Light & Illumination
159. Light on Two Sides of Every Room
Only a moment of light
A vaporous middle-world
Light and Space
The gentle light of shoji screens
Le Corbusier, the greatest architect of the last century, noted that 'architecture is the learned game, correct and magnificent, of forms assembled in light', demonstrating to what extent light has been prioritized in the Western tradition. Tanizaki, on the other hand, spoke of the important of shadows, of extended eaves. Rather than the light that shines directly into a room, he praised the soft light that penetrates a space after being reflected off the floor, and again from the ceiling.
...In Japanese architecture, the gentle light that passes through shoji screens serves a key purpose. It reaches right to the back of the room, so that the space feels bright, even without the aid of artificial light. The soft light filtering through the white film at Takanawa Gateway Station represents a form of light that was forgotten about by Japanese Modernism.
Irwin Fluorescents
In order: Kenny Price, Blue Lou, Legacy, Fourfold, Niagara.
Irwin has explained that he decided to use the fluorescent tubes in the "dumbest" way possible, but, as one critic cautioned, "dumb, it turns out, has a special meaning for him: It's a form so simple that you end up not paying attention to it as a form." Irwin's interest was, rather, in the range of light, color, reflection, and shadow interaction made possible by combining tubes with different hues and finishes by wrapping them with theatrical gels.
Frosted and transparent
Irwin's window arrangement at the Dia:Beacon.
In addition to managing the flow of people in the spaces of the museum in order to maximize freedom of movement and choice, Irwin also modified the industrial window grids to create perceptual ambiguity, placing transparent glass in the inner four panes while using frosted glass for the outer panes. With this, Irwin solved the problem of either having the windows become a wall of glaring light, if all transparent glass was used, or having them become a claustrophobic muffling of space, if all frosted glass was used. Irwin's windows catch the eye in a back and forth oscillation between distant and proximal focus.
A time when time was not
Darkness cannot say: “I precede the coming light”, but there is a sense in which light can say, “Darkness preceded me”.
Doubtless there is an event, X, in the future, by reference to which we may say that we are at present in a category of Not-X, but until X occurs, the category of Not-X is without reality. Only X can give reality to Not-X; that is to say, Not-Being depends for its reality upon Being. In this way we may faintly see how the creation of Time may be said automatically to create a time when Time was not, and how the Being of God can be said to create a Not-Being that is not God.
Waiting to repay the gift of vision
Like a forest or a garden or a field, an honest page of letters can absorb – and will repay – all the attention it is given. Much type now, however, is delivered to computer screens. It is a good deal harder to make text truly legible on screen than to render streaming video. Both fine technology and great restraint are required to make the screen as restful to the eyes as ordinary paper.
The underlying problem is that the screen mimics the sky instead of the earth. It bombards the eye with light instead of waiting to repay the gift of vision – like the petals of a flower, or the face of a thinking animal, or a well-made typographic page. And we read the screen the way we read the sky: in quick sweeps, guessing at the weather from the changing shapes of clouds, or in magnified small bits, like astronomers studying details. We look to it for clues and revelations more than wisdom. This makes it an attractive place for the open storage of pulverized information – names, dates, or library call numbers, for instance – but not so good a place for thoughtful text.
Darkness becomes you
Searle: In psych tests on deep space, I ran a number of sensory deprivation trials, tested in total darkness, on floatation tanks - and the point about darkness is, you float in it. You and the darkness are distinct from each other because darkness is an absence of something, it's a vacuum. But total light envelops you. It becomes you.
White walls
When people say that white walls are cold and characterless, I wonder whether they have ever stopped to look at one. It's not just about the drama of light and shadow, although I love the fragment of the ghost chair in this picture, but the way the smallest nuances of texture and tone come alive in certain conditions.
Lights and lamps
The street of an old town
How much more mysterious and inviting is the street of an old town with its alternating realms of darkness and light than are the brightly and evenly lit streets of today! Homogenous bright light paralyzes the imagination in the same way that homogenization of space weakens the experience of being, and wipes away the sense of place. The human eye is most perfectly tuned for twilight rather than bright daylight.
