Grade 8General Physics
why water droplets wet the glass surface and does not wet lotus leaf?
why water droplets wet the glass surface and does not wet lotus leaf?
4 Answers
Saurabh Kumar
The outside of a glass of water gets wet because the air directly around the glass cools down, causing some of the water vapour in the air to condense into liquid.The leaf is covered in a rough surface of waxy projections, which causes water to form beads and slide off.
mgayathri
Thank you sir for your answer but I need answer based on angle of contact.please can you give me answer based on angle of contact
Varsha Sriramoju
Angle of contact is acute in the surface of the glass and on the lotus leaf angle of contact is obtuse.
Shamanvith
Glass surface is having less angle of contact whereas lotus leaf has more angle of contact. Hence glass surface is water wetting agent whereas lotus leaf is water proofing agent
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