Blood-Pressure Recorder, 1859, from Etienne-Jules Marey. "La Methode Graphique dans les Sciences Experimentales et particulierement en Physiologie et en Medicine." G. Masson. Paris. 1878. p. 167. fig. 52

Bernard Dionysius Geoghegan is media historian with a particular interest in how digital technologies intertwine with the way we conceive of science, culture, and the environment. He is a Senior Lecturer in Media & Communications at Coventry University and has also held appointments in the USA, France, and Germany. Alongside his scholarship he works as a curator for the technosphere project at the Haus der Kulturen der Welt. He publications appear in, among other venues, Critical Inquiry, Grey Room, and The IEEE Annals on the History of Computing. He may be found online at Twitter, iTunes, or Google+ and reached by email at His CV is available here

Bernard likes to get email. Notice a reference missing from one of his texts? Did you write something he should read? Is there a dead link or a typo on this page somewhere?  Do you have comments on a podcast? If so, he'd be delighted to hear from you.