âNeurotic people are rather anxious, insecure, and easily annoyed. They have a tendency towards depression, often show low self-esteem and tend to be generally dissatisfied with their lives,â said psychologist Dr. Christine Finn of the University of Jena in Germany.
A doorstop is an object or device used to hold a door open or closed, or to prevent a door from opening too widely. Alternatively, a doorstop can be a thin slat built inside a door frame to prevent a door from swinging through when closed. A doorstop may also be a small bracket or 90 degree piece of metal applied to the frame of a door to stop the door from swinging and converting that door to a single direction.
As well as the two previous answers earlier elevators used a light beam across the doors which when broken triggers the door opener. The other type used was in the door opening mechanism which sensed the extra resistance during door travel and opened the doors. These have been superseded by the infra red type.