Slice of star fruit (Carambola) when exposed to regular ...

The image presents a comparative display of a star fruit slice under two lighting conditions: regular daylight and UV-A blacklight illumination.

**Upper Image (Daylight)**

* The star fruit slice is positioned centrally within the frame.
* It is illuminated by natural light from above, casting no shadows.
* The fruit's yellow coloration is clearly visible, with some minor blemishes or imperfections along its surface.

**Lower Image (UV-A Blacklight)**

* The star fruit slice occupies a similar central position as in the upper image.
* However, this time it is exposed to UV-A blacklight from below, resulting in an intense blue glow that permeates the entire image.
* The yellow coloration of the fruit has transformed into a vibrant blue hue, with some areas appearing more intensely blue than others.
* The surface of the fruit exhibits no visible blemishes or imperfections under this lighting condition.

**Overall Observation**

The star fruit's appearance changes dramatically when exposed to UV-A blacklight. While it retains its natural yellow coloration in daylight, it transforms into a striking blue hue under UV illumination. This phenomenon is likely due to the presence of fluorescent pigments within the fruit that absorb UV light and emit blue light upon excitation. The contrast between the two images highlights the unique properties of this fruit and its responsiveness to different types of lighting. – AI vision