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It is frequently stated that using the plural antennae for electrical aerials is incorrect. Those who say this believe that there is a grammatical rule that the plural in the context of radio is antennas and in the context of biology (insect feelers for example) the plural is antennae. This may have crystallised into a firm rule in the US, but ...
Antenna (radio), also known as an aerial, a transducer designed to transmit or receive electromagnetic (e.g., TV or radio) waves Antenna types, a list of the many different types of radio and microwave antennas
If the latter meaning is intended, the word (though singular in form) may be treated as if it were a plural, in that it may take a plural verb and be replaced with a plural pronoun: (in British English) the government are considering their position (alternatively the government is considering its position).
The antenna gain, or power gain of an antenna is defined as the ratio of the intensity (power per unit surface area) radiated by the antenna in the direction of its maximum output, at an arbitrary distance, divided by the intensity radiated at the same distance by a hypothetical isotropic antenna which radiates equal power in all directions.
An antenna focuses the radio waves in a certain direction. Usually, this is called the main direction. Because of that, in other directions less energy will be emitted. The gain of an antenna, in a given direction, is usually referenced to an (hypothetical) isotropic antenna, which emits the radiation evenly strong in all directions.
Antennae (sg.: antenna) (sometimes referred to as "feelers") are paired appendages used for sensing in arthropods. Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments.
Why do cats knead? Kittens knead their mother's mammary glands, or breasts, while nursing, likely to aid the release of milk. Animal experts call this process "milk let down," said Sung, who is ...
colloquial term for pound sterling (plural is quid also; in Ireland it referred to the punt and now refers to the euro) (related US: buck) a measure (mouthful) of chewing tobacco quite to some extent or degree, e.g. in the phrase "quite good" meaning "mediocre, acceptable" or "good, well done" (a meiotic usage, depending on voice intonation)