Letter | Published:

Frictional Torque of an Axial Magnetic Suspension

Naturevolume 140pages3031 (1937) | Download Citation



A VERTICAL needle of iron suspended in vacuo by the co-axial field of a solenoid theoretically may have infinitesimal frictional torque against axial rotation. The purpose of the present note is to report an observed value of this frictional torque.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Holmes, F. T., Phys. Rev., 51, 689 (1937).

  2. 2

    Reported by F. T. Holmes at meeting of the Va. Acad. Sci., May 7, 1937.

  3. 3

    Beams, J. W., Weed, A. J., and Pickels, E. G., Science, 78, 338 (1933).

Download references

Author information


  1. Rouss Physical Laboratory, University of Virginia

    • F. T. HOLMES
    •  & J. W. BEAMS


  1. Search for F. T. HOLMES in:

  2. Search for J. W. BEAMS in:

About this article

Publication history

Issue Date




By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.