caption: The image shows a painting of a man in a black suit and bow tie, wearing spectacles, against a black background. At the top and bottom of the image, there is text which reads "Hendrik Anton Lorentz". The man in the painting has a serious expression on his face, and his hands are clasped in front of him. He is wearing a black coat with a white shirt and a black bow tie. His hair is neatly combed and his eyes are focused intently on something in the distance.