Desired qualities of light
In today's architectural practice, light is regrettably often treated merely as a quantitative phenomenon; design regulations and standards specify required minimum level of illumination and window sizes, but they do not define any maximum levels of luminance, or desired qualities of light, such as its orientation, temperature, color, or reflectedness.
Daylight should not tyrannize architecture
Daylight should not tyrannize architecture. As with so many aspects of the design of the city, light is something that should be available in a variety of modulations and susceptible to a variety of controls. However, the prejudice must always be for access.
Without effective eyes to see, does a light cast light?
Street lights can be like that famous stone that falls in the desert where there are no ears to hear. Does it make a noise? Without effective eyes to see, does a light cast light? Not for practical purposes.
135. Tapestry of Light and Dark
Problem
In a building with uniform light level, there are few “places” which function as effective settings for human events. This happens because, to a large extent, the places which make effective settings are defined by light.
Solution
Create alternating areas of light and dark throughout the building, in such a way that people naturally walk toward the light, whenever they are going to important places: seats, entrances, stairs, passages, places of special beauty, and make other areas darker, to increase the contrast.
Salk Institute for Biological Studies, La Jolla, 1959–65
If you are there at sunset, as are the scientists every day, you see the most magical of transformations: the golden glow that fills the sky to the west is first reflected in the water of the ocean and then shoots like a line of fire up through the gathering darkness of the plaza's stone floor, to reach its source in the cubic fountain. The court is breathtaking in its sublime power, opening at the edge of the continent to the Pacific Ocean and framing the light blue-on-dark-blue horizon line of the sea and sky.
Let there be light
And it came to pass that AC learned how to reverse the direction of entropy. But there was now no man to whom AC might give the answer of the last question. No matter. The answer – by demonstration – would take care of that, too.
For another timeless interval, AC thought how best to do this. Carefully, AC organized the program.
The consciousness of AC encompassed all of what had once been a Universe and brooded over what was now Chaos. Step by step, it must be done.
And AC said, "LET THERE BE LIGHT!"
And there was light.
If you look for the light
If you look for the light,
you can often find it.
But if you look for the dark,
that is all you will ever see.— Uncle Iroh
Darkling in the eternal space
The bright sun was extinguish'd, and the stars
Did wander darkling in the eternal space,
Rayless, and pathless, and the icy earth
Swung blind and blackening in the moonless air;
Morn came and went—and came, and brought no day.Wasting light
Yamamoto Sanehiko, president of the Kaizo publishing house, told me of something that happened when he escorted Dr. Einstein on a trip to Kyoto. As the train neared Ishiyama, Einstein looked out the window and remarked, "Now that is terribly wasteful." When asked what he meant, Einstein pointed to an electric lamp burning in broad daylight.
And the truth of the matter is that Japan wastes more electric light than any Western country except America.
- Poured
The great soundless whirl of darkness
I could not know that even then the little light was being drawn irresistibly into the great soundless whirl of darkness and that I was watching a light that was destined soon to blink out and disappear.
In the world of sunlight
And here we come back to that forgotten, outcast word, the soul.
Indeed, the soul possesses an inner light, the light that an inner vision knows and expresses in the world of brilliant colors, in the world of sunlight.
Midwest sunset
For those who've never experienced a sunrise in the rural Midwest, it's roughly as soft and romantic as someone's abruptly hitting the lights in a dark room. This is because the land is so flat that there is nothing to impede or gradualize the sun's appearance. It's just all of a sudden there.
In Praise of Shadows
A Book by Jun'ichirō Tanizaki & Thomas J. Harper- Things that shine and glitter
- A naked bulb
- The Japanese toilet
- Empty dreams
- Most important of all are the pauses
The Finish Fetish Artists
An EssayFor others, perhaps especially those artists who worked with light and transparency and were involved in the birth of the Light and Space Movement, an immaculate surface is a prerequisite. Helen Pashgian explained this very clearly:
“On any of these works, if there is a scratch... that’s all you see. The point of it is not the finish at all – the point is being able to interact with the piece, whether it is inside or outside, to see into it, to see through it, to relate to it in those ways. But that’s why we need to deal with the finish, so we can deal with the piece on a much deeper level”.
