Un fenomen curios: din cand in cand, dimineata, gasesc lipita de
balustrada metalica o spirala de gheata. Nu am nici cea mai mica idee
legata de felul in care se poate produce asa ceva. Uite:
http://my.ilstu.edu/~jrcarter/ice/diurnal/extrude/ After extruding many rods and ribbons of ice from steel pipes I think I know how the ice was extruded from the steel fence in British Columbia. While I produced my ice in one night, the processes leading to the extrusion of ice from the steel fence took place over a couple of days. It is a product of the diurnal freeze/thaw process, consistent with this series of pages.
Somehow water gets into the pipes of that steel fence. On the first night the water in the fence freezes, but it does not freeze solid. Then the next day some of the ice melts. The ice that remains in the fence floats to the top of the water. Then that night the temperature falls and ice forms again. This time the expanding water forces some of that ice that did not melt the day before to be pushed out of any holes where the two pipes are welded together.
http://my.ilstu.edu/~jrcarter/ice/diurnal/extrude/spirals/
RăspundețiȘtergereMultumesc mult, o sa-i trimit si eu pozele mele tipului :)
RăspundețiȘtergereTotusi, nu ofera nicio explicatie...
http://my.ilstu.edu/~jrcarter/ice/diurnal/extrude/ After extruding many rods and ribbons of ice from steel pipes I think I know how the ice was extruded from the steel fence in British Columbia. While I produced my ice in one night, the processes leading to the extrusion of ice from the steel fence took place over a couple of days. It is a product of the diurnal freeze/thaw process, consistent with this series of pages.
RăspundețiȘtergereSomehow water gets into the pipes of that steel fence. On the first night the water in the fence freezes, but it does not freeze solid. Then the next day some of the ice melts. The ice that remains in the fence floats to the top of the water. Then that night the temperature falls and ice forms again. This time the expanding water forces some of that ice that did not melt the day before to be pushed out of any holes where the two pipes are welded together.