Search Results: John ray

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

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...

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...

In the canon of the New Testament, the fourth gospel of John is uniquely different from the other three, known as the Synoptics ("seen together"). Mark, Matthew, and Luke have parallel ministries and methods of relating the story of Jesus...

John the Baptist (d. c. 30 CE) was a 1st-century CE itinerant preacher in Judea. We do not know his full name, but he is recognized by his activity. 'Baptizer' (Greek: baptizo) was translated directly into English and meant 'to immerse' or...

John Lee joins World History Encyclopedia to tell us all about his new book, The First Black Archaeologist: A Life of John Wesley Gilbert. Kelly (WHE): Thank you so much for joining me! Let us start by talking about what the book is about...