Public domain photos

The image shows a man wearing goggles and a watch, holding a pen and writing something on a piece of paper while standing in front of a table with bottles, papers, and other objects. In the background, there are pipes and lights, suggesting he is working in a laboratory.

The image shows a man wearing goggles and a watch, holding a pen and writing something on a piece of paper while standing in front of a table with bottles, papers, and other objects. In the background, there are pipes and lights, suggesting he is working in a laboratory.Open in library