Igreja da Luz. Image by hetgallery, via Visualhunt.com
The use of light in religious constructions as an element of association with the divine has been present throughout the history of humanity. Historically, a series of temples from various religions have used this technique as an attempt to visually and perceptibly approach humans to a sacred and intangible dimension. Light is often given a spiritual connotation and significant symbolic force, capable of modifying people's relationships, perceptions, and experiences with their surroundings. Thus, it is an element that has been, and still is, used by architecture to create scenarios and effects in many religious spaces, especially churches.
From Thomas Edison's empty glass bulb to AI-controlled LEDs, hundreds of years of constant evolution have passed, which culminated in what we now know as artificial lighting. Edison could not have imagined how dependent we would become on his invention almost two centuries later. It led to a way of life where we spend up to 90% of our time in enclosed spaces deprived of natural light, such as shopping centers and offices. Places where artificial light remains constant throughout the day, without any variation of color temperature or luminous intensity are where artificial lighting practically eliminates day and night differences.
Light is part of various disciplines, shaping the world as we know it. In physics, it serves as a measure of speed and makes vision, and the recording of images by the eye and camera lens possible. Throughout art history, the representation of light - or its absence - has guided secular movements in various manifestations with equally different techniques and supports. This means that light - and its derivative shadow - can create environments, atmospheres and sensations, which can be perceived in objects and spaces. Light is also a part of architecture.
Jenny Holzer, installation at Guggenheim New York. Image: fluido & franz, CC BY-NC-SA 2.0 via Flickr
Light has been present in art for centuries. To think of the Baroque or Gothic without this element would be impossible. However, in the 20th century, artists began to explore light qualities and transformed them into a means of materializing art. Sculptures, immersive installations, and ways of shaping the environment through light, its colors and intensities brought new spatial perceptions by establishing a unique relationship with architecture.
Luis Barragán’s legacy lies in the way he uses light and color. Tadao Ando's sensitive approach to natural light established his own architectural language. James Turrell's dramatic interior transformations explore a unique perception of visual experiences where "light is not a tool to enable vision but rather something to look at itself". Olafur Eliasson's immersive installations play with the psychology of viewers using just light, water, and air. These architects and designers, among others, have reimagined how light is perceived, inspiring generations of architects to follow suit with the way they understand and employ light.
The simple activity of taking a walk in the evening can easily turn from a relaxing leisurely activity to a dangerous endeavor by removing just one element from the streetscape: public lighting. While not often recognized as defining aspect of urban environments, artificial illumination has played an essential role in defining the character of modern cities. Crime control, the appeal of nightlife, the rise of the shop window, revolutionary movements, utopias, and ideals of social equity are all concepts whose development is tightly linked to the history of public lighting. Technological advancements over the past centuries have continuously shaped the appearance and symbolism of streetlamps. Still, the this element has remains a constant throughout its history.
Whenever light falls on a surface there will be a shadow, no matter how insignificant its focus is. The outline will hardly be visible, but other shapes will come to the fore in this play of light and dark. In the case of being projected by solar dance, a latent dynamic is added to the shadows that can be used to intensify everyday phenomena, breaking the monotony of space. Orthogonal openings in a long corridor or woven pieces in a courtyard are examples of constructive elements that create patches of light and shadow, bringing in addition to aesthetic delight and thermal comfort to its users. In this way, it becomes evident that these intangible elements are essential parts of an environment that, long before Louis Kahn declared the power of shadows, was already being manipulated.
The motto of the Solar Decathlon Europe 21/22 was to convert and expand rather than to demolish and reconstruct. Recycling windows, using biodegradable materials for luminaires and connecting light with sensors represented just some innovative examples of the international university-level student competition in Wuppertal, Germany. For the first time, the competition presented an award for sustainable architectural lighting. This was a question of quality as much as quantity, and that applies equally to daylight and artificial light.
Linear Suspended Lighting. Image Courtesy of Alcon Lighting
Lighting plays a crucial role in architecture: to allow users to see, safely inhabit spaces, and carry out their daily activities. But its power has long exceeded these basic functions, primarily driven by technological advances and new design trends that have led to greater innovation and creativity. Contemporary lighting design has the ability to completely transform a room, impacting visual comfort and setting the tone by defining volumes, drawing attention to texture and enhancing colors. It can also determine shape and size perception; for example, in a room that is particularly small, having extra lighting reflect off light-colored walls will help the space appear larger. Similarly, light has been proven to affect mood, concentration and overall well-being. Whereas an adequately illuminated environment is associated to warmth and improved energy levels, poor lighting can lead to health deficiencies, including headaches, eyestrain and even depression.
