Original Meaning of a Deck of Playing Cards





52 cards for 52 weeks in the year.
2 colors for day and night
4 suits for the 4 seasons and 13 weeks per season.
Twelve court cards representing the 12 months.

If we add each of the cards (ace + ace + ace + ace + two + two + three + seven + eight ... and etc) of the game we will get 364.

The card game is an agricultural calendar that told us about the weeks and the seasons.

With each new season, it was King's week, followed by Queen's week, Jack's and so on until AS week changed seasons and we started over with a new color.


Jokers were used in leap years.

How Da Vinci 'Augmented Reality'—More Than 500 Years Ago [via Nina Reznick]

 

Video by The Atlantic

We may think of Leonardo Da Vinci as an artist, but he was also a scientist. By incorporating anatomy, chemistry, and optics into his artistic process, Da Vinci created an augmented reality experience centuries before the concept even existed. This video details how Da Vinci made the Mona Lisa interactive using innovative painting techniques and the physiology of the human eye.

Read more about the science behind the Mona Lisa on The Atlantic.