The paper clip is more dense than water but can rest on the surface of the water because of the water's surface tension. Evidence of water's surface tension can be seen where the water strider's legs ...

This clip starts with a brief introduction into what polymers are and lists examples ... the relationship between hydrogen bonds and surface tension, the anomalous density of ice and the role ...

Electrospinning operates on a straightforward principle involving a high-voltage electric field applied between a droplet of polymer solution (or melt) held by a syringe and a grounded collector. The ...