An Indian burn that was given as children is an example of increased friction upon the epidermis. Your epidermis is merely another more scientific name for your skin. Friction upon your epidermis can result in a friction induced burn if given the appropriate amount of time or pressure. I can provide a very in depth and scientific answer if you need more specifics. However, in short I believe you are looking for a general area of skin being exposed to high friction yes? Under normal circumstances this produces a slight surface injury to your skin very similar to a sunburn and crossed with a bruise. You will be able to break the capillaries within the skin if you provide enough pressure, or if you were to specifically increase repeating velocity it would produce more of a burn like effect which would grow increasingly worse as time elapses or a moderate amount of pressure is added while increasing speed so as to produce less bruising and more of a burn effect the speed of object being applied to skin must be increased as well.
Now the body does have some areas in which certain amounts of friction will feel much better than others... generally speaking low levels of friction applied anywhere on the epidermis will feel fairly good... place too much and that's when it gets bad... but certain areas such as the genital area feel much better when stimulated by friction. but too much even there will cause pain and irrattation and given enough it too will result in a burn.
when you are old your epidermis gets wrinkled
well one is that the amount of collogen in your skin decreases which is why people have wrinkles
blister
No, coefficient of friction is dependent on the materials in contact, not their mass. However the FORCE of friction will increase as the mass increases in this case.
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Your epidermis is your skin, so yes, it is very easy to touch your epidermis, even with another part of your epidermis.
decreases
The friction will also double as Friction= (friction coefficient)(normal reaction)
With increased surface areas in contact, friction increases.
blister
It increases.
Friction also increases. Slide your hand across a table. Now try it again, while pressing down hard on the table. More friction with more pressure.
There are different ways through which helpful friction be increased. The easiest way is using coarser or rougher surface to increase resistance.
Speed it up!
No, the converse is true.
Dermal ridges cause the overlying epidermis to form epidermal ridges. Collectively these ridges are called friction ridges.
movement and heat
Friction can be increased by reducing the speed of the moving object. Friction can also be increased by increasing the weight of the moving object.
by runnig or go with more speed