Tuesday, September 7, 2010

InHabit - intial thoughts

http://www.cloudscap.es/
http://blog.cloudscap.es/


Inhabit the space above....clouds...somewhere to sit and linger....make people look up.
Being in fog makes you:


  1. feel like an individual (as opposed to a mass of people)
  2. feel anonymous
  3. hear things differently
  4. see things differently
  5. move more cautiously, slowly

Clouds/mist/fog information:

  • Fog can be simply defined as a cloud touching the ground.
  • Fog is denser so contains more water droplets than mist.
  • Fog has a visibility of less than 1000m. This limit is for aviation purposes, but for the general public an upper limit of 200m is more realistic. Severe disruption to transport occurs when the visibility falls below 50m.

The atmosphere includes water vapour; a certain amount of water can be held as invisible water vapour at any given temperature. If air is cooled it holds less water and becomes super saturated. At saturation point, some of the water has to condense to form water droplets, which forms cloud.

Types of fog:

  • Radiation fog = fog formed on clear, still nights when the ground loses heat by radiation, and cools. The ground in turn cools the nearby air to saturation point, thus forming fog.
  • Advection fog = fog formed when very mild moist air moves over a cold ground especially in Spring when mild winds move across the country over icy ground. The lower layers of the air get cooled down rapidly to below the temperature at which fog forms.
  • Hill/upslope fog = fog formed as mild moist air is forced to ascend a hill or mountain range. As the air moves up the windward side of the mountain it cools down, and again if the air becomes saturated then cloud is formed which, if below the top of the hills, gives fog.
  • Coastal fog = fog which forms when moist air is cooled to saturation point by travelling over a cooler sea.
  • Steam fog = fog seen rising from the ground after a rain shower. If the ground is warm, the water from the shower may evaporate. If the air above it is saturated and cannot hold any more water, the excess moisture condenses and looks like steam.

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see: wikipedia entry on fog machines
Fog machines have been used as a security device for disorientating intruders...

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