+-------[ Poul-Henning Kamp ]----------------------
| In message <[EMAIL PROTECTED]>,
|[EMAIL PROTECTED] writes:
|
| >>> What am I doing wrong? Given a diameter of appr. 7cm, I'd come at appr
| >>> 0.7Mach. Does that mean that within a few years my machine will go
| >>> KABOOM when booting?
| >>
| >> I have a 15K rpm drive if you want to do a recalculation. I think that
| >> is 1.05Mach, depending on whether you rounded or not. ;-)
| >
| >Hang on, there's a bug here somewhere:
| >
| >7cm = .07m,
| >.07m x 3.14... = .22m (per rotation)
| >.22m *15000/60 = 55m/s or ~ 195km/h or 123 mph, not even close to a fast car.
| >
| >We should expect breaking the sound barrier with >75krpm drives
| >(depending on your altitude and air pressure)
|
| That is overlooking that the air rotates in mostly laminar fashion with
| the platters, isn't it ?
That depends on whether they're African or European drives..
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