What's the difference??

[skibones]

How do you tell the difference between hoarfrost and rime ice?

 

[Chip]

Is there a punch-line to that question ?

"Rime ice is similar in appearance to hoar frost; but whereas rime ice is formed by vapour first condensing to liquid droplets (of fog, mist or cloud) and then attaching to a surface, hoar frost is formed by direct deposition from water vapour to solid ice.

Sometimes the rime ice takes on a feathery look, and looks very much like "snow feathers"."

 

[sapblatt]

Is there a punch-line to that question ?

Hoar frost costs money?

 

[Tom Rankin]

Usually, hoar frost is down low, and forms when there is very little wind, most likely similar to dew. Rime ice can cover an entire building, and needs the wind to drive the water onto the surface, where it freezes.

If I get a chance, I will post examples of both tonight...

 

[Bob]

hoar frost doesn't moan.