3 ms·
To answer that question, have you ever tried to swim with a 1kg weight belt? Such devices are commonly used by scuba divers to maintain neutral buoyancy. Or pu
by mnw21cam 9y ago
To answer that question, have you ever tried to swim with a 1kg weight belt? Such devices are commonly used by scuba divers to maintain neutral buoyancy.
Or put it another way, the difference in density between seawater and fresh water is about 3%, and it's noticeably easier to swim in the sea. So if you have bone replacements that make you 3% heavier, you should expect to notice it.
- KozmoNau7 9y ago> the difference in density between seawater and fresh water is about 3%, and it's noticeably easier to swim in the sea This really messed with my head when I swam in Lake Constance last year. I was so used to swimming in salt water than the different buoyancy in fresh water completely threw me off for a couple of minutes.
- gaius 9y agoI add 2kg when diving in saltwater, but it will be different for everyone
- mannykannot 9y agoAt least part of the ballast normally carried by divers is to compensate for the buoyancy of either a wet- or dry-suit, and for the buoyancy of SCUBA tanks (some are buoyant when empty, at least in seawater [1].) Treading water while carrying an extra kilogram would be quite a struggle for many people. On the other hand, the article compares bone to metals on an equal-weight basis. [1] http://www.huronscuba.com/equipment/scubaCylinderSpecification.html http://www.huronscuba.com/equipment/scubaCylinderSpecificati...