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 ...

The temperature of the water was about 34° F. The surface tension of water at this temperature is 76.53 dynes per cm., and viscosity 0.0179 c.g.s. units.

Scientists in Turkey have sought to use electrospray cooling to reduce the operating temperature of photovoltaic for the ...