Doug Kerr
Well-known member
In the biography of Melanija Knavs (Melania Knauss, now Melania Trump) by Bojan Pozar and Igor Omerza, it is reported that:
Just what is "descriptive geometry"? Descriptive geometry is the theoretical geometrical underpinning of engineering, architectural, and technical drawing.
It heavily deals with the matter of projection, such as is used in the preparation of orthographic projections, the common "three-view" form of showing a three-dimensional object in, for example, a manufacturing drawing. It also deals with the theoretical bases of various ways of representing a three-dimensional object in such single-view ways as isometric projection and perspective projection.
This discipline is important in many ways related to photography and the design of imaging systems. Some of its precepts are employed in my recent discussions of the infamous "Mike Pence and family at Chili's" photograph.
In the freshman year of my own engineering degree program, in 1953-54, I took a mandatory two-semester series in engineering drawing. The first semester was a course in Descriptive Geometry. I aced that course, receiving a final grade basis of 100% - supposedly the only student over the years at that institution to have attained that perfect grade.
The second semester was a course in Basic Engineering Drawing. That was more of a problem for me, not insofar as the theory or my grasp of the various and often arcane conventions, but rather my drawings were "messy". When completed, they had an overall background of irregular light gray, the result of pencil lead being smeared across the vellum medium. My grade there was very poor, almost failing.
Fortunately, in my engineering career, I rarely had to prepare formal engineering drawings myself. They were instead usually executed by skilled drafters, working from my sketches.
Best regards,
Doug
In her freshman year, the 19-year old Melanija Knavs attended lectures [at the University of Lubljana, in Slovenia] on the following subjects: elements of architecture, fine arts, fundamentals of technical mechanics, architectural construction, descriptive geometry, mathematics, and an ideological (read “communist”) elective credit called “General Partisan Resistance and Social Self-protection”.
Just what is "descriptive geometry"? Descriptive geometry is the theoretical geometrical underpinning of engineering, architectural, and technical drawing.
It heavily deals with the matter of projection, such as is used in the preparation of orthographic projections, the common "three-view" form of showing a three-dimensional object in, for example, a manufacturing drawing. It also deals with the theoretical bases of various ways of representing a three-dimensional object in such single-view ways as isometric projection and perspective projection.
This discipline is important in many ways related to photography and the design of imaging systems. Some of its precepts are employed in my recent discussions of the infamous "Mike Pence and family at Chili's" photograph.
In the freshman year of my own engineering degree program, in 1953-54, I took a mandatory two-semester series in engineering drawing. The first semester was a course in Descriptive Geometry. I aced that course, receiving a final grade basis of 100% - supposedly the only student over the years at that institution to have attained that perfect grade.
The second semester was a course in Basic Engineering Drawing. That was more of a problem for me, not insofar as the theory or my grasp of the various and often arcane conventions, but rather my drawings were "messy". When completed, they had an overall background of irregular light gray, the result of pencil lead being smeared across the vellum medium. My grade there was very poor, almost failing.
Fortunately, in my engineering career, I rarely had to prepare formal engineering drawings myself. They were instead usually executed by skilled drafters, working from my sketches.
Best regards,
Doug