![Radium und andere radioaktive Substanzen : unter besonderer Benutzung eines von Elektro-Ingenieur William J. Hammer vor dem American Institute of Electrical Engineers und der American Electrochemical Society am 17. April 1903 Radium und andere radioaktive Substanzen : unter besonderer Benutzung eines von Elektro-Ingenieur William J. Hammer vor dem American Institute of Electrical Engineers und der American Electrochemical Society am 17. April 1903](https://c8.alamy.com/comp/2CRMT3R/radium-und-andere-radioaktive-substanzen-unter-besonderer-benutzung-eines-von-elektro-ingenieur-william-j-hammer-vor-dem-american-institute-of-electrical-engineers-und-der-american-electrochemical-society-am-17-april-1903-gehaltenen-vortrages-bringt-beschreibung-neuer-wissen-schaftlicher-instrumente-und-apparatesowie-werkzeuge-und-berichtet-berdie-neuesten-fortschritte-der-physikund-elektrotechnik-probenummernsowie-inhaltsverzeichnis-des-vorjhrigenjahrganges-gratis-und-franko-abonnementvierteljhrlich-nur-mk-150-porto-30-pfg-ausland-60-pfg-yidministration-derfachzdtschrit-2CRMT3R.jpg)
Radium und andere radioaktive Substanzen : unter besonderer Benutzung eines von Elektro-Ingenieur William J. Hammer vor dem American Institute of Electrical Engineers und der American Electrochemical Society am 17. April 1903
![Radium, and Other Radio-Active Substances: Polonium, Actinium, and Thorium, With a Consideration of Phosphorescent and Fluorescent Substances, the ... of Disease by the Ultra-Violet Light: Hammer, William Joseph: 9781297885235: Amazon.com: Books Radium, and Other Radio-Active Substances: Polonium, Actinium, and Thorium, With a Consideration of Phosphorescent and Fluorescent Substances, the ... of Disease by the Ultra-Violet Light: Hammer, William Joseph: 9781297885235: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/41FILGRDoxL._SX313_BO1,204,203,200_.jpg)
Radium, and Other Radio-Active Substances: Polonium, Actinium, and Thorium, With a Consideration of Phosphorescent and Fluorescent Substances, the ... of Disease by the Ultra-Violet Light: Hammer, William Joseph: 9781297885235: Amazon.com: Books
![Radium and other radio-active substances.... Inscribed by the author by William J Hammer - 1st edition - Radium and other radio-active substances.... Inscribed by the author by William J Hammer - 1st edition -](https://d3525k1ryd2155.cloudfront.net/h/583/839/245839583.0.l.jpg)
Radium and other radio-active substances.... Inscribed by the author by William J Hammer - 1st edition -
![In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation](https://invention.si.edu/sites/default/files/inventors-hammer-william-x-ray-demo-for-daughter-mabel-1902-si-neg-85-8778-750-inline-edit.jpg)
In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation
![X098A067], Letter from William Joseph Hammer to Thomas Alva Edison, December 7th, 1894 · Thomas Edison Papers Digital Edition X098A067], Letter from William Joseph Hammer to Thomas Alva Edison, December 7th, 1894 · Thomas Edison Papers Digital Edition](https://edisondigital.rutgers.edu/files/large/X098A067/xy6920.jpg)
X098A067], Letter from William Joseph Hammer to Thomas Alva Edison, December 7th, 1894 · Thomas Edison Papers Digital Edition
![Workers sitting and standing outside Edison's first lamp factory, including executive staff members in the front row (from left to right) Philip S Dyer, William J Hammer, Francis R Upton, and James Workers sitting and standing outside Edison's first lamp factory, including executive staff members in the front row (from left to right) Philip S Dyer, William J Hammer, Francis R Upton, and James](https://c8.alamy.com/comp/T6YB1G/workers-sitting-and-standing-outside-edisons-first-lamp-factory-including-executive-staff-members-in-the-front-row-from-left-to-right-philip-s-dyer-william-j-hammer-francis-r-upton-and-james-bradley-menlo-park-new-jersey-1880-image-courtesy-us-department-of-energy-san-francisco-california-T6YB1G.jpg)
Workers sitting and standing outside Edison's first lamp factory, including executive staff members in the front row (from left to right) Philip S Dyer, William J Hammer, Francis R Upton, and James
![In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation](https://invention.si.edu/sites/default/files/inventors-hammer-william-with-wright-flyer-nasm-9A01542-750-inline-edit.jpg)
In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation
![In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation](https://invention.si.edu/sites/default/files/inventors-hammer-william-in-army-uniform-ww1-si-neg-85-408-750-inline-edit.jpg)
In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation
![C.J. Edwards, J.C. Eberhardt (Dayton Aeroplane Club), aviation enthusiast William J. Hammer, and R. Joseph Collier (1876-1918), publisher and president of the Aero Club of America, at Wilbur Wright's funeral ca. 1912 C.J. Edwards, J.C. Eberhardt (Dayton Aeroplane Club), aviation enthusiast William J. Hammer, and R. Joseph Collier (1876-1918), publisher and president of the Aero Club of America, at Wilbur Wright's funeral ca. 1912](https://l450v.alamy.com/450v/2bbymgk/cj-edwards-jc-eberhardt-dayton-aeroplane-club-aviation-enthusiast-william-j-hammer-and-r-joseph-collier-1876-1918-publisher-and-president-of-the-aero-club-of-america-at-wilbur-wrights-funeral-ca-1912-2bbymgk.jpg)
C.J. Edwards, J.C. Eberhardt (Dayton Aeroplane Club), aviation enthusiast William J. Hammer, and R. Joseph Collier (1876-1918), publisher and president of the Aero Club of America, at Wilbur Wright's funeral ca. 1912
![In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation In Uncle Sam's Service: WWI Inventor William J. Hammer | Lemelson Center for the Study of Invention and Innovation](https://invention.si.edu/sites/default/files/inventors-hammer-william-ac0069-0000017-sepia-teaser-edit.jpg)