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Im going to guess the larger subs have more surface area, so it would disipate the pressure better, I do remember that being said when Rolex was designing the DeepSea Challange....
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Please help explain the back of Pam 243
- Thread starter limos88
- Start date
Im going to guess the larger subs have more surface area, so it would disipate the pressure better, I do remember that being said when Rolex was designing the DeepSea Challange....
I believe it should be the other way around... think of aquariums.
The larger is the aquarium, the stronger and thicker needs to be the glass.
By the way, the pressure under water doesn't change depending on the area surface (more details here: https://www.physicsforums.com/threads/pressure-under-water.307277/#post-2160565).
- 24/12/11
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Well thats why they made the DSC at 52 MM ???
Just what i read, not sure , will look into it , but TY
Pressure is force over area, so it's fixed irregardless of the surface area. The total force that is exerted actually increases as the area that the force is exerted becomes larger, given the pressure remains constant. For the Deep Sea Challenge dive watch, it also does not have a display caseback, it has a solid caseback made of grade 5 titanium. The crystal on the top is made thicker to withstand the extreme pressure.
This might help: http://www.hydrosight.com/underwater-windows/standard-sizes/
The bigger the window, the heavier it needs to be (thicker glass) and less pressure it support (lower water height).
The 52mm are there because it is quite difficult to read underwater, with poor lighting. Also, have you seen how does a 44mm watch looks like when wear on top of a diving suit and full equipment?
- 18/1/11
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Mysterio is right
For a fixed pressure, the force exerted depends on the surafce
The bigger the surface the bigger the force exerted and more problems to be supported
The problems are much greater with lager diameters
Besides, the force doesn't increase in a lineal way, because the surface increases exponentially with the diameter. Double diameter means four times the force exerted with the same pressure.
No doubts about this matter
ALE
For a fixed pressure, the force exerted depends on the surafce
The bigger the surface the bigger the force exerted and more problems to be supported
The problems are much greater with lager diameters
Besides, the force doesn't increase in a lineal way, because the surface increases exponentially with the diameter. Double diameter means four times the force exerted with the same pressure.
No doubts about this matter
ALE