PIRA 9C40.00 OTHER

DCS #DEMONSTRATIONREFERENCEABSTRACT
9C40.00Other
9C40.10cheese dish demonstration collectionAJP 42(10),914Eighteen demonstrations of the "string and sticky tape" style that use a cheese dish.
9C40.15microspheresAJP 34(12),xviSmall hollow glass bubbles ranging from 10 to 270 microns.
9C40.15steam trap spheresAJP 31(12),xivUse floats for steam traps in electrostatics demos. Available from 1 1/2" to 6" diameter.
9C40.15plastic balls, hemispheres,etcAJP 29(8),ivSources for plastic balls, hemispheres, and styrofoam balls (1961).
9C40.15hollow stainless ballsAJP 31(9),xiA source of hollow stainless balls from 5/8" to 10" diameter.
9C40.17labeling cablesAJP 34(8),iiiUse ordinary white paper and heat shrink tubing.
9C40.17stranded tungsten wireAJP 29(11),xivStranded tungsten wire from GE for use in vacuum metalizing.
9C40.19spinning thin metalAJP 34(5),ixUse a teflon plug at the end of a spinning tool.
9C40.19bluing steel by heat treatmentAJP 34(5),xForm a good corrosion resistant surface by heating to 299 C and quenching in mineral oil.
9C40.20constant torque devicesAJP 30(11),xviConstant torque devices for providing constant tension to strings and cords in recording instruments.
9C40.20springs for harmonic motionAJP 31(11),xvWind springs from #22 piano wire 1 cm diameter, 5-6 cm long for spring constants about 100,000 dyn/cm. Source: Hunter Springs, also make constant force springs.
9C40.20modified mass hangerAJP 40(12),1876The masses don't fall off this mass hanger.
9C40.20hooked weightsAJP 30(4),310How to make small hooked weights out of lead.
9C40.22graphite-woven furnace fabricAJP 29(12),xviGraphite cloth heating elements can release 1 Kw / sq in. Sources for the cloth and furnaces.
9C40.23cercor ceramic structureAJP 29(11),xiiiA thin walled cellular ceramic from Corning Glass that withstands 1000 C and great thermal shock.
9C40.23braided glass sleevingAJP 30(10),xvThis sleeving is suitable for insulating wires in high vacuum systems.
9C40.24soft solder to tungsten wireAJP 34(10),xviTo soft solder a tungsten wire, first properly tin it.
9C40.24soldering refractory metalsAJP 38(6),776A method for coating tungsten, molybdenum, and tantalum with brazing metal before soldering with rosin core solder.
9C40.25plastic drive beltsAJP 34(12),xvA method for joining the ends of vinyl or Tygon tubing to make endless belts.
9C40.25modification of tesla leak testerAJP 36(3),xAdd a pushbutton switch on the side of the probe.
9C40.25polyester film beltsAJP 34(5),ixMake an endless belt of mylar by stretching a cut circle. Also, splicing various polymers.
9C40.26heat shrink tubingAJP 29(9),xviiiInsulating tubing that shrinks on heating.
9C40.26teflon spagetti tubingAJP 30(7),viDescribes thinwall teflon tubing.
9C40.28nylon fastenersAJP 30(5),xSource of fasteners made from nylon 6, a special cold flow plastic.
9C40.30flexible rubber magnetAJP 30(1),xviiQuarter inch flexible magnet supports 40 g/inch.
9C40.30ceramic ring magnetsAJP 29(8),iiiSource of ceramic ring magnets (1961).
9C40.33gallium-indium eutecticAJP 28(8),x75% gallium - 25% indium (by weight) freezes at 15.5 C and wets many semiconductor surfaces making low-resistance ohmic contact.
9C40.35electroplating tapeAJP 34(7),viiiScotch brand pressure sensitive tape for electroplating works well for masking surfaces to be etched.
9C40.35liquid insulating tapeAJP 30(8),viPaint this stuff on instead of using tape.
9C40.35vinyl foam tapeAJP 35(2),xixFoam tape with adhesive on both sides is more compliant than double sided tape.
9C40.36epoxy to steel ballsAJP 35(7),ivClean steel ball bearings before using epoxy to fasten on a hook.
9C40.36conducting epoxyAJP 30(5),xElectrically conducting epoxy announcement.
9C40.36modified epoxy resinsAJP 31(2),xiRecipes for sand loaded epoxy, Cab-O-Sil loaded with note about stirring to destroy thixotropic property.
9C40.36silicone rubber adhesivesAJP 30(7),viSome data on RTV.
9C40.36plexiglass adhesivesAJP 31(1),xivA three component plexiglass cement, or moisten with chloroform and clamp.
9C40.36more gluesAJP 31(4),xivRez-n-glue for styrofoam. 3M EC-1368 thermosetting adhesive. 3M AF-42 can be cut to shape, clamped, and cured.
9C40.36conducting epoxy cementAJP 29(9),xviiiSilver filled epoxy cements, source and data.
9C40.36epoxy seals in GM tube constructionAJP 29(12),xvAnyone can make GM tubes with this simple method.
9C40.36epoxy dispenserAJP 34(12),xviMix epoxy and catalyst in a disposable syringe and then dispense.
