Laboratory and Workshop Notes: A Selection Reprinted from the Journal of Scientific Instruments, Issue 7Arnold, 1962 - Laboratories |
Contents
Laboratory and workshop devices and techniques | 1 |
A device for reading values from published graphs M R Head | 11 |
A chromatographic spot dryer G Feuer and J G Platt | 17 |
A technique for simultaneous zone purification and single crystal | 27 |
Laboratory closure of metal tubes by hot forging W A Alexander | 43 |
CONTENTS | 48 |
Robust hightemperature brazing oven W J Gunning | 55 |
Method for sealing thermocouple wire through fused silica for use at high temperatures M Priem | 56 |
A cryostat for the range 60 to 20c M A Mueez and N Singer | 174 |
Improvements to the design of a mechanical manostat for a helium | 180 |
A susceptibility thermometer for use at very low temperatures | 187 |
A method of sealing evacuated wide bore silica tubing D E Hill | 194 |
High vacuum sliding seal G J Lake P B Lindley and A G Thomas | 203 |
A simple test to distinguish between metals used to seal hard glasses Page D J Pacey | 209 |
A simple pressure indicator for vacuum desiccators G Godfrey | 210 |
A masking jig for multiple film deposition F A Nunn and D S Campbell | 213 |
Vacuumdeposited thinfilm thermocouples for accurate measurement of substrate surface temperatures L H Bullis | 57 |
Ribbon thermopile J P Funk | 58 |
A footoperated continuous focusing attachment for dissecting micro | 64 |
Illumination system for micrography of opaque objects E E | 71 |
45 | 76 |
A method for producing fine transparent slits K Fea and A C | 78 |
Thermal devices and techniques | 87 |
An electric furnace element employing carbon junction resistances | 94 |
Page | 97 |
Direct relative humidity indication from dry and wet bulb temperatures P Nordon and N W Bainbridge 60 A dewpoint meter based on thermoelectric... | 111 |
A method of equalizing thermistors M C Godin 65 The use of unmatched thermistors for the measurement of temperature difference under varying a... | 114 |
A method for accurate meltingpoint determination at high tempera tures B Riley | 116 |
An improved high temperature cryoscopic technique H B Bell and C R Masson 114 116 | 119 |
Devices and techniques for use with liquids and gases | 121 |
Tyre connectors for use with liquid gas and vacuum lines G W Green 69 Robust glass stirrer gland R P Sheldon and J Gilleeney 70 A method to reco... | 123 |
A device for an accurate fluid level adjustment in the trough of a glass knife of the ultramicrotome V Balashov and G W Ripley | 124 |
Mercuryflow control with a magnetically operated allglass valve J R Richards | 126 |
simple laboratory production J H Robertson | 133 |
78 | 134 |
A new laboratory allglass circulation pump for gases A Montefinale and T W Zawidzki 79 A versatile gascirculation pump A transistordriven gas sa... | 136 |
F S Klein | 139 |
W Hill and R N Stone | 141 |
Calibration of flowmeters with watersoluble gases W E Falconer and A van Tiggelen | 146 |
Gas flowmeter for continuous operation I Chavet | 148 |
A flowmeter for measuring very low rates of helium gas flow R M Black R G Rhodes and C H Spicer | 149 |
Devices and techniques for low temperature work | 152 |
Liquid nitrogen gauge S M Trujillo and L L Marino | 161 |
A simple semiautomatic cryostat to operate at temperatures above | 167 |
A totally enclosed gate valve G Munday | 215 |
A silenced air pressure control valve P Bradshaw | 217 |
Wide aperture valve for evacuating shock tubes R H Collins and D H Napier | 220 |
Oring piston seals for high pressure M S Paterson | 222 |
A simple glasstometal pressuretight coupling D Ambrose | 226 |
Electrical and electronic devices and techniques 123 A method of making very accurate masters for printed wiring micro miniature and solid circuits ... | 228 |
A simple and inexpensive method of tracing cathoderay tube wave forms A W Gooder | 231 |
A simple masking technique for the electrolytic treatment of metals and semiconductors J G Gibson | 232 |
A porous enclosure for electroplating anodes of unusual shape G T J Arnison | 234 |
A solderless connector for electronic breadboards H Sear | 235 |
A safe and inteferencefree earth for an oscilloscope J Montgomery and C H Vincent | 236 |
A simple flame ionization detector cell L L T Bradley and W E Falconer | 238 |
A solenoid with a nearly uniform axial magnetic field K J Overshott and I R Smith | 239 |
A stable twotransistor oscillator for displacement measurements M J Tucker R Bowers M J Harris and B J Barrow | 242 |
An a c Hall effect gaussmeter C D Cox | 244 |
An automatic magnetic field calibrator L Niemelä | 247 |
A new transducer for recording finger pulsations J E Pallett | 249 |
An exploding wire triggered spark gap R A Harraway | 251 |
Switching and clamping by means of plasma jet switches W A Cilliers and S Leeman | 252 |
A simple rotary switch for use at low speeds of rotation D Goodhue | 254 |
Electronic speed change of small synchronous motors N L Gregory | 255 |
A simple a c bridge with polarity reversal of d c output at null point J H Bauman | 257 |
mA d c supply stable to 1 part per million per day J Wilbur Ham and K S Jackson | 258 |
Automatic frequency control for an electron spin resonance spectro meter C N Owston | 260 |
The use of Zener diodes as voltage controlled capacitors D J Barnes | 262 |
A simple pulse generator for semiconductor diode lifetime measure ments N R Howard | 263 |
An inexpensive pulse generator for singleshot operation of magnetrons | 265 |
An inexpensive general purpose biological amplifier W Barry | 271 |