On August 27th, 1883, the volcano of Krakatoa in the Indonesian islands erupted. Ashes and rocks flew miles high. Barometers wobbled three and a half times as they recorded the atmospheric pressure wave circumnavigating the globe. The noise was heard across the Indian Ocean and Australia. And for years, small ash particles floated in the atmosphere, diffusing the sun’s light and scattering colors around the world.
The Benedictine monastery chapel of Santa María de las Condes, visible from different points in the eastern part of Santiago, Chile, is a white volume, located halfway up the slopes of Los Piques hill.
Calla Pendant Ceiling Lights. Image Courtesy of Cocoweb
Characterized by a simple structure and a gable roof, the traditional barnyard typology responds to its original function: sheltering farm products and livestock. In recent years, however, the barn aesthetic has evolved tremendously, sparking the interest of designers with its enduring rustic charm, minimalistic shape, refined ornamentation and modularity – qualities that have long made it popular in countryside hideaways. Reinterpreted to fit a contemporary style, the vintage typology has conquered modern projects that seek to offer an escape from the fast-paced, dense reality of urban life. Whether refurbishing historic farms or building new homes designed to resemble barns, architects have drawn inspiration from the industrial origins of traditional barnyards, but adding a modern twist.
A recent study suggests that our home galaxy, the Milky Way, cannot be seen by one-third of humanity. Why? Millions of city lamps brighten our cities every night, but only part of their light is used to actually illuminate streets or sidewalks – the rest is lost and emitted above the horizon, brightening the night sky and contributing to what is known as light pollution. However, as the artificial glow from towns and cities increases every year, the consequences of this urban phenomenon go beyond just preventing us from seeing stars. Other harmful effects include: causing a hazardous glare that can reduce safety, excessive energy consumption, waste of money and resources, disruption of ecosystems’ natural day and night cycles, suppression of melatonin production and several negative repercussions on public health. In this sense, choosing the right lamps (with a well thought-out design) is crucial to reduce light pollution.
For most people, modern living requires spending most of the day in interior spaces - in fact, according to a report by the Environmental Protection Agency, the average person spends around 90% of their life indoors. As a result, this implies missing out on health benefits associated with sunlight exposure, such as vitamin D absorption, regulation of circadian rhythms, higher energy levels and even improved mood. Thus, one option is to increase the amount of time we spend outdoors. But because most daily functions are carried out inside buildings, it is crucial to incorporate and prioritize natural lighting in interiors.
Light serves an essential purpose in architecture: to help us see. Whether it be through natural or artificial methods, rooms must be illuminated accordingly so occupants can safely inhabit them and fulfill their daily functions. When the right system is selected, light can also contribute to energy efficiency and sustainability within the building as a whole. However, apart from its evident functional and environmental value, lighting design can vastly impact the visual comfort and aesthetic tone of interiors by drawing attention to textures, enhancing colors and defining volumes. Therefore, of the many pieces involved in interior design, lighting is certainly one that can enhance or destroy a space and even affect users’ well-being, which is why it should be considered a crucial design element by itself.
Just as the colors of an abstract painting or photograph can produce a certain mood, so can the colors of a building or room profoundly influence how the people using it feel. Physiologically, study after study has shown that blue light slows the production of melatonin, keeping people more alert or awake even at night. Psychologically, people associate certain colors with certain feelings due to cultural symbols and lived experiences – for example, they might perceive the color red as menacing or frightening because of its connection to blood.
Altogether, the way a room is colored can have complex effects on how its users feel, while a façade can be perceived in dramatically different ways depending on how it is colored. Below, we summarize the emotional associations of every color, assessing their differing effects as each is used in architectural space.
https://www.archdaily.com/930266/how-color-affects-architectureLilly Cao
Although an architectural project comes to life with palpable materials, it is also defined by intangible qualities that give it richness, dynamism, and liveliness. Among them, the interplay of light and shadow can transform environments and affect their perception, determining the user's spatial experience. Besides providing natural ventilation, privacy, and thermal comfort, lattices allow this duality by filtering the entry of sunlight while projecting repetitive figures on the surface. In this way, perforated walls and ceilings can create multiple geometric patterns of light and shadow that become design elements capable of generating unique atmospheres.
Using and controlling light can change the perception of a place; users perceive and feel the space differently depending on factors such as the type of light switch, color variations, and combinations. When used in temporary installations, light can break the boundaries between art and architecture, and also between tangible and intangible, transforming the elements of the project and creating new shapes and patterns.
