Surface Tension Explained [Cohesion in Water]

Understanding Water - Chapter 02:

What is surface tension? How are some insects able to walk on water? Why do droplets take on a spherical shape?

In this second chapter of a mult-part dumentary series we delve into the enchanting world of surface tension - an invisible force that shapes water in ways both delicate and profound. This journey uncovers the intricate dance of water molecules at the surface, revealing their remarkable behavior.

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VIDEO CHAPTERS

0:00 - Introduction
0:08 - Examples of cohesion
0:19 - Merging droplets
0:34 - Stretching droplet
0:46 - Droplet hitting a water surface [slow-motion]
0:50 - Elastic behaviour of a water surface
1:05 - Surface tension in action
1:16 - Water's surface molecules
1:25 - Hydrogen bonds at water's surface
1:33 - Imbalance of forces
1:40 - What causes surface tension?
1:50 - How does the water strider utilise surface tension?
2:15 - The spherical shape of a water droplet
2:42 - Capillary waves
3:03 - Dominant forces in larger waves
3:22 - Surface tension in space
3:30 - Why a sphere?
3:40 - Principle of minimum energy
4:10 - Coming up in the next chapter

TAGS

#water #molecule #hydrogen #oxygen #h2o #discovery #documentary #educational #surfacetension #waterstrider #droplets #droplet #hydrogenbond #science #physics #naturalwonders #planetearth