In certain conditions, the white walls at home take on the character of a light box. In traditional Japanese architecture the intensity of atmosphere has a lot to do with the way natural light is filtered through the shoji paper panels, suffusing the interior spaces with subdued light, calming the spirit and sharpening the senses.
In optics, a caustic is the envelope of light rays reflected or refracted by a curved surface or object, or the projection of that envelope of rays on another surface. The caustic is a curve or surface to which each of the light rays is tangent, defining a boundary of an envelope of rays as a curve of concentrated light.
A piece of milled plexiglass acting as a projecting lens; via the Computer Graphics and Geometry Lab at the École Polytechnique Fédérale de Lausanne
New milling techniques applied to glass and plexiglass panels could be used to “create windows that are also cryptic projectors, summoning ghostly images from sunlight.”
[Pauly and Bompas] hope that the technique will be used in architectural design, to create windows that mould sunlight and throw images or patterns onto walls or floors,” which, if timed, milled, and manipulated just right, could produce a slowly animated sequence of images being projected by an otherwise empty window during different times of day.
To control the shape of a caustic pattern generated by a specular or refractive surface, we need to solve the inverse problem: how can we change the surface geometry, such that incident light is redirected to produce a desired caustic image?
A basic structural design underlies every kind of writing.
Writing, to be effective, must follow closely the thoughts of the writer, but not necessarily the order in which those thoughts occur. This calls for a scheme of procedure. In some cases, the best design is no design, as with a love letter, which is simply an outpouring, or with a casual essay, which is a ramble. But in most cases, planning must be a deliberate prelude to writing.
The more clearly the writer perceives the shape, the better are the chances of success.
When a sentence is made stronger, it usually becomes shorter.
Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary sentences, for the same reason that a drawing should have no unnecessary lines and a machine no unnecessary parts. This requires not that the writer make all sentence short, or avoid all detail and treat subjects only in outline, but that every word tell.
This principle, that of parallel construction, requires that expressions similar in content and function be outwardly similar.
Blessed are the poor in spirit; for theirs in the kingdom of Heaven.
Blessed are they that mourn; for they shall be comforted.
Blessed are the meek; for they shall inherit the earth.
Here we leave solid ground. Who can confidently say what ignites a certain combination of words, causing them to explode in the mind? Who knows why certain notes in music are capable of stirring the listener deeply, though the same notes slightly rearranged are impotent? These are high mysteries, and this chapter is a mystery story, thinly disguised. There is no satisfactory explanation of style, no infallible guide to good writing, no assurance that a person who thinks clearly will be able to write clearly, no key that unlocks the door, no inflexible rule by which writers may shape their course. Writers will often find themselves steering by stars that are disturbingly in motion.
Design informs even the simplest structure, whether of brick and steel or of prose.
Even the kind of writing that is essentially adventurous and impetuous will on examination be found to have a secret plan: Columbus didn’t just sail, he sailed west, and the New World took shape from this simple and, we now think, sensible design.
When you overstate, readers will be instantly on guard, and everything that has preceded your overstatement as well as everything that follows it will be suspect in their minds because they have lost confidence in your judgment or your poise.
A single overstatement, wherever or however it occurs, diminishes the whole.
The proper place in the sentence for the word or a group of words that the writer desires to make most prominent is usually the end.
The principle that the proper place for what is to be made most prominent is the end applies equally to the words of a sentence, to the sentences of a paragraph, and to the paragraphs of a composition.
Young writers often suppose that style is a garnish for the meat of prose, a sauce by which a dull dish is made palatable. Style has no such separate entity; it is nondetachable, unfilterable. The beginner should approach style warily, realizing that it is an expression of self, and should turn resolutely away from all devices that are popularly believed to indicate style - all mannerisms, tricks, adornments. The approach to style is by way of plainness, simplicity, orderliness, sincerity.
The young writer should learn to spot them - words that at first glance seem freighted with delicious meaning but that soon burst in air, leaving nothing but a memory of bright sound.