. Radio-activity : an elementary treatise from the standpoint of the disintegration theory . ocket £i i o | For the Microscope RADIUM BROMIDE. High Activity. Five Milligramme Tubes each Medium Activity. Two Centii?ramme Tubes each WATSON & SONS £7£o Five Milligramme TubesTwo Centigramme Tubes RADIUM ROD contains a small quantity ofhigh-activity Eadium with which an Electroscope can be dischargedand many interesting Experiments made .. .. .. each £3 5 o WATSON & SONS ELECTROSCOPE can be discharged with Eadium Eod .. .. .. .. .. .. complete £150 RADIUM SCREENS FOR PHOTOGRAPHY. I plate, 3/6 each
. Radio-activity : an elementary treatise from the standpoint of the disintegration theory . ocket £i i o | For the Microscope RADIUM BROMIDE. High Activity. Five Milligramme Tubes each Medium Activity. Two Centii?ramme Tubes each WATSON & SONS £7£o Five Milligramme TubesTwo Centigramme Tubes RADIUM ROD contains a small quantity ofhigh-activity Eadium with which an Electroscope can be dischargedand many interesting Experiments made .. .. .. each £3 5 o WATSON & SONS ELECTROSCOPE can be discharged with Eadium Eod .. .. .. .. .. .. complete £150 RADIUM SCREENS FOR PHOTOGRAPHY. I plate, 3/6 each ; ^ plate, 6/6 each ; 1/1 plate, 10/6 each. With these, Negatives of Coins and other subjects enclosed in light tight bigsmxy be producedand Shadow Pictures obtained. RADIUM FOR THERAPEUTIC AND HIGH-FREQUENCY APPARATUS. Send for Illustrated Price Lists and, full particulars post free on application. Wi WATSON & SONSj^ ^&overnm°ent 313, High Holborn, LONDON, And at 16, Forrest Road, EDINBURGH. Depot:—78 Swanston Street, MELBOURNE, HflDIO-flCTIVITY And allied Phenomena are most conveniently and accu-rately studied by means of our new MICRO-ELECTROSCOPE, as designed and used by Mr. C. T. E. Wilson, This Instrument combines very low capacity, highsensitiveness and consistency of readings with veryperfect insulation and freedom from disturbance by external fields. Price of Electroscope alone .. £2 10 0„ Microscope and Support £4 13 0„ Stand and Accessories • • £ 12 0 Also ELECTROMETERS made in accordance with the publishedspecifications of Dr, F. Dolezalbk. Price £7 10 Full Particulars on application. 0 London Office and Showroom ; THE CAMBRIDGE SCIENTIFIC INSTRDMENT COIVIPANY, kllVIITED. HEAD OFFICE AND WORKS:— CAMBRIDGE, ENGLAND. -92, HATTON GARDEN, RADIUM IN ITS EMPLOYMENT IN THERAPEUTICS AND FOR SCIENTIFIC RESEARCH. Prices on . apjplication. Surface each 7/6. Throat £1 1/- activity. per sq. inch, -/9 per lb.,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectradioac, bookyear1904
