Foehn wind Eiger, for whom the winds add further difficulty in ascending an already difficult peak. They are also associated with the rapid spread of wildfires, making some regions which experience these winds particularly fire-prone. Anecdotally, residents in areas of frequent foehn winds report a variety of illnesses ranging from migraines to psychosis. The first clinical review of these effects was published by the Austrian physician Anton Czermak in the 19th century. A study by the Ludwig-Maximilians-Universität München found that suicide and accidents increased by 10 percent during foehn winds in Central Europe. The causation of "Föhnkrankheit" (English: Foehn-sickness) is yet unproven.
Neumann boundary condition the boundary must be sufficiently smooth such that the normal derivative can exist, since, for example, at corner points on the boundary the normal vector is not well defined. The following applications involve the use of Neumann boundary conditions: Neumann boundary condition In mathematics, the Neumann (or second-type) boundary condition is a type of boundary condition, named after Carl Neumann. When imposed on an ordinary or a partial differential equation, the condition specifies the values in which the derivative of a solution is applied within the boundary of the domain. It is possible to describe the problem using other boundary