Search Results: X-Ray

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 Story of Great Inventions by...

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, discovered...

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 X-ray Journal...

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. Hammer. American Technical Book Company...

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.

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

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 life is a typical one of arranged marriages...

The sweat lodge is a temporary or permanent structure integral to Native American culture and frequently used in spiritual ceremonies. The lodge is often a low, dome-shaped, structure heated by hot rocks which produce steam as water is poured...

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 Archimedes...

The city of Mandu is situated about 35 km from Dhar in the Madhya Pradesh region of northern-central India. Most of the city's monuments date to the 15th and 16th century CE. The city is located on a hill which rises 633 m above the sea level...