Tag Archives: dark

Defining Shadows and Darkness

“It is necessary to return to the point where the interplay of light and dark reveals forms, and in this way to bring richness back into architectural space. Yet, the richness and depth of darkness has disappeared from our consciousness, and the subtle nuances that light and darkness engender, their spatial resonance – these are almost forgotten. Today, when all is cast in homogenous light, I am committed to pursuing the interrelationship of light and darkness . Light, whose beauty within darkness is as of jewels that one might cup in one’s hands; light that, hollowing out darkness and piercing our bodies, blows life into ‘place’.”

– Tadao Ando (1990)

AWA Lighting Designers project: Cyber Hub

AWA Lighting Designers project: Cyber Hub

 

Lighting for the Elderly

Lighting for Elderly

UNDERSTANDING THE AGING EYE

The human visual system deteriorates throughout adult life and is considered “young” until it reaches 40 years of age

As the visual system ages:

  • Less light reaches the back of the eyes
  • Pupils decrease in size
  • Lens becomes thicker, so that it absorbs more light

DESIGNING EFFECTIVE LIGHTING SYSTEMS FOR THE ELDERLY

  • AMBIENT LIGHT LEVELS: Should be increased by 50% versus those used for younger people. Ambient levels should be at least 300 lux
  • TASK LIGHTING: Light levels should be at least 1000 lux on task areas to see fine details
  • CONTRAST: The contrast of objects such as stair edges, curbs, ramps, or doorways should be increased by using paint or other techniques
  • COLOR PERCEPTION: Can be improved by using high illuminance levels and high-quality fluorescent lamps versus incandescent lamps

SLEEP QUALITY IN THE ELDERLY

Between 40-70% of people over 65 suffer from chronic sleep disturbances

Sleep disturbances result from a disruption of the body’s circadian rhythms

Scientists at Rensselaer Polytechnic Institute’s lighting research center [LRC] have demonstrated that blue light is the most effective at stimulating the circadian system

This light must be combined with the appropriate light intensity, spatial distribution, timing and duration

LRC researchers tested a goggle like device to improve the sleep quality in older adults

A marked increase in daytime lighting levels can counteract the age-dependent losses in retinal light exposure

Color Mixing and Connotations

ADDITIVE MIXING

  • Mixing colors of light
  • In absence of color the result is black
  • Presence of all three primaries is white

SUBTRACTIVE MIXING

  • Mixing colors pigment / CMYK
  • Absence of color is white
  • Presence of all three primaries is black

Color Mixing

MEANING OF BLACK: DARKNESS
How the color black affects us physically and mentally?

  • Feeling inconspicuous
  • A restful emptiness
  • Mysterious evoking a sense of potential and possibility

Darkness

MEANING OF GRAY: SHADOW
How the color gray affects us physically and mentally?

  • Unsettling
  • Expectant

Stormy Sky

EIGENGRAU (GERMAN: INTRINSIC GRAY)

  • The color seen by the eye in perfect darkness
  • Eigengrau is perceived as lighter than a black object in normal
  • Lighting conditions, because contrast is more important to the
  • Visual system than absolute brightness.

Eigengrau

MEANING OF WHITE : LIGHT
HOW THE COLOR WHITE AFFECTS US MENTALLY AND PHYSICALLY?

  • Aids mental clarity
  • Encourages us to clear clutter or obstacles
  • Evokes purification of thoughts or actions
  • Enables fresh beginnings

Sunrise