What is a "research gap" or "knowledge gap" in research and literature? Is gap explored or constructed ? How can gap in research be identified?
![Optic-null space medium for cover-up cloaking without any negative refraction index materials – topic of research paper in Medical engineering. Download scholarly article PDF and read for free on CyberLeninka open science Optic-null space medium for cover-up cloaking without any negative refraction index materials – topic of research paper in Medical engineering. Download scholarly article PDF and read for free on CyberLeninka open science](https://cyberleninka.org/viewer_images/720181/f/1.png)
Optic-null space medium for cover-up cloaking without any negative refraction index materials – topic of research paper in Medical engineering. Download scholarly article PDF and read for free on CyberLeninka open science
![A Study on Investigation and Reconstruction of Negative Spaces in an Old-Street Area in Nanning - Analysis of Thermal Environment in Negative Spaces | Scientific.Net A Study on Investigation and Reconstruction of Negative Spaces in an Old-Street Area in Nanning - Analysis of Thermal Environment in Negative Spaces | Scientific.Net](https://www.scientific.net/AMR.671-674.2414/preview.gif)
A Study on Investigation and Reconstruction of Negative Spaces in an Old-Street Area in Nanning - Analysis of Thermal Environment in Negative Spaces | Scientific.Net
![An Aligned-Gap and Centered-Gap Rectangular Multiple Split Ring Resonator for Dielectric Sensing Applications – topic of research paper in Nano-technology. Download scholarly article PDF and read for free on CyberLeninka open science An Aligned-Gap and Centered-Gap Rectangular Multiple Split Ring Resonator for Dielectric Sensing Applications – topic of research paper in Nano-technology. Download scholarly article PDF and read for free on CyberLeninka open science](https://cyberleninka.org/viewer_images/1314939/f/1.png)
An Aligned-Gap and Centered-Gap Rectangular Multiple Split Ring Resonator for Dielectric Sensing Applications – topic of research paper in Nano-technology. Download scholarly article PDF and read for free on CyberLeninka open science
![Letter G With Leaf Inside In Negative Space For Green Agriculture.. Royalty Free Cliparts, Vectors, And Stock Illustration. Image 136273591. Letter G With Leaf Inside In Negative Space For Green Agriculture.. Royalty Free Cliparts, Vectors, And Stock Illustration. Image 136273591.](https://previews.123rf.com/images/andyadi/andyadi1912/andyadi191200074/136273591-letter-g-with-leaf-inside-in-negative-space-for-green-agriculture-botany-and-biology-science-researc.jpg)
Letter G With Leaf Inside In Negative Space For Green Agriculture.. Royalty Free Cliparts, Vectors, And Stock Illustration. Image 136273591.
![Historical comparison of gender inequality in scientific careers across countries and disciplines | PNAS Historical comparison of gender inequality in scientific careers across countries and disciplines | PNAS](https://www.pnas.org/content/117/9/4609/F1.large.jpg)
Historical comparison of gender inequality in scientific careers across countries and disciplines | PNAS
![Bridging the Gap Between Research and Practice: Involving Group Therapists in the Development of Clinically Relevant Research Questions and Methodologies | Semantic Scholar Bridging the Gap Between Research and Practice: Involving Group Therapists in the Development of Clinically Relevant Research Questions and Methodologies | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/82273c6e78cccce4d9e519fbdb81323c6b40b73d/89-Table2-1.png)
Bridging the Gap Between Research and Practice: Involving Group Therapists in the Development of Clinically Relevant Research Questions and Methodologies | Semantic Scholar
![Pew Research Center on Twitter: "The wealth gap between America's richest and poorer families more than doubled from 1989 to 2016. https://t.co/tE0vmGQrvK… https://t.co/NH48RZKqXf" Pew Research Center on Twitter: "The wealth gap between America's richest and poorer families more than doubled from 1989 to 2016. https://t.co/tE0vmGQrvK… https://t.co/NH48RZKqXf"](https://pbs.twimg.com/media/ERBvMmiWoAAmHsM.png)