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A pencil-beam radar A moving or sweeping pencil-beam radar. In optics, a pencil or pencil of rays, also known as a pencil beam or narrow beam, is a geometric construct (pencil of half-lines) used to describe a beam or portion of a beam of electromagnetic radiation or charged particles, typically in the form of a cone or cylinder.
HTML Form format HTML 4.01 Specification since PDF 1.5; HTML 2.0 since 1.2 Forms Data Format (FDF) based on PDF, uses the same syntax and has essentially the same file structure, but is much simpler than PDF since the body of an FDF document consists of only one required object. Forms Data Format is defined in the PDF specification (since PDF 1.2).
Historically, multiple approaches were suggested to address the reflection of the structure in the appearance of the architectural form. In the 19th-century Germany, Karl Friedrich Schinkel suggested that the structural elements shall remain visible in the forms to create a satisfying feeling of strength and security, [3] while Karl Bötticher as part of his "tectonics" suggested splitting the ...
A block from which the diagonal ribs of a vault spring or start. The top of the springer is known as the skewback. [19] Cross-wing A wing attached to a main or original house block, its axis at right angles to the original block, and often gabled. Crypt A stone chamber beneath the floor of a church or other building.
An architectural drawing or architect's drawing is a technical drawing of a building (or building project) that falls within the definition of architecture.Architectural drawings are used by architects and others for a number of purposes: to develop a design idea into a coherent proposal, to communicate ideas and concepts, to convince clients of the merits of a design, to assist a building ...
A recent development are computer-controlled stigmators, which usually use the Fourier transform of the image to find the ideal stigmator setting. The Fourier transform of an astigmatic image is usually elliptically shaped. [13] For a stigmatic image, it is round, this property can be used by algorithms to reduce the astigmatic aberration. [4]
The following outline is an overview and topical guide to architecture:. Architecture – the process and the product of designing and constructing buildings. Architectural works with a certain indefinable combination of design quality and external circumstances may become cultural symbols and / or be considered works of art.
An example of mutesaki tokyō using six brackets. Tokyō (斗栱・斗拱, more often 斗きょう) [note 1] (also called kumimono (組物) or masugumi (斗組)) is a system of supporting blocks (斗 or 大斗, masu or daito, lit. block or big block) and brackets (肘木, hijiki, lit. elbow wood) supporting the eaves of a Japanese building, usually part of a Buddhist temple or Shinto shrine. [1]