Mirrors serve as the primary optical system.


The mirrors in kaleidoscopes are the primary optical system. Kaleidoscopes typically have more than two mirrors. The objective is to reflect the items inside the tube into a variety of shapes.

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Did you Know? The origin of word 'cake' is from 'Kake'.


In a prison, the first mass-produced toothbrush prototype was created.

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Doctor Strange from the 1970s

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In Rio, street art is legal.

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Did you Know? There might be gold in Virginia.

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Custard apple detox

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Making a vision board increases your chances of success.


Constellations Are Star Patterns In The Night Sky

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Unless the author is already well-known, book readings and signings are not profitable.

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Did you Know? There are 170 museums in London.


It’s illegal to hold salmon under suspicious circumstances


Scientists are still perplexed as to why people have diverse blood types in the first place.

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Queen Victoria’s birthplace is now home to William and Kate

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The mouth of a sea urchin is referred to as "Aristotle's Lantern."

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The center of Spain

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Did you Know? Only one man is authorised to paint the Rolls Royce coach line.


Bali is a volcanically active island.

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Did you Know? Cambodians celebrate the New Year in April

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The price of earthen pots is reasonable, and they are available everywhere.

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Typically, yetis are thought to have dark hair.

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A shoreline that stretches for miles

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Did you Know? Forest covers more than half of South Korea.

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Long before Einstein, Galileo wrote about relativity.

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Did you Know? "Ladakh has the highest bridge in the world"

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A black hole cannot be seen directly.