The importance of a pristine surface calls for a very low tolerance to damage by the artists. The feeling is shared by Larry Bell:
“I don’t want you to see stains on the glass. I don’t want you to see fingerprints on the glass... I don’t want you to see anything except the light that’s reflected, absorbed, or transmitted”
Perfectly Clear (Ganzfield)
An Artwork by James TurrellThe light that hits the glass
A Quote by Larry BellMy media isn’t glass, it’s the light that hits that glass.
How the light gets in
A Quote by Leonard CohenThere is a crack in everything.
That's how the light gets in.Light & Shadow
An Artwork by Kumi YamashitaCHAIR, 2014
FRAGMENTS, 2009I sculpt using both light and shadow. I construct single or multiple objects and place them in relation to a single light source. The complete artwork is therefore comprised of both the material (the solid objects) and the immaterial (the light or shadow).
Seeing With Fresh Eyes
Meaning
Space
Data
Truth
The problem with trees
Many systems are organized hierarchically. The CERNDOC documentation system is an example, as is the Unix file system, and the VMS/HELP system. A tree has the practical advantage of giving every node a unique name. However, it does not allow the system to model the real world. For example, in a hierarchical HELP system such as VMS/HELP, one often gets to a lead on a tree such as:
HELP COMPILER SOURCE_FORMAT PRAGMAS DEFAULTS
only to find a reference to another leaf: Please see
HELP COMPILER COMMAND OPTIONS DEFAULTS PRAGMAS
and it is necessary to leave the system and re-enter it. What was needed was a link from one node to another, because in this case the information was not naturally organized into a tree.
Content-responsive space
Content-responsive spaces in text can be as meaningful as spaces and line breaks in computer code, poetry, math, dialogues, cartoons.
For 1500 years, printed text has used grids indifferent/hostile to meaning. Content-responsive grids are better than imperious grid-possessed layouts. To clarify and intensity meaning, authors and editors can remodel relations between spaces and words...insisting on control of line breaks by authors (who, after all, know the content).
Personal annotations
Yehudi Menuhin, a great violinist, marked up a score for Bach's Sonata No. 2 for Solo Violin. Penciled annotations show real-time performance strategies. To outsiders, insider markups appear chaotic and cryptic, but these personal annotations are for Menuhin's eyes, the only eyes that matter. All can learn from this useful workaday grid strategy: a relevant and intense data layer can become a coherent substrate scaffold upon which to overlay additional information. Maps do this all day long.
What excellence is
Learn what excellence is, how to identify it...This is not a big reading assignment – excellence is scarce, lognormal, long-tailed. Acting on this knowledge is liberating, freeing oneself from vast piles of triviality, knock-offs, petty connoisseurship, over-publishing, and the short-sighted, trendy, greedy. Excellence is long-term knowledge, even forever knowledge.
Excellence, like good taste, is perhaps a universal quality. Analytical thinking is about the relationship between evidence and conclusions, and is fundamental to all empirical work, regardless of field, discipline, specialty. Thus it is possible at times to assess credibility of nonfiction work without being a content expert. Thinking eyes may well have an eye for excellence, regardless of field or discipline.
Sentences and words do not exist by themselves
Sentences and words do not exist by themselves, but have natural, inevitable, unavoidable interactions with their surrounding spaces, words, and other sentences. Sentences are not independent of their spatial context, and interactions can create meanings and harms. Sentences survive content-indifferent and content-hostile spacings, but surviving is not thriving. Text space should not be owned and governed by generic productions grids, which make for convenient production but inconvenient meaning. Space can and should be content-responsive, actively contributing to meaning – forever practices in poetry, maps, math, computer code, comics, theater/movie scrips, posters. Subtle visual spacing differentiates and clarifies sentences, and meaning becomes more consequential, memorable, retrievable.
Central-axis text
Central-axis provides a clear signal of the next line, so that readers and speakers don't have to search on the left margin, sometimes accidentally skipping down a line. Ragged-left typography is used for dialogue in novels and scripts. In central-axis, each line is activated at both left and right margins – unlike squared-off conventional text. Readers/speakers are aware of the length of the next line at both its beginning and end. That knowledge may also help readers detect the pace and rhythm of the words, as in reading poetry aloud.
