AXIS n.
three straight lines in which the coördinate planes intersect each other. -- Axis of a balance, that line about which it turns. -- Axis of oscillation, of a pendulum, a right line passing through the center about which it vibrates, and perpendicular to the plane of vibration. -- Axis of polarization, the central lin…
BEE n.
.), an orchidaceous plant of the genus Ophrys (O. apifera), whose flowers have some resemblance to bees, flies, and other insects. -- Bee fly (Zoöl.), a two winged fly of the family Bombyliidæ. Some species, in the larval state, are parasitic upon bees. -- Bee garden, a garden or inclosure to set beehives in ; an api…
BIFILAR a.
Two-threaded; involving the use of two threads; as, bifilar suspension; a bifilar balance. Bifilar micrometer (often called a bifilar), an instrument form measuring minute distances or angles by means of two very minute threads (usually spider lines), one of which, at least, is movable; -- more commonly called a filar…