne (BSc 1913, DSc 1919), he became lecturer in 1919, associate professor in 1924, and succeeded Rivett as chair of chemistry in 1928, remaining in this position until 1953. Hartung?s lecturing style surged with enthusiasm and he employed the use of screen projections to demonstrate chemical phenomena to large undergraduate classes. In 1935 he recorded Brownian movement in colloidal solutions on 35 mm cinefilm, which was later copied onto 16 mm film for the Eastman Kodak Co. World Science Library. This can be viewed in the Chemistry laboratory. He researched the photo decomposition of silver halides, and was awarded the David Syme Prize in 1926. He devoted time to the design and construction of a large, new chemistry building for the School of Chemistry (built 1938?1939). During World War II he was approached by Professor Thomas Laby, chairman of the Optical Munitions Panel, to chair the advisory committee on optical materials, to produce high quality optical glass in Australia. This was successful, with large-scale production achieved within ten months at a reasonable cost. Hartung served three terms as general President of the (Royal) Australian Chemical Institute, was an ex-officio councillor of the Council for Scientific and Industrial Research, and a Trustee of the Museum of Applied Science (now part of Museum Victoria).Horseshoe Magnet �

Ernst Johannes Hartung was a chemist and astronomer. Educated at the University of Melbourne (BSc 1913, DSc 1919), he became lecturer in 1919, associate professor in 1924, and succeeded Rivett as chair of chemistry in 1928, remaining in this position until 1953. Hartung?s lecturing style surged with enthusiasm and he employed the use of screen projections to demonstrate chemical phenomena to large undergraduate classes. In 1935 he recorded Brownian movement in colloidal solutions on 35 mm cinefilm, which was later copied onto 16 mm film for the Eastman Kodak Co. World Science Library. This can be viewed in the Chemistry laboratory. He researched the photo decomposition of silver halides, and was awarded the David Syme Prize in 1926. He devoted time to the design and construction of a large, new chemistry building for the School of Chemistry (built 1938?1939). During World War II he was approached by Professor Thomas Laby, chairman of the Optical Munitions Panel, to chair the advisory committee on optical materials, to produce high quality optical glass in Australia. This was successful, with large-scale production achieved within ten months at a reasonable cost. Hartung served three terms as general President of the (Royal) Australian Chemical Institute, was an ex-officio councillor of the Council for Scientific and Industrial Research, and a Trustee of the Museum of Applied Science (now part of Museum Victoria).Set of analytic weights, used by E.J.H. in most of his work

An original Kerr-Grant Microbalance, modified by E.J.Hartung This balance was invented in the chemistry department by Bertram Dillon Steele, later first Professor of Chemistry at the University of Queensland 1910-1930, in collaboration with Professor Kerr Grant, Physics. The design was widely used by other chemists, including Masson's mentor, Professor Ramsay, working in London on newly discovered rare gases (especially Radon), and Professor Hartung in Melbourne, investigating the chemistry of the decomposition of silver salts in photographic processes. The principle of the microbalance was to measure the change in density of a gas by the shift in the balancing beam due to a change in pressure of the gas in the balance case. The quartz balancing beam was made by Bertram Steele who was particularly skilled in glassblowing. A quartz beam is the beam of the Aston microbalance based on the Steele/Grant instrument, and described by F.W. Aston, the inventor of the mass spectrometer. The bulb at one end of the beam contained a fixed amount of air, so that a change in the pressure of gas in the balance case changed the buoyancy of the beam, yielding a displacement in the beam which could be measured. By this means, differences in weight of about 10 nanogram could be measured, in amounts of up to 0.1 gram. Such differences are significant the increase in weight of a metal sample due to surface oxidation (Steele's interest) in the weight loss due to radioactive decay of Radium (Ramsay's work), and in the estimates of density change due to the isotopic distribution of Neon (Aston). Ernst Johannes Hartung was a chemist and astronomer. Educated at the University of Melbourne (BSc 1913, DSc 1919), he became lecturer in 1919, associate professor in 1924, and succeeded Rivett as chair of chemistry in 1928, remaining in this position until 1953. Hartung?s lecturing style surged with enthusiasm and he employed the use of screen projections to demonstrate chemical phenomena to large undergraduate classes. In 1935 he recorded Brownian movement in colloidal solutions on 35 mm cinefilm, which was later copied onto 16 mm film for the Eastman Kodak Co. World Science Library. This can be viewed in the Chemistry laboratory. He researched the photo decomposition of silver halides, and was awarded the David Syme Prize in 1926. He devoted time to the design and construction of a large, new chemistry building for the School of Chemistry (built 1938?1939). During World War II he was approached by Professor Thomas Laby, chairman of the Optical Munitions Panel, to chair the advisory committee on optical materials, to produce high quality optical glass in Australia. This was successful, with large-scale production achieved within ten months at a reasonable cost. Hartung served three terms as general President of the (Royal) Australian Chemical Institute, was an ex-officio councillor of the Council for Scientific and Industrial Research, and a Trustee of the Museum of Applied Science (now part of Museum Victoria).An original Kerr-Grant Microbalance, modified by E.J. Hartung.

This item represents a period in time when there was the start by manufacturing industry for targeting the medium to lower socio and economic strata of the purchasing public. It was the beginning of cheaper mass produced items for the non professional (photographer in this instance) recreational minded public. The availability of low cost items was required by an ever increasing population hungering for the "do it yourself" amateur.This camera was owned by Margaret (Peg) Shefford nee Turner, who retired to Mount Beauty in the mid 1980s. The camera was purchased in 1920 and used up to the 1940's when her her daughter, Midge Clooney used it. When the Shefford family emigrated from England to Australia (1953), it was used to take photos of the ship voyage.This item is a Campfire Box Brownie. Model "F". It is a black vinyl covered tin box shell. It has a short leather hand strap (110mm) (stamped "BROWNIE") on the top side of the box, fastened by a metal stud at each end. There are two clasps holding the front and rear sides. Viewer (photo frame number) and lens (apertures) are on opposite sides.Stamped within a circular section on the back section is "No 2 BROWNIE" underneath,"MODEL F" in smaller letters "MADE IN CANADA BY CANADIAN KODAK Co., Limited, TORONTO, ONT". a smaller circle within has "USE KODAK FILM No_ 120"portable camera, photography, hobby, low cost camera

Brownie Six-16 camera by Eastman Kodak Company, black box camera with vinyl covering, assorted view finders & lenses.Made in Canada by Canadian Kodak Co Limited Toronto Ont.photography, cameras-still, brownie

The Mayoral Ball is long held tradition, usually held in the first few months of a new mayors election with proceeds going to a local charity. The 1972 Mayoral Charity Dinner Ball was held at the Bendigo City Town Hall with funds donated to St Luke's Toddlers' Home in White Hills. Catering was provided by the Copper Pot Restaurant, 2 Howard Place, Bendigo and the Frank Charles Orchestra provided the music. 4 minute 24 second black and white 16 mm film in original film can, labelled. 0340a; Label (no longer affixed to can) 0340b Film Can 0340c; Film Reel 0340d; 16mm filmLabel; A / BCV - TV / PRODUCTION / Subject The Mayoral Ball - 1972 / Duration 4 min 24 sec / Bendigo & Central Victoria Telecasters Ltd / Lily Street, Bendigo, 3550 / Phone (ill)3-0584Film Can Lid; EASTMAN KODAK COMPANY Film Reel; tuscan / HUNDRED FEET / Made in Australia by / Australian Reel Co. / Pty Ltd city of bendigo mayor, city of bendigo town hall, city of bendigo events, mayoral ball, mayor elliott, mayoress elliott, elliott collection