Why is ice slippery

While walking down the polished floor with socks on at home, likely, is much more than carpet. Because the carpet between our feet, compared to the polished parquet, there is more friction and more contact. Our feet from slipping on an icy surface can be based on a similar reason, but those who do ice skating on the rough ice surface, a flat ice surface sliding at a speed of more than.

Ice, as thought, because it is a smooth surface is not slippery. Event, skating to a very small surface pressure due to ice melting and then the ice formed on the thin layer of water is moving skates.

The average length of human feet 25 inches, most of that, let's say only 10 centimeters. The average human weight of 75 kg. Or two feet hit ground at 500 inches, each 0.15 kg per sq. Cm. riding weight. Women wearing high heels so the location printed area becomes smaller and the pressure is increased so that women in high heels hot asphalt trail will remain, even where this pressure is the same as that of the elephant.

Almost like a knife tip of the ice skating is so small that it touch the area, to reduce the melting temperature of 130 kg/cm2 l as required to melt the ice surface immediately.

When the rough ice, ice skating only the projection of the tooth to the press, so the contact area and pressure increases considerably smaller and easier to melt the ice, the ice between the skates on the thin layer of water floating freely.

Another surprising feature in the meantime, the ice can not go without mention. The ice on our hands about the pain in our teeth, these teeth can help reduce pain.

Any part of our body is a pain, stimulating nerves send pain signals to the brain, here are moderate.

In this way, the brain is stimulated by the body's natural painkillers as 'endorphins' and 'enkefolin' is released.

In order to go to the resources of this release to other parts of the nervous system, pain perception through the doors of the other 'close' signal is sent. Because of the pain signal through the hands of the facial nerve is secreted as a result of natural painkillers in the brain from the pain, the door is closed.

Dental pain in another part of the body, not put ice on hand, this is the reason, this point is reached similar results by applying akapuntur. Between the index finger to point the finger at head of this point is called HO-KU