plural of ladder beam

plural of pilot beam

(rail transport, US) a transverse beam at the end of a locomotive which carries the pilot or cowcatcher.

A field of electromagnetic, acoustic or gravitational radiation whose amplitude is described by a Bessel function of the first kind.

plural of Bessel beam

plural of beam sea

(nautical) A sea whose waves come from abeam and roll against the ship's side. The waves strike the ship beam-on.

plural of rood beam

(architecture) A beam across the chancel of a church for supporting the rood.

plural of section beam