Now I'm reading a book about scuba diving and this book has the following paragraph:
"Let's say a freediver has 4 l of air in the lungs. At 10 meters the pressure doubles and the volume of air in the lungs squeezed by water is 2 l. At 30 m it is 1 l."
Also, I googled it and found a lot of pictures like that
https://i.pinimg.com/originals/9f/90/3a/9f903a464526b710814c12dd0f725b92.jpg
that show that the volume of lungs is 5 times less at 40 m.
And, I don't understand why it is true. This law is true for BCD or balloons. But my lungs are not a balloon, they are inside my body, and water presses my rib cage. I can agree that the volume can decrease twice or something like that but not 5 times. (Let's say the volume of my lungs becomes 1 l, but the volume inside my rib cage is almost the same, so something should fill the difference (gas or liquid), what is it?)
Could someone explain why I'm wrong?
"Let's say a freediver has 4 l of air in the lungs. At 10 meters the pressure doubles and the volume of air in the lungs squeezed by water is 2 l. At 30 m it is 1 l."
Also, I googled it and found a lot of pictures like that
https://i.pinimg.com/originals/9f/90/3a/9f903a464526b710814c12dd0f725b92.jpg
that show that the volume of lungs is 5 times less at 40 m.
And, I don't understand why it is true. This law is true for BCD or balloons. But my lungs are not a balloon, they are inside my body, and water presses my rib cage. I can agree that the volume can decrease twice or something like that but not 5 times. (Let's say the volume of my lungs becomes 1 l, but the volume inside my rib cage is almost the same, so something should fill the difference (gas or liquid), what is it?)
Could someone explain why I'm wrong?