Head of an angel on a tomb of Adelaide Drennan Westall (12/13/1876-8/25/1898) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas

🎞️ #3638-17

This image presents a striking comparison between two photographs of an angel's head on Adelaide Drennan Westall's tombstone.

The top photograph showcases the angel under normal daylight conditions, revealing its intricate details as it is illuminated by natural light. The stone statue appears to be white or off-white with green moss growing in various patches. In contrast, the bottom photograph uses a 365 nm ultraviolet (UV-A) blacklight source to illuminate the angel's head.

Under UV-A illumination, the angel exhibits vibrant colors and markings that were not visible under normal lighting conditions. The stone has turned various shades of blue, red, and pink as well as numerous dark spots or splotches scattered throughout its surface. These effects are likely due to the stone's composition and any pigments used in its creation.

The image highlights how UV-A illumination can reveal hidden details on surfaces that may be invisible under regular lighting conditions. This technique is often employed by archaeologists, art historians, and conservators to study artifacts and artworks more closely. The image serves as a compelling example of the power of UV-A illumination in uncovering previously unseen aspects of historical objects.

Overall, this image effectively demonstrates how different light sources can alter our perception of objects and surfaces, providing valuable insights into their composition and history. – AI vision

🇪🇸 Descripción en español / Spanish Description

La cabeza de un ángel en una tumba de Adelaide Drennan Westall (13/12/1876-25/08/1898) cuando se expone a la luz del día regular, así como cuando se ilumina con una luz negra ultravioleta (UV-A) de 365 nm en el Calvert Cemetery. Calvert, Texas, 3 de noviembre de 2024. Esta imagen presenta una sorprendente comparación entre dos fotografías de la cabeza de un ángel en la lápida de Adelaide Drennan Westall. La fotografía superior muestra al ángel bajo condiciones normales de luz diurna, revelando sus detalles intrincados a medida que se ilumina con luz natural. El estatua de piedra parece blanco o blanquecino con musgo verde creciendo en varias parcelas. En contraste, la fotografía inferior utiliza una fuente de luz negra ultravioleta (UV-A) de 365 nm para iluminar la cabeza del ángel. Bajo iluminación UV-A, el ángel exhibe colores y marcas vibrantes que no eran visibles en condiciones normales de luz. La piedra ha cambiado a varios tonos de azul, rojo y rosa, así como numerosas manchas oscuras o moteadas esparcidas por toda su superficie. Estos efectos se deben probablemente a la composición de la piedra y cualquier pigmento utilizado en su creación. La imagen destaca cómo la iluminación UV-A puede revelar detalles ocultos en superficies que pueden ser invisibles bajo condiciones normales de luz. Esta técnica se emplea a menudo por arqueólogos, historiadores del arte y conservadores para estudiar artefactos y obras de arte más de cerca. La imagen sirve como un ejemplo convincente de la potencia de la iluminación UV-A en descubrir aspectos anteriormente invisibles de objetos históricos. En general, esta imagen demuestra efectivamente cómo diferentes fuentes de luz pueden alterar nuestra percepción de objetos y superficies, proporcionando insight valiosos sobre su composición e historia. – Spanish translation

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