Velvet panicum grass (Dichanthelium scoparium)(?) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight on Racoon Run Trail in Lick Creek ParkLick Creek: Background Notes. College Station, Texas

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College Station, Texas, November 14 - 15, 2024

Album 3642: College Station, Texas, November 14 - 15, 2024

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The image presents a comparative display of velvet panicum grass under two distinct lighting conditions: regular daylight and UV-A illumination from a blacklight.

**Top Image (Daylight):**

* The grass is depicted in its natural state, showcasing long, thin blades with vibrant green coloration.
* The surrounding environment appears to be composed of dry leaves or leaf fragments on the ground.

**Bottom Image (UV-A Illumination):**

* The same plant is illuminated by a 365 nm UV-A blacklight, revealing a striking blue hue.
* This visual effect suggests that the plant contains fluorescent pigments, which absorb light in the ultraviolet spectrum and emit it at longer wavelengths.
* As a result, the plant appears to glow with an intense blue color when exposed to this specific wavelength of light.

**Comparison:**

* The contrast between the two images highlights the unique characteristics of the velvet panicum grass's fluorescence.
* Under daylight conditions, the plant exhibits its natural green coloration, while under UV-A illumination, it takes on a radiant blue appearance. – AI vision

🇪🇸 Descripción en español / Spanish Description

El hierro de hoja pana de terciopelo (Dichanthelium scoparium) cuando se expone a la luz diurna habitual y también cuando se ilumina con una luz negra de ultravioletas (UV-A) de 365 nm en el sendero Racoon Run en el parque Lick Creek. College Station, Texas, 15 de noviembre de 2024. La imagen presenta una exhibición comparativa del hierro de hoja pana de terciopelo bajo dos condiciones de iluminación distintas: luz diurna habitual e iluminación UV-A de una linterna negra. **Imagen superior (Luz diurna):** * El hierro se representa en su estado natural, mostrando hojas delgadas largas con coloración verde brillante. * El entorno circundante parece estar compuesto por hojas secas o fragmentos de hojas en el suelo. **Imagen inferior (Iluminación UV-A):** * La misma planta se ilumina con una linterna negra UV-A de 365 nm, revelando un tono azul sorprendente. * Este efecto visual sugiere que la planta contiene pigmentos fluorescentes que absorben luz en el espectro ultravioleta y la emiten a longitudes de onda más largas. * Como resultado, parece que la planta brilla con un color azul intenso cuando se expone a esta longitud de onda específica de luz. **Comparación:** * El contraste entre las dos imágenes destaca las características únicas de la fluorescencia del hierro pana de terciopelo. * Bajo condiciones de luz diurna, la planta exhibe su coloración verde natural, mientras que bajo iluminación UV-A, adquiere un aspecto azul radiante. – Spanish translation

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