I've been cracking my knuckles, back, neck, knees, etc. for years now and my doctor tells me it's tiny air pockets. He said as long as it doesn't hurt, it's perfectly ok to continue cracking joints.
popping air bubbles trapped in your joints. Forcing so joint to crack however can cause problems later in life
Air bubbles, same as in cracking knuckles...
pottery pieces crack during drying because the clay shrinks too fast and unevenly. If drying is controlled by wrapping pieces in plastic and allowing them to dry slowly, they won't crack usually.
Yes, air will enter rock cracks. But, if water fills the crack, during a deep freeze, the expansion of the water, as ice forms, will often widen the crack (even to split the rock).
Yes, air will enter rock cracks. But, if water fills the crack, during a deep freeze, the expansion of the water, as ice forms, will often widen the crack (even to split the rock).
Cracking your knuckles releases the nitrogen from in between your joints.
What's really happening when you "crack" your knuckles:The noise you hear is actually the creating of small bubbles of nitrogen. This is an absolutely harmless thing to do despite all the "old wife's tales" to the contrary.
An egg cracks when boiling because the heat causes the air and moisture inside the egg to expand, creating pressure that can crack the shell.
Air dry clay cracks because as it dries, the moisture evaporates from the clay, causing it to shrink. This shrinkage creates stress within the clay, leading to cracks forming on the surface.
Skin cracks when it is cold because the air is extreemly dry and sucks the moisture out of your skin.
Air dry clay cracks while drying because as the water in the clay evaporates, it causes the clay to shrink. This shrinkage creates stress within the clay, leading to cracks forming on the surface.
To remove the air bubbles, open the stopcock and the air bubbles will remove