A ballistic galvonometer in black sealed metal enclosure, of cylindrical shape on a circular base, with levelling feet. scientific instrument, galvonometer, ballistic galvanometer

Galvonometer in an upright cylindrical metal case on a circular base, with levelling feet.scientific instrument, galvanometer, ballistic galvanometer

AC and DC volmeter. 50-150 volt, moving iron. Analogue display, non-linear semi-circular lacquired wood case. Black metal hinged lid for scale window. User instructions inside lid. Three terminal posts, and a contactor, at top end. Leather carry strap top end. Registered trade Mark "Megger" Serial number 137872scientific instrument, voltmeter, evershed and vignoles

This item was acquired by the Ballarat School of Mines Electrical Engineering department for use in electric power laboratory as a source of D.C., and also for instructional purposes. This central mercury arc element was located in a cabinet with transparent side panels, and equipped with the required electric accessories, to be a self-contained stand-alone unit. Head of the Electrical Engineering Department at the time was John M. Sutherland.Mercury arc rectifier, 3-phase input. Constructed of blown glass, and complicated configuration: the central inverted truncated cone is provided with 3 large diameter "horns' and four smaller ones. Each horn has electrical connection to outside, some have side horns. Approximately half a cup of free mercury inside the glass complex. No. 33369scientific instrument, x-ray, x-ray tube, xray, john m. sutherland, electrical engineering, ballarat school of mines

This beam balance was used at the Ballarat School of Mines Beam balance housed in a glass-sided wooden cabinet. Completer, but without balance masses.scientific instrument, balance, scales, physics laboratory, chemistry laboratory, beam balance

This beam balance was used at the Ballarat School of Mines.Beam balance on a black marble base, in a polished wood and glass sided cabinet with levelling feet. Complete but without balance masses.scientific instrument, balance, scales

scientific instrument, wave propagation, optics

DEFINITION microfarad Posted by: Margaret Rouse WhatIs.com Contributor(s): Kenda, Jack Clements The microfarad (symbolized µF) is a unit of capacitance, equivalent to 0.000001 (10 to the -6th power) farad. The microfarad is a moderate unit of capacitance. In utility alternating-current (AC) and audio-frequency (AF) circuits, capacitors with values on the order of 1 µF or more are common. At radio frequencies (RF), a smaller unit, the picofarad (pF), is often used. This unit is equal to .000000000001 (10^-12) µF. In RF scenarios, capacitances range from about 1 pF to 1,000 pF in tuned circuits, and from about 0.001 µF to 0.1 µF for blocking and bypassing. At audio frequencies (AF), capacitances range from about 0.1 µF to 100 µF. In power-supply filters, capacitances can be as high as 10,000 µF. Capacitor, 1/3 M.F.D. (microfarad) within wooden insulating box. Two terminal posts set in an insulating box. Maker's name and place 1/3 M.F.D No. 34402scientific instrument, capacitor, electrical engineering, laboratory

Balancing resistances in a varnished timber box. Black-painted metal lid holds four decade selector switches and three terminal posts. Lid attached with 6 knirled knobs. Instrument type 1370.Serial Number 142.scientific instrument, decade resistance box

A glass prism of equilateral triangular shape mounted by a ball-joint to a vertical brass stand and brass base. scientific instrument, prism, optics

Most were used in various capacities at Ballarat School of Mines or University of Ballarat.Assorted lamps including Edison Carbon filament light bulbs and other special purpose lamps, .1-3) Robertson, pear shaped 220 V 16, carbon filament? bayonet light bulb with 'nipple'. .4) Ediswan, standard shaped, 928, carbon filament? bayonet light bulb with 'nipple'. .5) (B in a circle) 280 V 32 oo1A, pear shaped, carbon filament? bayonet light bulb with 'nipple'. .6-7) Crompton? standard shaped, carbon filament? bayonet light bulb. Clear glass with an amber tint. .8) 230-240 V 40 W, pear shaped, wire filament bayonet light bulb. .9-10) Osram standard shaped, heavy spiral and disc electrodes, bayonet light bulb. (The disc is loose in 10) .11 a&b) Osram black glass, large standard shaped, 230-240 V 125 W, bayonet light bulb. .12) Philips tubular shaped projector lamp with instruction leaflet. .13) Philips tubular shaped projector lamp with instruction leaflet in original box. .14) EH JA 12 V 55 W small projector lamp. .15) Large special purpose, standard shaped, frosted bayonet light bulb. .16) Siemens, standard shaped, modern Edison screw light bulb. .17) Philips, standard shaped, modern Edison screw, frosted light bulb. .18) Crompton, gas filled 240 V 75 W, standard shaped, bayonet frosted light bulb in original box. .19) Crompton, gas filled 230 V 300 W. standard shaped, large modern Edison screw light bulb. .20) Probably an extension cord with a bayonet fitting at one end connected by a twisted cord of two fabric covered wires to a large socket. This socket has a copper Edison screw inner, surrounded by a ceramic tube and covered with a copper housing. The housing is cracked in two places.Some have makers brand and voltage and wattage stamped onto the glass.scientific instrument, ballarat school of mines, globes, edison, lamps, light bulbs, bayonet

