Which feature on the $50 bill glows yellow under ultraviolet light?

Which feature on the $50 bill glows yellow under ultraviolet light?

• A. Raised ink printing
• B. Color shifting ink
• C. Watermark
• D. Security Thread

Answer: (D)

Under ultraviolet light, currency security features are designed to reveal themselves with a distinct glow to confirm authenticity. The glowing element on the fifty-dollar bill is the security thread, which is embedded in the paper and runs vertically. When exposed to UV light, this thread lights up in a yellow color, making it easy to verify the bill’s legitimacy. The other features don’t glow under UV: raised ink printing is a tactile detail you feel, the watermark is visible when held up to light, and color-shifting ink changes color with angle in ordinary light, not a UV glow. So the glowing yellow feature under UV light is the security thread.

Under ultraviolet light, currency security features are designed to reveal themselves with a distinct glow to confirm authenticity. The glowing element on the fifty-dollar bill is the security thread, which is embedded in the paper and runs vertically. When exposed to UV light, this thread lights up in a yellow color, making it easy to verify the bill’s legitimacy. The other features don’t glow under UV: raised ink printing is a tactile detail you feel, the watermark is visible when held up to light, and color-shifting ink changes color with angle in ordinary light, not a UV glow. So the glowing yellow feature under UV light is the security thread.