THE 城堡 GUARD WITH HIS TRIDENT
How many prongs do 你 see?
I see two on the bottom—but on the top, three
Solution: Cover the 最佳, 返回页首 of the trident and 你 see two prongs. Cover the bottom and the trident now has three prongs. 你 can draw this object, but 你 can’t construct it. (impossible-object illusion)
THE ROYAL MESSENGER ARRIVING WITH A LETTER FOR THE KING
The red tape on the letter is longer than the blue. But is this really true? Remember, now 你 are in OPT!
Solution: Angles are sometimes tricky! The red and blue tapes on the envelope are the same length. If 你 remove the outline of the envelope, 你 can see this. (geometrical-contrast illusion)
THE PRINCESS PICKING A SPECIAL BOUQUET
花 fair, 花 bright.
Which 花 center is larger—the black 或者 the white?
Solution: The black and white centers are the same size. The white center appears smaller because larger circles surround it. The black center appears larger because smaller circles surround it. (geometrical-contrast illusion)
THE OPT SIGN POINTING THE WAY TO THE ZOO
由 the sign the royal family will stop. Which line is longer, the bottom 或者 top?
Solution: Both lines are the same length. When the arrows point outward, the line appears shorter. When the arrows point inward, the line appears longer. (geometrical-contrast illusion)
THE BIRTHDAY PARTY FOR THE PRINCE
This gift, unwrapped, tells the Prince’s age.
This is what the dragon said,
“Six blocks become seven if 你 stand on your head. HAPPY BIRTHDAY!”
Solution: You don’t have to stand on your head! If 你 turn the book around, 你 should see seven blocks with white tops. The number of blocks 你 see depends on whether 你 view the boxes as having a white 最佳, 返回页首 或者 a white bottom. (reversible-image illusion)
How many prongs do 你 see?
I see two on the bottom—but on the top, three
Solution: Cover the 最佳, 返回页首 of the trident and 你 see two prongs. Cover the bottom and the trident now has three prongs. 你 can draw this object, but 你 can’t construct it. (impossible-object illusion)
THE ROYAL MESSENGER ARRIVING WITH A LETTER FOR THE KING
The red tape on the letter is longer than the blue. But is this really true? Remember, now 你 are in OPT!
Solution: Angles are sometimes tricky! The red and blue tapes on the envelope are the same length. If 你 remove the outline of the envelope, 你 can see this. (geometrical-contrast illusion)
THE PRINCESS PICKING A SPECIAL BOUQUET
花 fair, 花 bright.
Which 花 center is larger—the black 或者 the white?
Solution: The black and white centers are the same size. The white center appears smaller because larger circles surround it. The black center appears larger because smaller circles surround it. (geometrical-contrast illusion)
THE OPT SIGN POINTING THE WAY TO THE ZOO
由 the sign the royal family will stop. Which line is longer, the bottom 或者 top?
Solution: Both lines are the same length. When the arrows point outward, the line appears shorter. When the arrows point inward, the line appears longer. (geometrical-contrast illusion)
THE BIRTHDAY PARTY FOR THE PRINCE
This gift, unwrapped, tells the Prince’s age.
This is what the dragon said,
“Six blocks become seven if 你 stand on your head. HAPPY BIRTHDAY!”
Solution: You don’t have to stand on your head! If 你 turn the book around, 你 should see seven blocks with white tops. The number of blocks 你 see depends on whether 你 view the boxes as having a white 最佳, 返回页首 或者 a white bottom. (reversible-image illusion)