Idiosyncratic paragraphs
Text-only paragraphs differ from one another only in their words. All the words are typographically the same – typeface, spacings, line-lengths piled up into long deep columns. Systematic regularity of text paragraphs is universally inconvenient for readers, who are unable to find and read once against a specific string of words in previously-read paragraphs. All readers have encountered this problem in essays, articles, novels, news reports. Idiosyncratic paragraphs assist memory and retrieval by readers, by uniquely activating the relevant neural substrates for retaining visual memories. Nearly every paragraph in this book is deliberately unique.
No more LittleDataGraphics
Small data sets should be shown directly...LittleDataGraphics (pie charts, bar charts) translate and encode data into areas and colors. Viewers must then mentally translate codes back into numbers. These codes are unique to the local sets of data graphics, and do not repay learning. Instead, just directly show numbers as numbers. No more LittleDataGraphics. Data visualizations are at their best when there is so much data that the only way to see it...is to see it.
An immense wordy diagram
In ~1560 Ettore Ausonia, a polymath with interests from mathematics to mirror-making, constructed an immense wordy diagram depicting reflections from concave spherical mirrors. Then, between 1592 and 1601, while teaching at the University of Padua, Galileo made this handwritten copy of the diagram, which was fortunate since Ausonio's original has since gone missing. Three helpful architectures for the off-the-grid sentences are deployed – word trees, stacklists, annotated linking lines.
Stacklists
Stacklists organize and clarify complex material in 2-space. Readers read more slowly, and that's good: to think, look again, and connect words vertically within each stack and horizontally between stacks. Instead of polyphony, conventional inline lists are a freight train of words along a one-way narrow track, making it difficult to identify which words belong to which list and to link and compare elements within and between lists.
Observe data collection at the moment of measurement
See, observe, learn how data are collected at moment and place of measurement. "You never learn more about a process than when you directly observe how data are actually measured," said Cuthbert Daniel, a superb applied statistician. See with fresh eyes. Walk around what you want to learn about. Talk to those who do measurements. See how numbers came to be.
Do those measuring know the desired answer? Are those measuring skilled, alert, honest, biased, incompetent, sloppy, tired and emotional?...Artifacts and errors in measurements measured? How are outliers adjudicated?
46 data quality issues in spreadsheets
Outcomes decide
High levels of U.S. patient satisfaction are mainly associated with hospitality (greeters at the door, empathetic staff, comfortable rooms) – but also with more treatments, high costs, and substantially higher mortality even after adjusting for baseline health and comorbidities. Several plausible stories explain these big n and replicated observational findings. Whatever the case, post-treatment patient satisfaction/gratitude does not measure whether a treatment works or not. Patient outcomes decide.
Which half?
One day when I was a junior medical student, a very important Boston surgeon visited the school and delivered a great treatise on a large number of patients who had undergone successful operations for vascular reconstruction. At the end of the lecture, a young student at the back of the room timidly asked, "Do you have any controls?" Well the great surgeon drew himself up to his full height, hit the desk, and said, "Do you mean did I not operate on half of the patients?" The hall grew very quiet then. The voice at the back of the room hesitantly replied, "Yes, that's what I had in mind." Then the visitor's fist really came down as he thundered, "Of course not. That would have doomed half of them to their death!" God, it was quiet then, and one could scarcely hear the small voice ask, "Which half?"
Good annotation
Information displays should be annotated, combining words, images, graphics, whatever it takes to describe and explain something. Annotation calls out and explains information and, at the same time, explains to viewers how to read data displays. Good annotation is like a knowledgeable expert/teacher at the viewer's side pointing and saying, "Now see how this works with that, how this might explain that..."
Signs seen and unseen
Direct instructions at point of need may encourage writers and programmers to divert diversions. Or not, because signs are seen only a few times before becoming unseen.
What is the strongest visual element?
Preparing to write the novel Catch 22, Joseph Heller composed a storyboard, a 2-dimensional list with 3,650 words arrayed in 34 × 21 = 714 interacting cells. Rows are ordered in time, and each row records when each character does what. Some cell entries are erased. It took 7 years to complete the novel's 758-page typescript.
