- IdiomaAfrikaans Argentina Azərbaycanca
Bahasa Indonesia Brasil Brezhoneg
Català Česky Dansk
Deutsch Dhivehi English
English English Español
Esperanto Estonian Euskara
Finnish Français Français
Gaeilge Galego Hrvatski
Íslenska Italiano Latviešu
Lëtzebuergesch Lietuviu Magyar
Malay México Nederlands
Norsk bokmål Norwegian nynorsk Polski
Português Română Slovenšcina
Slovensky Srpski Svenska
Tiếng Việt Türkçe Wolof
Ελληνικά Български Македонски
Монгол Русский Српски
Українська עברית العربية (مصر)
العربية العربية پارسی
कोंकणी বাংলাગુજરાતી
தமிழ் ಕನ್ನಡ ภาษาไทย
ქართული ខ្មែរ 中文 (繁體)
中文 (香港) 日本語 简体中文
한국어
Inicio / 15 Con mejor calificación 10
Vista calendario:
Lista mensual
Fecha de envío
(0.12) 20220709-5649
(0.01) 20220710-5830
(0.01) 20200927-8888
(0.01) 20190330-1983
(0.01) 20190330-1981
(0.01) 20190330-1639
(0.01) The anatomist’s hand
January 23, 1896, marked the first time that Röntgen demonstrated his discovery in public. The audience applauded as the hand of well-known anatomist Albert von Kölliker (1817-1905) was scanned, and the X-ray image was reproduced and spread not long afterward. This allowed audiences outside the technical sphere to share in the thrill – and the chill – brought by the sudden transparency of the human body.
(0.00) 20220709-5737
(0.00) 20200930-8972
(0.00) Cardiac pacemaker
The fully implantable cardiac pacemaker from Elema-Schönander was made possible by two inventions in the 1940s: small batteries and energy-saving transistors. A simple plastic cup was used as the mold. The first versions were affected by hairline cracks in the molding material. The electrode cable was also not sufficiently fatigue-resistant to stand up to the heart’s approximately 100,000 beats per day.