Jac Jacobsen (1901-1966) It is the father of Luxo, which later became Naska Loris, the famous lamp 1937 become a design icon much to also be mascot of the famous production company Pixar since 1986.

The villa it houses some. They were at the time you think, and they are used even today, both bedside and as leading lights in the ceiling instead of lamps and the like. In the photo you can see the cheeky and colorful Naska Loris original of the time still faithfully in place. Everything reflected and still reflects the architect's original intention today.

But what is their being ‘ cheeky’ and at the same time an archetype? Barbara Canoci, who writes, comes to our aid: ” here it's unveiled the mathematical law behind all lamps with spring-balanced arms.

This is the 'application of the so-called "articulated quadrilateral", in which the sum of the shorter rod lengths and the longer one is less than or equal to the sum of the lengths of the other two rods.

In reality, the arm of this kind of lamps is formed by two articulated parallelograms coupled, ie by two articulated quadrilateral in which opposing rods are of equal length, and consequently always remain parallel to each other. That is why the lamp in question can be moved in up-down and forward-backward without changing the reflector which always moves parallel to itself. https://www.home.vintag.store/post/le-forme-di-jac-jacobsen-leggi-matematiche-e-luce

Simple, no?