The phrase "a visual evidence of" is not correct in standard English; it should be "visual evidence of" without the article "a." You can use it when referring to something that serves as proof or illustration that can be seen, typically in contexts involving photography, video, or other visual media.
Example: "The photograph provided visual evidence of the event that took place."
Alternatives: "a visual representation of" or "visual proof of".
Radar may give a warning before there is any visual evidence of a tornado or imminent tornado, but ground truth from an observer can either verify the threat or determine that a tornado is not imminent.
Bukeni Waruzi, a Congolese human-rights activist (who is now a WITNESS staff member), went to great lengths to borrow a film camera from a local wedding photographer, disguise himself as a journalist, and film visual evidence of war crimes like these being committed by Lubanga, only to spend years of persistent advocacy to ensure that his videos would be used to secure justice for child soldiers.
Allergy skin testing confirmed hypersensitivity to cockroach extract, and a home visit revealed visual evidence of infestation and the presence of Bla g 1 German cockroach allergen in vacuumed dust.
In celebration of World Environment Day on June 3, 2005 the United Nations Environment Programme UNEPP) in cooperation with NASA, United States Geological Survey (USGS and Universityy of Maryland launched One Planet, Many People: Atlas of our Changing Environment, a publication that provides visual evidence of environmental change using satellite images, graphics and text.
All adult patients (older than 18 years of age) with community-acquired pneumonia and visual evidence of a pulmonary infiltrate on a chest X-ray or computed tomography scan were included.
The Star purchased the video from the second party for $5,000, a move it defended as a legitimate transaction to acquire visual evidence of the mayor's behavior.
There are many numbers in the tale of the tape for this fight that support the view that Mayweather, a seasoned welterweight, will be too big and strong for Maidana, and the visual evidence of an advantage in speed is incontrovertible.
This image was the first direct visual evidence of a supermassive black hole and its shadow.
No visual evidence of a good deed has surfaced, as it did last August after Mr. Gosling broke up a fight on Astor Place over a painting.
