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surface tension

surface tension

5 4.3
A force that makes a liquid surface pull together like a skin
  • noun
  • /ˈsɜrfɪs ˈtɛnʃən/
  • Specialized
translation icon : tensión superficial
  • The scientist demonstrated how surface tension allows water droplets to bead up on a waxed car hood.
  • high surface tension
  • surface tension of water
  • low surface tension

So whether it's crops or livestock, they're consuming healthier water where we lower the surface tension and all these cool things.

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Examples

  • OK, so now the laws of surface tension help us create soap bubbles.

  • The throbbing interaction appears to be an interplay between surface tension and evaporation.

    Blog text (28)
  • So the surface tension is how much energy I need to create a surface.

  • The most important factor here is surface tension, which is an effect of the polarity of water molecules.

    Blog text (34)
  • But for marine microbes to get airborne, they must escape the surface tension of water -- no easy task.

    Academic text (2009)
  • The resulting liquid sheet has a cusped rim due to an instability caused by surface tension.

    Academic text (2006)
  • Stable hydrogen bonds also lead to the strong cohesive forces underlying the unusually high surface tension of water.

    Academic text (2007)
  • With less surfactant, the surface tension of the droplet tightens again, and the droplet contracts.

    Blog text (28)
  • The water strider can walk on the surface of the pond due to surface tension.

  • Adding soap to water reduces its surface tension, making it easier to wash dishes.

Synonyms

interfacial surface tension
vssurface tension
  • Specialized
7.4

A pull at the surface between two liquids that do not mix, like oil and water

is about one liquid's outer layer contracting from intermolecular forces
interfacial tension
vssurface tension
  • Specialized
8.7

The force at the surface between two liquids that do not mix, like oil and water

is about one liquid's outer layer contracting from intermolecular forces

Surface Forms

Morphology

surface + tension

The meaning ('the tightness or contracting tendency of a liquid's surface') is directly derivable from combining 'surface' (outer/top layer) and 'tension' (tightness/force); it denotes the presence of tension at the surface. Although it is a scientific term, the noun+noun composition follows common, cross-linguistic logic, so a B1 learner who knows both constituents should be able to infer the meaning.

Etymology

Surface tension comes from imagining the top of a liquid acting like a tight skin: surface means the top and tension means a tight pull. This 'skin' 'pulls itself tight', forming drops and letting small insects walk, so the term means the liquid's top layer pulling together.