. Radio-activity : an elementary treatise from the standpoint of the disintegration theory . QLA55BL0WINQ, also METAL andWOOD WORKSHOPS. 14, Coxnxnei?ci£Ll Sti?eet, X^CEOS. W. WATSON & SONS SUPPLY Radio-Active Substances and Apparatus for £o 10 6 CROOKES^ SPINTHARISCOPE> To sl-ioin# -the OF THE MOST EFFECTIVE. THE BEST DESIGN, For the Pocket £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
. Radio-activity : an elementary treatise from the standpoint of the disintegration theory . QLA55BL0WINQ, also METAL andWOOD WORKSHOPS. 14, Coxnxnei?ci£Ll Sti?eet, X^CEOS. W. WATSON & SONS SUPPLY Radio-Active Substances and Apparatus for £o 10 6 CROOKES^ SPINTHARISCOPE> To sl-ioin# -the OF THE MOST EFFECTIVE. THE BEST DESIGN, For the Pocket £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^ ^
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectradioac, bookyear1904
