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QABORATOIRE DE EAblOACTIT

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S/ CENTRE ) 5 DE “DOCUMENTATION

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PREFACE.

The Brussels Exhibition of 1910 is the first International Exhibition in which the organisation of the British Section has been directed by the Exhibitions Branch, of the Board of Trade.

The Liberal Arts Committee was one of the many nominated to assist the Department, and to a sub-committee of this body has fallen the task of organising the exhibit of philosophical instruments. Recognising in an exhibition of modern scientific instruments the great importance of detailed descriptions, the Board of Trade have arranged for the compilation of English and French illustrated catalogues, which it is hoped may be of permanent value as books of reference.

For the assistance of visitors some of the more important and interesting exhibits are here mentioned. Dealing first with one of the most ancient branches of science, that of optics, it may be noted that while until the last few years the production of accurate spherical surfaces has been almost the sole task of the optician, modern spectroscopic development has made still higher demands for perfection in flat surfaces. The exhibits of Messrs. Adam Hilger show conclusively the skill with which they have attained this perfection in the unique Echelon spectroscope of 56 plates and in the Lummer-Gehrcke Plate. Some interesting details are given as to the testing of the glass of these instruments. Among other optical exhibits are the fine series of surveying instruments of many types shown by Messrs. W. F. Stanley, the interesting group of specialised microscopes by Messrs. Swift, and the telescopes and other instruments by Messrs. Steward.

Electricity in its measurement and applications is the branch of science most largely represented, and the apparatus exhibited by the Cambridge Scientific Instrument Co. and by Messrs. R. W. Paul exemplify the wide range of instruments demanded by electricians. Among the most interesting are instruments for the measurement of alternating currents of ordinary

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Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 98,08 %.

La langue de reconnaissance de l'OCR est l'Anglais.

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