(Roughly) Daily

“Nothing in a portrait is a matter of indifference”*…


This unique self-portrait, also known as “view from the left eye”, is the creation of Austrian physicist and philosopher Ernst Mach, noted for his contributions to physics such as the Mach number (which relates an object’s speed to the speed of sound) and the study of shock waves. The sketch appears in Mach’s The Analysis of Sensations, first published in German in 1886 as Beiträge zur Analyse der Empfindungen, and is used to illustrate his ideas about self-perception.

The considerations just advanced, expressed as they have been in an abstract form, will gain in strength and vividness if we consider the concrete facts from which they flow. Thus, I lie upon my sofa. If I close my right eye, the picture represented in the accompanying cut is presented to my left eye. In a frame formed by the ridge of my eyebrow, by my nose, and by my moustache, appears a part of my body, so far as visible, with its environment. My body differs from other human bodies beyond the fact that every intense motor idea is immediately expressed by a movement of it, and that, if it is touched, more striking changes are determined than if other bodies are touched by the circumstance, that it is only seen piecemeal, and, especially, is seen without a head. If I observe an element A within my field of vision, and investigate its connexion with another element B within the same field, I step out of the domain of physics into that of physiology or psychology, provided B, to use the apposite expression of a friend of mine made upon seeing this drawing, passes through my skin. Reflexions like that for the field of vision may be made with regard to the province of touch and the perceptual domains of the other senses…

More at “Self-Portrait by Ernst Mach (1886).”

* Charles Baudelaire


As we study ourselves studying ourselves, we might send ingenious birthday greetings to a man whose work gave Mach’s namesake speed measure a real workout: Clarence Leonard “Kelly” Johnson; he was born on this date in 1910.  A storied aeronautical engineer, He contributed to the design of 40 aircraft, from the P-38 Lightning fighter and the Hudson bomber to the U-2 spy plane and the F-104 Starfighter interceptor.

But Johnson is probably best remembered as the founding leader of Lockheed’s Skunk Works, a development group that has become a model in the business, engineering, and technical arenas of an effective approach to innovation– a group with a high degree of autonomy within an organization, unhampered by bureaucracy, tasked with working on advanced or secret projects.


Written by LW

February 27, 2016 at 1:01 am

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