How Do Spiders Climb Wall ?

Hi  Guys, today I am going to tell about :-

HOW DO SPIDERS CLIMB WALL ?




I have told you that there is still a chance to become SpiderMan using technology. So now, How does a spider climb the wall ?

If we zoom into the spider's leg we can see small hair like structers called spatulae which is only a few nanometers thick. These tiny hairs increases the area of contact of the spider's leg and the wall.



All smooth surfaces are not really smooth in the microscopic level. When we touch a surface, there are minute gaps between the finger and the surface in the micropic level. Therefore these tiny hairs increases the surface area of contact.



You might think that by increasing the surface area how can spider's climb wall. So to know the answer we should look at molecular forces, the Van Der Waals Force.




I will tell you about the Van Der Waals force as soon as possible.

THANK YOU 

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