The Catch 22 plotchart works better upon replacing optically noisy grids with ghost grids. Lightness of framing lines creates soft boundaries to maintain order and also allows words to spill across cells naturally...More generally, ask of information displays and interfaces, "What is the strongest visual element?" The correct answer is not "grid lines".
Your only language is vision
To see with fresh, uninstructed eyes and an open mind requires a deliberate, self-aware act by the observer. Abstract artworks represent themselves and should be first viewed for themselves. When looking at outdoor abstract pieces, concentrate initially on the unique optical experience produced by the artworks. See as the artist saw when making the piece.
A focus on optical experience does not deny stories, it postpones them. Viewing an artwork may evoke interesting narratives – or just tedious artchat recalling similar art or artists, concocting playful tales, realizing how scrap metal was repurposed into art, making judgments about the artist's intentions or character, or contemplating an artwork's provenance, price, politics. Let the artwork stand on its own. Walk around fast and slow, be still, look and see from
up down sideways close afar above below
, enjoy the multiplicity ofsilhouettes shadows dapples clouds airspaces sun earth glowing
. Your only language is vision.Lists consist of whatever it takes
Lists consist of whatever it takes – nouns, proper nouns, verbs, graphics, images, numbers.
...In lists, spaces have meaning, locating elements in relation to other elements. Lists are often free and independent from conventional rules of stylesheets / grammar / typography / punctuation. Lists also help us escape from the personal internalized mash-up stylesheets of every writer and reader – a continuous low-level background buzz checking to see if word usage, spelling, punctuation, grammar are 'correct'. Lists are all content – about the substance contained, not the container. An empirical theory here for reasoning about lists includes
selection of list items
list quality and completeness
comparing list models
comparing list architecturesNo wonder you think it's complicated
We were very proud of our user interface and the fact that we had a way to browse 16,000 (!!) pages of documentation on a CD-ROM. But browsing the hierarchy felt a little complicated to us.
So we asked Tufte to come in and have a look, and were hoping perhaps for a pat on the head or some free advice. He played with our AnswerBook for 90 seconds, turned around, pronounced his review:
"Dr. Spock's Baby and Child Care is a best-selling owner's manual for the most complicated 'product' imaginable – and it has only 2 levels of headings. You have 8 levels of hierarchy and I haven't stopped counting yet. No wonder you think it's complicated."
Verb List
Documents vs. decks
Decks are easier to prepare than documents, however. Documents require coherence, thinking, sentences. But convenience in preparing decks harms the content and the audience. Optimizing presenter convenience is selfish, lazy, and worst of all, replaces thinking.
Books are meant to be used
During most of the course students have their books open, either to read or to follow along. Students are encouraged to annotate the books: "Books are meant to be used. Dog-ear the pages, mark them up, put notes in the spacious margins."
Learning via teaching
The course material changes 15% each year, as the book currently in progress becomes part of the course years before it is finally published. I detect incoherencies and mistakes in the new material while teaching. This leads to refinements or even throwing stuff out from the forthcoming book. A good way to learn about something is to teach it.
Self-publishing, self-exemplifying
I sought to design [my first book] so as to make it self-exemplifying – that is, the physical object itself would reflect the intellectual principles advanced in the book. Publishers seemed appalled at the prospect that an author might govern design. Consequently I decided to self-publish the book.
...[Howard Gralla and I] spent the summer in his studio laying out the book, page by page. We integrated graphics into the text, sometimes in the middle of sentences, eliminating the usual segregation of text and image – one of the ideas Visual Display advocated.
My view on self-publishing was to go all out, to make the best and most elegant and wonderful book possible, without compromise. Otherwise, why do it? The next 4 books were financed by the previous books. I have never written a grant application.
A history of content and sources
Not all that many readers go to the back matter and look up the source for a single sentence. But the back matter can also be read as ordinary text, revealing a history of content and sources. And images and illustrations from the book in the back matter create a lovely visual/verbal summary quilt of the entire book, enjoyed by all.