Light intensity and judged duration

Violation of Bloch's Law that specifies reciprocity of intensity and duration with brief light flashes

For more than a century researchers have been reporting that the visual impact of a very brief flash is determined by the quantity of photons that the flash delivers. This has been variously described as the Bunsen-Roscoe Law or Bloch's Law, often specified as reciprocity of intensity × duration. Prior research found no evidence for such reciprocity when microsecond-duration flashes from a ligh...

Being and Time: Judged Presence and Duration as a Function of Media Form

We briefly describe a novel immersive environment—the interactive tent—and an artistic production within it, the Illusion of Being. In this production, immersants experience a vivid cycle of the elements in a way that depends on their bodily movements. This elemental “story” has four versions in all, with each created to have differential effects on sense of presence and of subjective duration,...

Duration and Intensity of Cumulative Advantage Competitions

The role of skill (fitness) and luck (randomness) as driving forces on the dynamics of resource accumulation in a myriad of systems have long puzzled scientists. Fueled by undisputed inequalities that emerge from actual competitions, there is a pressing need for better understanding the effects of skill and luck in resource accumulation. When such competitions are driven by externalities such a...

Sleep duration and intensity of ADHD symptoms.

Attention deficit/hyperactivity disorder (ADHD) is one of the most common childhood psychiatric disorders. Its symptoms involve patterns of inattention, hyperactivity, and impulsivity, which are associated with global, social, academic, and adaptive impairment; need for treatment increases with each additional symptom. Children with ADHD commonly experience sleep problems, which add to difficul...

Relation between Storm Duration and Precipitation Intensity