A Buddha-altar isn't only a place to honor one's ancestors. Within the altar, there is an area where Mt. Sumeru (the mountain at the center of the Buddhist cosmology) is represented and in the center of that area the main image is enshrined.
The discovery of calculus is often attributed to two men, Isaac Newton(natural philosopher) and Gottfried Leibniz (philosopher, logician) , who independently developed its foundations. This photo is of Isaac Newton.
Calculus Derivatives and Limits Reference Sheet - Includes Chain Rule, Product Rule, Quotient Rule, Definition of Derivatives, and even the Mean Value Theorem. Great resources for those in Calculus 1 or even AP Calculus AB.
About the Golden Ratio: The Golden Ratio can be illustrated within special dimensions of Sprials, Triangles and Rectangles where the ratio of the length of the short side to the long side is was noted by ancient Greek architects as the most visually