Observing Change in Surface Tension with Wire Immersion

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
1 reply · 3K views
jangheej
Messages
16
Reaction score
0
hi =D
i observed something interesting during the experiment.
i immersed a normal temperature wire in a chalet filled with water and particles (lycopodium, glitter) floating on the surface.
the original problem is to immerse a "hot" wire (2011 IYPT problem) but i was curious
what would happen if a normal wire was plunged.

Interestingly, the particles dispersed radially to an extent that doesn't seem to occur
simply due to the plunging motion.
So I am wondering if surface tension or any attraction force between particles and water molecules would change due to the immersion of wire.
What physical change is related to this? Any idea? =)
 
Physics news on Phys.org
The interfacial energy of water is incredibly sensitive to contamination. Crud on the wire could be sufficient to account for your observations.