Too far and you may severely damage bones and organs, not enough and the compressions may not be effective.
(The breaking of some ribs during CPR is somewhat expected, but you don't want to crush organs or anything like that.)
You have to make sure that u hit their heart hard enough to push the blood through their body. Easier to keep them alive.
Compress 30:2 breath with 5 cm depth
Compress the infant's chest about 1/2 to 1 inch for CPR chest compressions.
Depth of water
Compression depth does not affect the recoil ability of the chest; compress 1/2 to 1 inch for infant, 1 to 1 1/2 inches child and 2 inches for an adult.
The depth of chest compressions in child CPR is 1 to 1 1/2 inches. A child is about 1 to 8 years old.
Compress a child's chest 1 - 1 1/2 inches per compression.
Compress a child's chest 1 - 1 1/2 inches per compression.
Chest compressions on adults should be 1 1/2 to 2 inches deep.
No. Density and Depth Liquid pressure = weight density x depth As long as the liquid is incompressible (which is a good approximation), Yes. During WWII it was necessary to compress various high explosives to use as detonators. A system was devised to lower rubber bags of high explosive into deep ocean trenches. The explosive was as hard as glass and could be cut into suitable pieces easily. Bell Ross makes a "Hydromax" wrist watch with a pressure depth rating of 11,110 Meters, which is the deepest depth in the ocean.
Usually when you cannot get close enough to create a large enough image with a shorter lens, or wish to compress the depth of field.
Depth of water
Depth of water