9C40.37white lubercating compoundAJP 30(8),viA compound that lubricates to 1100 C and is a grease from -40 to 140 C.
9C40.38high temperature paintAJP 30(1),xviiiAn aluminum pigment paint for use between 500 and 1000 F.
9C40.38pressure sensitive paintAJP 30(1),xviiiPressure sensitive electrically conductive paint can be used between conducting surfaces to make pressure transducers.
9C40.40spandle for glassblowingAJP 30(4),xiiiA tool designed to simplify straight butt, T and V joint seals, and joining capillaries.
9C40.40nonwetting glass surfaceAJP 35(7),ivL-45, a silicone fluid from Union Carbide, makes glass nonwetting to aqueous solutions.
9C40.40polish for acrylic and aluminumAJP 29(12),xviX-109 polish (Chem-X Inc.) works well on plastics.
9C40.40low radioactivity glassAJP 28(8),xCorning Glass has a low radioactivity glass available in early 1961.
9C40.40low temperature solder glassesAJP 30(2),xvSome data on Schott solder glasses.
9C40.40fused quartz productsAJP 30(6),viFused quartz springs, pans, fibers, and other products are available from the Worden Laboratory (1962).
9C40.40IR optical materials reportAJP 28(7),xiiiA report listing the optical and physical properties of fifty materials for use in IR optics.
9C40.40large glass tube cutterS-3hLoop a wire around a glass tube, heat it red hot electrically, pour on cold water.
9C40.41dry ice chestAJP 32(4),xviLine a plywood chest with 4" of styrofoam.
9C40.41dry ice from fire extinguisherAJP 34(12),xvDischarge a fire extinguisher into a space covered with a towel.
9C40.41foam liquid nitrogen containerAJP 33(12),1090Use a large foam bowl for a cheap unbreakable container.
9C40.45epoxy resin leak sealantAJP 34(3),xxxThe Varian Associates "Torr-Seal".
9C40.45transparent electroconductive coatinAJP 28(7),xivPointer to Rev.Sci.Instr.31,344(1960). Apply a thin oxide film to lead glass with a resistance of 350 ohms/square, light transmittance of 75%.
9C40.50radioactive sourceAJP 31(5),362Irradiate sodium iodate 2hrs to get a radioisotope with a half-life of 25 min.
9C40.60determining EFLAJP 42(3),254A simple string method for determining the equivalent focal length of a lens.
9C40.60making curved slitsAJP 43(12),1111How to make slits for a double-prism non dispersive premonochromator.
9C40.60mobile optical tableAJP 44(3),310A 3' x 4' aluminum plate with 2" hole spacing.
9C40.60micropositionersAJP 29(4),xivThere are micropositioners available for optics.
9C40.60making high quality pinholesAJP 49(1),88A short discharge from a pointed to a rounded electrode through a thin metal foil produces some nice pinholes.
9C40.60making spatial filtersAJP 35(5),xA spark from a tesla coil makes a hole in carbon paper or thin metal foil.
9C40.60making multilayer dielectric mirrorsAJP 40(2),294Techniques for making multilayer mirrors tuned for HeNe laser work.
9C40.60eyepiece illuminatorAJP 41(1),138Construct an inexpensive Gauss eyepiece illuminator from a neon pilot light in a block of aluminum.
9C40.60cheap laser spirographTPT 28(9),606Small DC motors with front silvered mirrors mounted on the shafts are use to make a cheap spirograph.
9C40.61poor man's optical benchAJP 33(6),504Make a cheap optical bench out of round bar stock.
9C40.61fabricating triangular optical benchAJP 29(2),xA 5/8" hexagonal bar stock mounted on a 1 7/8" hexagonal bar stock gives a bench similar to the Zeiss design.
9C40.64electrothermal thermocordAJP 30(7),viA flexible heating cord good to 450 C at 5 W/inch.
9C40.65resistor ovenAJP 32(4),xvHollow wire wound resistors can be used as small ovens (insert mercury thermocouple for calibration of thermocouple).
9C40.65simple linear heating rate ovenAJP 36(4),xDesign of a small oven.
9C40.65furnace for growing metal crystalsAJP 32(9),679A simple furnace for growing metal crystals has produced a single crystal of aluminum 2" in diameter and 5" high.
9C40.66low-cost spot welderAJP 32(1),xiiiCopper tongs, a six volt car battery, and some components are used to make this spot welder.
9C40.66spot welderAJP 32(10),xivSchematic for a simple condenser-discharge spot welder.
9C40.70interograph for integrals and areasAJP 52(5),468An interograph that produces both definite and indefinite integrals.
9C40.70gauge blocksAJP 28(8),xDifferent nonstandard uses of gauge blocks, including feeling the attraction between two.
9C40.70profilometerAJP 56(9),857A shop drawing of a profilometer that is inexpensive, accurate, and can be computer interfaced.
9C40.80cheap lab jackAJP 40(11),1706Modify a scissors type axle jack by adding metal plates top and bottom.
9C40.80adjustable platformAJP 37(4),456A simple adjustable platform that rides on two vertical rods.
9C40.81pressure cell - 350 barAJP 36(2),ixDraw up some epoxy into a 0.05 ml Microliter syringe to seal the bottom and lubricate the plunger with light vacuum oil.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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