X ray: Did you mean...?

The discovery of X-rays – a form of invisible radiation that can pass through objects, including human tissue – revolutionised science and medicine in the late 19th century. Wilhelm Conrad Röntgen (1845-1923), a German scientist...

X-rays were discovered in 1895 by German scientist Wilhelm Conrad Röntgen (1845-1923). This is an early X-ray, taken in 1897, of a 30-year-old woman who was fully dressed when the X-ray was taken. Image from p.180 of The American...

House of the Ray family at Wilson's Creek National Battlefield, photograph by J. Pinta, SW Missouri, 10 March 2014. The Ray House is one of the few remaining structures from the Battle of Wilson's...

Two men taking an X-ray with an early Crookes tube apparatus from the late 1800s. Illustration from The X-ray, or Photography of the Invisible and its Value in Surgery by William J. Morton and Edwin W...

The bones of a hand with a ring on one finger, viewed through x-ray. Photoprint from radiograph by W. K. Röntgen, 1895. Wellcome Collection.

Photo of an early X-ray procedure using a fluoroscope screen, around 1910. No precautions were taken to minimise exposure since the dangers of X-rays were not known at the time. Illustration from p. 233 of The...

Ray Stevenson as the English pirate Blackbeard, aka Edward Teach (d. 1718) in the TV series Black Sails. © 2014 Starz

The structure of deoxyribonucleic acid (DNA) was discovered in 1953 by two molecular biologists, James Dewey Watson (1928-2025) and Francis Harry Compton Crick (1916-2004). Watson and Crick were awarded...

View full lesson: http://ed.ted.com/lessons/a-glimpse-of-teenage-life-in-ancient-rome-ray-laurence Welcome to the world of Lucius Popidius Secundus, a 17-year old living in Rome in 73 AD. His...

Archimedes (l. 287-212 BCE) was a Greek engineer and inventor who is regarded as the greatest mathematician of antiquity and one the greatest of all time. He is credited with a number of inventions still in use today (such as the...