Biographies and Nobel Lectures of the prizewinners, from the Nobel Foundation.

An extensive resource on the life, the times, and the work of Galileo Galilei.

History from Benjamin Franklin to the present. U.S. law and practice. Worldwide time change dates.

Library calalog, image library, and numerous virtual exhibits available online.

A biographical dictionary of medical eponyms, i.e. medical conditions and techniques and the people for whom they are named.

Many full texts available online.

Epact is an online database of medieval and Renaissance scientific instruments made before 1600 A.D.

The museum and web site are particularly rich resources for the life and work of Galileo.

Presents the people and the discoveries of 20th century science and technology in a variety of accessible, and interactive Web features. Based on the PBS television series.

Memorializes births and deaths of famous and not so famous scientists of the past, and other events in science history. Searchable.

Extensive collection of material. Open to the public.

Provides access to the thousands of prints and photograph collection of the History of Medicine Division (HMD) of the U.S. National Library of Medicine (NLM). The collection includes portraits, pictures of institutions, caricatures, genre scenes, and

Online texts of historical documents relating to the history of the steam engine.

Includes timelines and historical essays of the top 20.

History and FAQs of various calendars, including Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan. Astronomy, years, months, and days of the week.

Biographical information and archival collections of several prominent twentieth-century American biomedical scientists.

Discovered the rotating magnetic field, the basis of most alternating-current machinery. Als, invented the Tesla coil, that is widely used in radios. Includes biography, list of inventions, photos, and quotes.

Information and documents about Edison`s life and career including his years as a telegrapher and inventions in the field of telegraphy.

A biographical, bibliographical and archival database of more than 3,000 Australian scientists with links to related articles and images.

Peer-reviewed journal of the Society for the History of Technology. Subscription information, submission guidelines, and free access to tables of contents and abstracts.

An illustrated history of timekeeping from ancient times to the present, by NIST