Originally posted by Zkribbler
To understand how martial artists break the pile of bricks, you have to understand the difference between tensil strength and compression strength.
Bricks have real good compression strength, which means you can stack them on top of each other to make buildings and such. However, their tensil (holding together) strength is much less. That's why those bricks to be broken are always placed between two uprights. The martial artist is trying to break them apart, not to smash them.
There's also a lot of training of the hand, so that it can withstand its impact with the pile of bricks.
And its also technique -- hitting the brick with the smallest amount of area contact to focus the blow; and hitting it with high speed, maximizing the momentum of the blow (m x v).
To understand how martial artists break the pile of bricks, you have to understand the difference between tensil strength and compression strength.
Bricks have real good compression strength, which means you can stack them on top of each other to make buildings and such. However, their tensil (holding together) strength is much less. That's why those bricks to be broken are always placed between two uprights. The martial artist is trying to break them apart, not to smash them.
There's also a lot of training of the hand, so that it can withstand its impact with the pile of bricks.
And its also technique -- hitting the brick with the smallest amount of area contact to focus the blow; and hitting it with high speed, maximizing the momentum of the blow (m x v).
Breaking the floating ribs is equivalent to breaking 4 one inch thick boards and the main rib cage 5 one inch thick boards. What keeps the ribs together is muscle and sinew.
Gramps
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