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The decoder pen, yes-no pen, yes-know pen or magic pen book is a combination of decoder pen or marker specially designed to reveal invisible ink-encoded pictures or writing, [1] in the form of answers to questions or hidden parts of pictures, with specially created children's books with hidden words and pictures. They were most popular in the ...
Satellite photograph of a mesa in the Cydonia region of Mars, often called the "Face on Mars" and cited as evidence of extraterrestrial habitation. Pareidolia (/ ˌ p ær ɪ ˈ d oʊ l i ə, ˌ p ɛər-/; [1] also US: / ˌ p ɛər aɪ-/) [2] is the tendency for perception to impose a meaningful interpretation on a nebulous stimulus, usually visual, so that one detects an object, pattern, or ...
The same image viewed by white, blue, green, and red lights reveals different hidden numbers. Steganography (/ ˌ s t ɛ ɡ ə ˈ n ɒ ɡ r ə f i / ⓘ STEG-ə-NOG-rə-fee) is the practice of representing information within another message or physical object, in such a manner that the presence of the concealed information would not be evident to an unsuspecting person's examination.
The first few of these hidden picture puzzles are Easter-themed. Eyewear company Feel Good Contacts challenges you to find the chick among the daffodils—and there are a whole lot of daffodils ...
Invisible ink is sometimes used to print parts of pictures or text in books for children to play with, always including a "decoder pen" which is used to show the invisible parts of texts or pictures, thus revealing answers to questions printed in regular ink or completing missing parts of pictures.
The trick is, the theme is itself one of the words hidden in the grid. To find terms, click and drag the letters in order to spell out said word. Once a puzzler finds a word that fits the theme ...
St. Patrick’s Day word searches. Coins, leprechauns, luck, rainbows, everything green, oh my! Try to find all of the words in the three St. Patrick’s Day word searches below.
The word "FAKE" hidden within an AI-generated image of a naval battle. Hidden messages can be created in visual mediums with techniques such as hidden computer text and steganography. In the 1980s, Coca-Cola released in South Australia an advertising poster featuring the reintroduced contour bottle, with a speech bubble, "Feel the Curves!!"