Either condition might develop from the generalized biramous antennas of Trilobita, but the present evidence indicates a tendency toward obsolescence.
In the adult, the antennules, which serve for attachment of the larva, usually persist in a functionless condition, while the antennas disappear.
The antennules appear to be short, while the antennasare large, with several segments, ending in three spines, and apparently adapted for serving as claspers in the male.
On a supposed discovery of the antennas of trilobites by Linnaeus in 1759.
The antennules and pleural lobes must be lost, the antennas and trunk limbs modified by loss of exopodites.
The possible presence of antennasand three other appendages belonging to the cephalic shield is mentioned, and there are tips of fourteen legs projecting from beneath the side of one specimen.
The antennules are imperfectly known, but apparently short, while the antennas are long and slender, with relatively few, long, segments.
The antennas are also locomotor organs, and in most orders are biramous.
Later, when they had connected random length wire antennas to the circuits the two schoolboys were able to talk to each other across the 400 metres which separated their homes.
Its antennas were supported on three very tall wooden masts painted bright yellow.
M5 brass studding rotating inside a block of PTFE linked to a push rod which can move the antennas 75 degrees both sides of the vertical position, either in unison or in opposite directions.
I mounted a small video camera in the centre of four 16-element Yagi antennas and rotated the elevation and azimuth motors until I could see the moon in the centre of the monitor in the shack.
As I became more experienced I began repairing simple broadcast receivers for my friends and putting up wire antennas for reception for people who had bought broadcast receivers.
The reason for the very strong on/off pulses was probably because, at first, the Russians were using existing radar antennas which permit the transmitting and receiving functions to share the same antenna.
The radar antennas were swiveling around, and down.
The supercomputer would then focus these with the phased-array antennas into the propulsion unit of the space vehicle.
When John Hansen took office, the National Security Agency was still liberally exercising its capacity to monitor every phone call in America from its vast array of listening antennas at Fort Meade.
High above the bridge, antennasand communications gear showed faintly against the twilight gloom, gray and huge.
There was no obvious physical injury to VX-2 or to the transmission antennas up on the hill, though the testing and corrections could take weeks.
The conduit also contained fiber-optics bundles for carrying computer data to guide the parabolic antennas up on the mountain as they tracked the space vehicle.
There are giant servo-mechanisms that keep the parabolic antennas trained on the vehicle as it lifts off the pad and heads into orbit.
Those old steel rails themselves act as antennas for the broadcaster, and the rat's tail is the pickup antenna.
It was the barest whisper, picked up by the antennas in his shoes from the steel rail that ran along the floor of the dark tunnel.
Directional yagi antennasfastened to the wing struts of the aircraft were necessary to "home in" on the wolves.
Collars with antennas molded fully inside gave only about two-thirds the range of those protruding partly, but could be expected to last longer because the antennas could not break off.
They traveled on the four rear legs, and held long, sharp, steel-pointed lances in their front antennas and two front legs.
Each cricket was as large as a man, and possessed six legs and two long sharp antennas extending straight out from the eyes.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "antennas" in a variety of sentences. We hope that you will now be able to make sentences using this word.
