Re: Frost

On Sat, 28 Mar 2009 15:33:28 -0500, "Denis Mitchel" <DLM@xxxxxxxxx>
wrote:

Does the temperature have to be at or below freezing for frost to form on
plants?

Thanks



For moisture or water to freeze the temperature must be no higher than
32 degrees F, and then additional heat must be removed for the water
to phase-change to a crystal lattice structure (ice). No ice will
form above 32 degrees, but certainly there can be supercooled (or
contaminated) liquid water below 32 degrees, which is added frost
protection for the plant.
.

Relevant Pages

  • >>>> WATER PLANTS <<<<
    ... Effluent Water Management In Cement Plants ... Pictures Of Water Treatment Plants ... Oxygenating Plants For Water Gardens ...
    (rec.puzzles)
  • Re: Ice versus water in cooler?
    ... how fast the temperature of the beer reaches the desired point. ... The new ice can absorb a _fixed_ amount of heat from the surroundings, ... dump the water, and use the ice to cool -only_ the bear. ...
    (rec.outdoors.rv-travel)
  • Re: Nuclear energy and hydrogen production
    ... heat directly, not via electrolosis. ... nuclear plants that would siphon off the steam flow from the turbine ... to a H2 refinery (of water desalination plant). ... higher temperature helium plants (the helium is ...
    (sci.energy)
  • Re: Instant Cooling to 35deg.F
    ... for removing heat is the phase change happening at the surface of the ice. ... Air is an excellent thermal insulator. ... The advantage of water: it is a better conductor of heat than air (although I ...
    (alt.home.repair)
  • Re: Elementary thermodynamics question
    ... the air is warmer than the melting point of water. ... Heat will be transferred to the ice from the gas. ... > the outside to the inside, and so you'll have a temperature gradient ...
    (sci.physics)