Lux case study

Jan 7th, By Joshua Lim Category: William of Ockham Luther and the theologia crucis In contrast to such a theology, Luther proposed a different way, namely, the way of the Cross. In his Heidelberg Disputation he set about differentiating two theologies which, in many ways, provided the fundamental basis of his own understanding of God:

Lux case study

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Light therapy involves exposure to intense levels of light under controlled conditions. The recommended light therapy system consists of a set of fluorescent bulbs installed in a box with a diffusing screen, and set up on a table or desk top at which one can sit comfortably for the treatment session.

Treatment consists simply of sitting close to the light box, with lights on and eyes open. Looking at the lights is not recommended; rather, people are free to engage in such activities as reading and writing, or eating meals.

What is important is to orient the head and body toward the lights, concentrating on activities on the surfaces illuminated by the lights, and not on the lights themselves. Treatment sessions can last from 15 minutes Lux case study three hours, once or twice a day, depending on individual needs and equipment used.

The average length of a session for a system delivering 10, lux illumination is, for example, much shorter than for 2, lux 30 minutes vs. In another experiment, we found that 30 minutes was an unnecessarily long exposure for some patients who responded fully at 15 minuteswhile several required 1-hour exposures to show the effect.

Early research studies used "full-spectrum" bulbs producing bright light similar in color composition to outdoor daylight, in contrast to the color of ordinary fluorescent or incandescent light. The technology is evolving rapidly, however, and manufacturers now offer effective systems using cool-white, triphosphor and bi-axial lamps.

What appears to be critical is that the level of light produced match that of light outdoors shortly after sunrise or before sunset. Light intensity is a critical "dosing" dimension of the therapy: The time of day of light therapy is another important factor.

Lux case study

Many people with winter depression respond best of all to treatment first thing upon awakening. Some, however, do better with evening light.

It is necessary to determine the optimum time of day for each individual. Is increased exposure to normal room light therapeutic, without the use of special apparatus?


Some very light-sensitive people, living and working in dim environments, may feel improvement with increased exposure to normal room light. Research studies show, however, that most sufferers of SAD and winter doldrums require exposure to light levels much higher than ordinary indoor lamps and ceiling fixtures provide.

Such therapeutic levels are five to twenty times higher as measured in lux or foot-candles by a light meter than typical indoor illumination in the home or office. If outdoor light intensities are what's critical, can the therapeutic effect be achieved by spending more time outdoors in winter?

Again, some individuals report improvement by spending more time in the sun.


For most, however, the strongest therapeutic effect requires exposure to artificial bright light in early morning - at an hour 6: Do the lights really work? Researchers at more than 15 medical centers and clinics in both the U.GreenLIGHT vs Blue Light.

A major study confirming the lack of superiority of blue light wavelengths in light therapy was published by Science. The reason this study is so significant is because several authors of this study were responsible for the studies that led to the widespread misconception that blue light wavelengths are more effective than white light for light therapy.

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Lux case study

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Post Tenebras Lux?: Nominalism and Luther’s Reformation

2 Characteristics of teachers One course director and 2 clinical faculty Background in community health promotion Fourth time teaching this course for course director.

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Highlights In 70% of the population, biological and social clocks differ by >1 hr (social jetlag) Social jetlag is a predictor of BMI, especially for overweight individuals The decrease of sleep duration over the past decade concerns only workdays Individuals are progressively exposed to decreasing light, and their chronotypes delay.

Comfortable Lo- Light Therapy Lamps for SAD, Depression, Sleep disorders (Safe on Eyes)