General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 28)
28.
Materials for rain-proof coats and tents owe their water-proof properties to
Discussion:
18 comments Page 2 of 2.
Anupma Agarwal said:
1 decade ago
Material has more surface tension means more cohesion than adhesion. Therefor surface tension of raincoat material are higher than their inner material.
(2)
Seema said:
1 decade ago
Means the plant has high surface tension that's why water does not stick to its leaf. Is this correct?
Anushka said:
9 years ago
What is the example of this plant?
Mayur said:
9 years ago
How it works?
Kuldeep kumar said:
9 years ago
How does angle of contact helpful in making the coating material of raincoat?
Saurav sinha said:
8 years ago
Cohesive force becomes greater.
Amol k said:
6 years ago
Angle between rain coat and water droplet is 0 degree it is the Nature of angle of contact.
Addo bless said:
6 years ago
Yes, it's surface tension because the raincoat is treated with oil-based substances which repels the water molecules, so when a thin water film form across the fabric due to surface tension effect. As a result, no water seeps through the fabric but on touching the outside of the fabric the molecules are broken thereby water now soak through the space between the thread.
(4)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers