Whiteout (weather) Whiteout (weather) Whiteout is a weather condition in which visibility and contrast are severely reduced by snow or sand. The horizon disappears from view while the sky and landscape appear featureless, leaving no points of visual reference by which to navigate. Whiteout has been defined as: "A condition of diffuse light when no shadows are cast, due to a continuous white cloud layer appearing to merge with the white snow surface. No surface irregularities of the snow are visible, but a dark object may be clearly seen. There is no visible horizon." A whiteout may be due simply to extremely
Fear of flying The condition can be treated with exposure therapy, including use of virtual reality equipment, which works better when combined with cognitive behavioral therapy. Relaxation techniques and education about aviation safety can also be helpful in combination with other approaches. Studies of interventions like CBT have reported rates of reduction in anxiety of around 80%, however there is little evidence that any treatment can completely eliminate fear of flying. Estimates for prevalence have ranged between 2.5% and 40%; estimates on the lower end are probably generated through studies where the condition is diagnosed by a professional, and the higher end probably