Sleep Disorders
Paradoxical insomnia
Jul. 07, 2024
This is an image preview.
Start a Free Account
to view the full image.
-
Nearly 3,000 illustrations, including video clips of neurologic disorders.
-
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
-
Full spectrum of neurology in 1,200 comprehensive articles.
-
Listen to MedLink on the go with Audio versions of each article.
Miners extracting ore from a mine (1)
Engraving by Virgilius Solis in Nuremberg (1524-1562). On the left, two men operate a windlass (with a horizontal axis) to lift ore from lower levels of the mine. A rope is wrapped around the barrel in such a manner that a bucket on one end is lowered while the bucket on the other end is raised. Then a foreman directs the extraction of ore by a miner wielding a large hammer and the ore is heated in a furnace to extract the desired metals. (Courtesy of the Rijkmuseum, Amsterdam, The Netherlands. Public domain. Edited by Dr. Douglas J Lanska.)