What is hidden in 3D image?

Stereogram - 3D Image

#brainteasers #stereogram #3Dimage

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No one believed Edison

“At first no one believed Edison when he said he'd made an electric bulb. They dismissed it as a filament of his imagination.”

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Sprinkler head patent

In 1874, Harry S. Parmelee of New Haven, Conn. received a patent for the sprinkler head.

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