What device converts AC to DC? rectifier A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification, since it "straightens" the direction of current. The unit was used at Ballarat School of Mines in the Maths, Science and Physics Departments.Grey metal unit with Dials on the front and vents at the back. Handle for carrying. Two switches for turning on and off. Yellow sticker - SMB - with number 116071. Engraved on back - S.M.B.. Maths / Science / Physics Sticker on cord indicating inspection of unit - 13/04/2005. Tag Number - 032735alternating current, direct current, ac, dc, rectifier, electrical, ballarat school of mines, science, maths, physics

These organ pipes were used for Physics experiments at the Ballarat School of Mines. A series of brass blocks connectable with insertable pint, mounted on black panel on a varnished wood base konwn as a Post Office Box (Sreies Resistors).Serial Number 1941scientific instrument, ballarat school of mines, physics

Used in the Ballarat Institute of Advanced Education, Physics Department as a stand-alone unit or it could be connected to the Sharp Memorizer - 60 if one was available.Desk-top electric calculator with 16 digit electronic display; 2 memories;operations controlled by keyboard. Type: Sharp Compet 32, Model C5 - 32C Serial No. 912908With dymo tape labels: "1st YR"; "PHYSICS"; "PURCHASED 6/11/69" Gold sticker: "Edwards Sales and Service 42 3951"electric calculator, ballarat institute of advanced education, physics department

Any early acquisition y the Mount Helen Physics Department. Oscilloscope user assembled supplied by Dystrom Limited, Gloucestor, England, under the Heathkit brand. Grey ripple finish sheetmetal case, with ventilation slots. Leather strap carry handle. Specifications not attached. scientific instrument, ballarat school of mines, bill durant, physics

Used in Physics and Electrical Engineering laboratory experimentsPotentiometer, Type D-73-E in polished wood box with lift out circuit diagram inside the lid. Black top panel with terminal posts, switches and selector knobs.Black Dymon tape on lid "Ass.No. 50"scientific instrument, potentiometer, physics, electrical engineering, laboratory

Used in Physics and Electrical Engineering laboratory experiments.D.C. micro and milliammeter, 6 ranges: 100 microAmp; 500 microAmp; 1 milliAmp, 5 milliAmp, 10 milliAmp, 50 milliAmp. Semi-circular scale. In varnished wood case with hinged lid. Leather strap carry handle. Series No 5276 Type PC6scientific instrument, ammeter, electrical instrument, physics, electrical engineering, laboratory

This book was awarded to Amy Evelyn Bailey for first prize in Physics in the fifth form. Amy entered Ballarat College in January of 1885 at the age of 12. Parent/Guardian named in Registry as Ed Bailey residing in [Mt. Rowan?]. It is also noted in the Register that Amy came from Miss. [Keeps?] Ladies' School.During 1877 - 1891 Ballarat College accepted enrolments from female students. The school holds the original register of this period and notes that Amy Bailey entered the College at the age of 12. Presbyterian educators placed great value on a classical education matched with diligence in study. Book prizes were highly regarded and academic success admired. In the school’s early years prizes were ordered direct from London and had the school crest embossed in gold on the front or back cover. Many of the prizes given in early years were returned to the school to equip the Weatherly Library when it opened in 1936.Bound in blue calf with marble edging, gilt lettering and decoration on spine. Six raised bands on spine with gold decoration; gold writing on second compartment with red calf; College crest embossed on front cover; black and white frontise piece, end papers marbled, slight foxing on pages, 695 p. Book plate inside front cover: college crest, Physics/ Fifth Form/ First prize/ Awarded to/ Amy E. Bailey./ 1887amy-evelyn-bailey, ballarat-college, ed-bailey, miss.-[keeps?]-ladies'-college

Willgodt T. Odhner invented his very successful “pinwheel” four-function calculator mechanism in Russia in 1874, and his invention was cloned by numerous companies, resulting in dozens of similar models that remained in wide use for almost a century. Numbers are dialed into the sliding levers on the top part of the machine, and are added to the register visible in the carriage at the bottom when the large crank is turned. Shifting the carriage sideways allows multiplication through a sequence of addition operations; the two small cranks zero the registers. The design includes ingenious error-preventing interlocks between all the controls: should the operator fail to return a crank to its resting position, the other controls are frozen until this is corrected. A bell indicates calculations in the negative. Used in Ballarat Institute of Advanced Education (B.I.A.E) Physics department.Black, mechanical calculating machine. Metal. Hand-operated, with three hand-cranks. 10x10 rotor with 13 digit result. Ser. No. 29-286781.5 Black symotape on base front: "PHYSICS". Maker's identification on top surface. Supplier's label (metal, silver & blue) on back: "STOTT & HOARE Pty. Ltd. 171 William St. Melbourne C1 M1991". Stamped on rear panel: "MADE IN SWEDEN". Cast lettering on underside: "M-602 07".calculating machine, pinwheel, calculator, scientific instruments, stott & hoare pty ltd, physics, odhner, ballarat institute of advanced education

The item has come from the Ballarat School of Mines. It was possibly made at the school to demonstrate class processes - science and physics.Wooden box with Federal 240 volt meter and 3 fuse plugs. Appropriate wiring Federal on meterelectrical, fuses, ballarat school of mines, science, physics, demonstrate

This item has applications in teaching Physics and Chemistry - obtaining information about the atomic structure of the light-emitting substance. An optical instrument that employed a monochromatic light source, a prism (missing), and viewing lenses mounted in a tube that can be in any radial position with respect to the vertical axis of the prism. House in a polished timber carry box.Manufacturers' and suppliers names stamped on the vernier disc: "Made by W. & J. George Ltd, Birmingham, England" and "For H.B. SELBY & Co, SYDNEY & MELBOURNE. No 266"scientific instruments, surveying, microscope, physics, chemistry, atomic structure, spectroscope

This item was used at the Ballarat School of Mines.It had applications in teaching physics and chemistry - obtaining information about the atomic structure of the light-emitting substance.Spectrometer in wooden case. An optical instrument that employs a monochromatic light source, a prism (missing) and viewing lenses.Serial number: 1667 Manufacturer's and Supplier's namesscientific instrument, ballarat school of mines, labororatory, physics, optical measurement, chemistry, structure of substance

Used in Physics Laboratory at Ballarat School of Mines for calculating/confirming relative density (or the specific gravity) of given metal samples. This would have been in Elementary physics experiments.A set of seven 2-cm cubes, individually numbered 1 - 7, in a hinged-lid storage box with black surface finish.Number and metal of cubes: 1) Brass; 2) Lead; 3) Steel; 4) Copper; 5) Aluminium; 6) ? a ferrous alloy; 7) ? a ferrous alloy.physics, laboratory, ballarat school of mines, relative density, specific gravity, metal, elementary physics, brass, lead, steel, copper, aluminium, ferrous alloy