Have you ever heard of the “Golden Ratio”?  It’s the name given when the ratio between two dimensions equals approximately 1.618 (or for you mathematicians  ) . Example: a rectangle that is 3 inches by 4.85 inches (don’t 3 x 5 cards just seem perfect?).  More recently it has been represented by the 21st letter of the Greek alphabet phi, ϕ (sounds like fi in “fee-fi-fo-fum”). For over 2000 years, people have been fascinated by this ratio; it shows up in nature, including plants and according to Luca Pacioli back in the 15th century, the human face.  It is generally thought to be a very aesthetically appealing ratio and has been used in architecture and art for centuries.  Some of Lantronix’ good-looking products are close to the golden ratio.  Coincidence?

For more on this fun subject: https://en.wikipedia.org/w/index.php?title=Golden_ratio&printable=yes

For a calculator: https://www.mathopenref.com/rectanglegolden.html

Parthenon Golden Ratio