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Partridge pea (Cassia fasciculata) when exposed...Creek Park. College Station, Texas  
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Partridge pea (Cassia fasciculata) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, August 30, 2024

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The image presents a striking comparison between the appearance of Partridge pea flowers under regular daylight and when illuminated by a 365 nm ultraviolet (UV-A) blacklight. The left side of the image features two yellowish-orange Partridge peas, showcasing their natural coloration against a dark background. In contrast, the right side reveals the same plants exposed to UV light, where they exhibit bright orange petals with red and purple accents.

**Key Observations:**

* **Daylight Appearance:** The flowers appear yellowish-orange in daylight.
* **UV Light Effect:** Under UV illumination, the flowers transform into bright orange with red and purple highlights.
* **Background:** A dark background is used to accentuate the color changes.

**Conclusion:**

The image effectively demonstrates the phenomenon of fluorescence in plants, where certain wavelengths of light cause them to emit their own light. This effect is particularly evident in the Partridge pea flowers when exposed to UV-A radiation, highlighting the unique characteristics of these plants under different lighting conditions. – AI vision

La guisante de perdigón (Cassia fasciculata) cuando se expone a la luz diurna regular y también cuando se ilumina con una luz negra ultravioleta (UV-A) de 365 nm en el Lick Creek Park. College Station, Texas, 30 de agosto de 2024. La imagen muestra una sorprendente comparación entre la apariencia de las flores de guisante de perdigón bajo luz diurna y cuando se iluminan con una luz negra ultravioleta (UV-A) de 365 nm. El lado izquierdo de la imagen presenta dos guisantes de perdigón amarillentos que muestran su coloración natural contra un fondo oscuro. Por el contrario, el lado derecho revela las mismas plantas expuestas a luz UV, donde muestran pétalos naranja brillante con acentos rojos y morados. **Observaciones clave:** * **Apariencia en la Luz del Día:** Las flores aparecen amarillentas bajo luz diurna. * **Efecto de la Luz UV:** Bajo iluminación UV, las flores se transforman en naranja brillante con resaltos rojos y morados. * **Fondo:** Se utiliza un fondo oscuro para acentuar los cambios de color. **Conclusión:** La imagen demuestra efectivamente el fenómeno de la fluorescencia en las plantas, donde ciertas longitudes de onda de luz hacen que emitan su propia luz. Este efecto es particularmente evidente en las flores de guisante de perdigón cuando se exponen a radiación UV-A, lo que resalta las características únicas de estas plantas bajo diferentes condiciones de iluminación. – Spanish translation


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