An ancient manuscript is discovered with pages that seem blank. However, when exposed to sunlight, words appear. What is the secret?
Category: Mystery · Difficulty: expert
Hint: Think about how certain inks react to light.
Answer
The manuscript uses UV ink that reveals its text when illuminated.
Explanation
The use of UV ink allows the text to remain hidden until exposed to the right light, revealing its contents.
This is a expert mystery riddle — one of the harder riddles here. The answer is The manuscript uses UV ink that reveals its text when illuminated..
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