 The screen is in front of and usually below the lens of the camera, and the words on the screen are reflected to the eyes of the performer using a sheet of clear glass or specially prepared beam splitter.The teleprompter was invented in 1950 by Hubert Schlafly, who was working at 20th Century Fox film studios in Los Angeles.1950 Sengstaken-Blakemore tube

A Sengstaken-Blakemore tube is an oro or nasogastric tube used occasionally in the management of upper gastrointestinal hemorrhage due to bleeding from esophageal varices which are distended veins in the esophageal wall, usually as a result of cirrhosis.