Gadgetory

this is minute science thanks for checking us out friction when I move my hand across my other hand I am feeling friction why because these two surfaces my palms are not completely smooth when one moves over the other feels a drag it feels a resistance a tendency to want to move against the direction that I'm sliding my hand across the other friction is one of the reasons why your core engine only performs at 25% of its full potential a lot of that energy that is stored inside the gas molecules that are eventually burned to move the cylinder down and thus turn your car wheels ends up being lost in the form of heat friction is also what can start a fire if you take two sticks and rub them together vigorously for long enough periods of time you can get charred wood and it forms because the motion between the two objects in question is so great so much heat is produced as a charcoal actually ignites it can become flammable people have been creating fire this way for thousands of years they have been able to harness and manipulate friction to the point of where they can produce viable flame now there are generally two types of friction the first is static friction and that occurs when an object is resting of another but does not slide down as you would expect it to because friction is too great a kinetic friction occurs when static friction coefficient is overcome and the object in question is able to slide down the surface there's still friction involved but it's not enough friction to prevent the object itself from moving and so static friction kinetic friction theoretically at any angle other than zero degrees this pen would slide but because friction is present in everything this does not move downslope until it hits certain points this book is a simple analogy it's nothing too complex but at least now you get the idea of the differences between the different types of friction that you see in everyday life hint hint the next minute science episode Earth's structure soon to come thanks for checking us out you