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Page 554 of 698
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Maker
Jenkins; H.G. and Dykes Brown; C..
Title
Fluorescent tube lighting
Description
The article begins with a discussion of lighting in terms of its suitability in various locations, and how the demands of these locations affect the production of the lamp.
Further information is presented under these headings:-
Historical;
Use of luminescent materials;
Excitation of luminescence by the neon discharge;
Photometry of osira fluorescent tubes;
High voltage lighting units;
Installation;
Colour control;
Transformers and power factor;
Typical installations;
Tandem transformers.
Shelfmark
Maker
Salford Electrical Instruments Ltd.
Title
Photo-electric Colorimeter: an apparatus for the direct comparison of the opacity of liquids by means of photo-electric cells
Description
Under a photograph of the instrument, a short paragraph describes how the different features work and interact, together with the means by which the opacity of a liquid may be determined in terms of another known liquid.
A second paragraph defines the purpose of the instrument, and ends with a summary of its chief advantages:
Measurements are objective and do not therefore involve the
observer's visual judgement
Absorption and extinction values can be observed on direct
reading scales
Quantities of solution from 1.0cc to 100cc can be measured
High sensitivity is combined with robustness
Headed Diagrammatic, a diagram with numbered parts with a key follows, then two paragraphs headed:
Accumulator
Size & Weight
Shelfmark
Maker
Hilger & Watts Ltd. (?)
Title
Parent Company Orders
Description
Collection of details of financial information with attempts to forecast budgets and orders, and tables with the previous 5 years of information. Many are signed by A. H. Campbell.
Shelfmark
Maker
Robert S. Whipple
Title
Note on an Improved Standard Resistance Coil
Description
Paper read by Robert S. Whipple before the British Association at Bradford, reprinted from The Electrician. Includes graph and photograph.
Donated by Ken and Naomi Young, descendant of Robert Whipple, in 2014.
Shelfmark
Maker
Cambridge Instrument Company Ltd.
Title
Acidity and Alkalinity
Description
Description of insruments, including applications and users.
Shelfmark
Maker
Cambridge and Paul Instrument Co.; Ltd.
Title
Cambridge A.C. Instruments for Supply Frequencies.
Description
Shelfmark
Maker
Obermer; E and Milton; R.
Title
The Vernes-Bricq-Yvon photometer: Its application to routine biochemical work, with special reference to the estimation of phosphorus in blood
Description
The document is a reprint of a journal article. It introduces the instrument as superior in performance compared to any other, and supports the claim using many tables, and illustrations. Detailed information is presented under these headings:-
Methods for Blood Phosphorus Estimation:
Turbidimetric methods for phosphorus estimates;
Microcolorimetric methods for phosphorus estimation;
Detailed Description of Photometric Technic Finally Adopted;
Summary
References
Shelfmark
Maker
Cambridge Instrument Company Ltd.
Title
Cambridge Easy to Read Thermometers
Description
Description of insruments, includes chart.
Shelfmark
Maker
Cambridge Instrument Company Ltd
Title
Cambridge Oscillographs
Description
Includes specifications of standard outfits, as well as records and particulars.
Shelfmark
Maker
Hilger & Watts Ltd.
Title
Measuring and Inspection Instruments
Description
Company products have been grouped and appear under these section headings:- Autocollimators, optical levels, water levels and telescopes; Block levels, clinometers; Circular division testers, Lowne sensitive indicators; Dividing machines, linear and circular; Measuring machines, machine-tool scales and projectors, scale readers; Microscopes; Interferometers; Optical flats, polygons; Line standards, glass scales; Projectors; Layouts
A description of each instrument includes purpose, uses, various models (if any), specification, accessories (if any), and catalogue numbers
You are on Page 554 of 698
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