Milliammeter in wooden case, with leather range 100-500ma. Semi-circular scale with mirror-backed pointer.Model 155m Serial Number 38783scientific instrument, ballarat school of mines

A.C. Voltmeter, 150-600 volts non liner, semicircular scale ventilation holes. One termnal post on each side panel. Maker's name plate on top face below scale windo. Adjacent: spring-loaded contact button. Model 155. Serial Number 42339scientific instrument, ballarat school of mines, weston electrical instrument co

D.C. Voltmeter 180-270 volt range. Black cylindrical shape, with partly chrome plated front cover and simi-circular glass window. Pointer indicator, semi-circular scale. This panel mount instrument is attached to a crudely varnished wooded stand for bench-top use. Serial Number 2172Vscientific instrument, ballarat school of mines, voltmeter

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

A spherical glass vessel with two principles electrodes mounted inside opposing cylindrical extensions. A third mounted in an offset extension. A fourth electrical connection in a branched extension, perpendicular to main axis. scientific instrument, x-ray tube, xray, physics

A glass cylindar with a spherical enlargement in the middle part, with metal end attachments. ONe end connections for emitter filament heating current. Other end - attachmentes for electron target, with some provisin for air/gas flow. Paper label on one end, tabular voltages, currents, etc. Serial Number 243738scientific instrument, electron valve, x-ray

Eight various valves. .1) Matchlett Rectifying Valve Type ML-IE, 11.7 AMP@10v, oil immersion .2) Mullard TY2-125, Serial Number 4878./3 26UJ 5U4GB Miniwatt 980 .4) Electonic Comany New Jersey ELCGH-1/5 Collidge Tube, G.E./GMINNIWATT955 6x5GTscientific instrument, valves, mullard, rectyfying valve, electrons co, eimac, general electic, lamp, machlett laboratories inc., miniwatt

The Michelson Interferometer, sotred in a polished timber carry case. An optical isntrument, incorporating mirrors, lens, and adjusting mechanisms, all mounted on a heavy and solod cast metal base. Instruction manual available. scientific instrument, bellingham and stanley ltd, interferometer

This item was used at the Ballarat School of Mines during Physics lectures. Wave demonstration apparatus in a wooden frame for benchtop use. scientific instrument, wave demonstraton apparatus, ballarat school of mines, h.b. silberberg & co.

Two pan balance.scientific instrument, balance

Dip circle apparatus contained in a glass-sided vertical wood cabinet, which can be rotated around a vertical axis through 360 degrees. Fully graduated circular scales and levelling screws in the base. Instructions for use available. scientific instrument, dip circle apparatus

A.C. Bridge MK 7A. A black instrument panel with controls, connectors and a 0-5- microAmpere DC indicator located on thetop face, and the electrical components located on the underside. No mounting frames, hence components exposed and vulnerable. scientific instrument, barlow and kelly, a.c. bridge

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 Electrical Engineering and experimental set-ups in the laboratories,Voltmeter with the range 180-320 volts.scientific instrument, ballarat school of mines, voltmeter, electrical engineering, experiments

Four sound boxes (or resonators) made of thin varnished wood panelling.scientific instrument, resonators, sound boxes

Students potentiometer type D-73-A. Black top panel with terminal posts, elector knobs and switches. In a polished wood box wit lift-off lid. Circuit diagram inside lid. Serial Number 3008scientific instrument, potentiometer, physics, electrical engineering, laboratory

An anemometer is intended for determining velocity distribution over an area or in a boundary layer. This item was purchased by Mechanical Engineering upon the request of Dr Len Cubitt, to determine wind speed at various heights above the ground. Investigation related to wind energy harnessing projects, including that undertaken by MARS Industries in Ballarat. The 6-cup anemometer had a marked superiority in tests over the 3-cup anemometer and also had lower starting speeds.Anemometer in a case complete with mounting blocks, but without electric leads for connecting the black finished wood case which also incorporates pulse counters and connections for power supply and for other logging instruments. Serial Number AM1-6-8875 Name Plate on lid between clasps. 'RIMCO" RAUCHFUSS INST & STAFF Pty Ltd 12 Monomeath Drive, Mitcham, Vic. 3132" scientific instrument, anemometer, len cubitt, mechanical engineering, energy harnessing projects, starting speeds