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A Holweck pump is a type of vacuum pump that utilises the drag of air molecules against a rotating surface. The modern turbomolecular pump is a more advanced version based on similar operation, and a Holweck pump is often used as the backing pump for it. The Holweck pump can produce a vacuum as low as 10−8 mmHg.

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  • A Holweck pump is a type of vacuum pump that utilises the drag of air molecules against a rotating surface. The modern turbomolecular pump is a more advanced version based on similar operation, and a Holweck pump is often used as the backing pump for it. The Holweck pump can produce a vacuum as low as 10−8 mmHg.
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