In the Indices of research series h index is discussed here. The h-index (sometimes called the Hirsch index or Hirsch number) is one of the several research indices which is used to measure the productivity and impact of of a researcher/ research group/ institution. It’s an index which increases on the basis of citations and number of papers continuously with the passage of time. It is the major benchmark used by the employers for selection/recruitment and/ or assessment of Researchers. This e-module will let you know all about the h index: What, How, Who, why......about h index will be answered here. In the very next video we will cover how to identify h index of a researcher in various platforms. (URL link for video: https://youtu.be/BAhPzxWVtVE) For any query please feel free to write to us at openknowledgeok@gmail.com and please do subscribe our youtube channel.......THANKS FOR GIVING YOUR TIME. --- Team OK