antenna
noun (countable)
UK/ænˈten.ə/US/ænˈten.ə/
One of the pair of long, thin appendages on the heads of insects and other arthropods, used for sensing the environment.
同義詞典
同義詞
verb (transitive)
UK/ænˈten.ə/US/ænˈten.ə/
To equip with an antenna or antennas.
同義詞典
同義詞
反義詞
使用方式
A flexible appendage on the heads of insects and other arthropods used for sensing their environment, or a device used to transmit or receive radio waves and other signals.The term "antenna" has two primary meanings, each relevant to different contexts:1. **Biological Definition**: In biology, an antenna refers to one of a pair of flexible, jointed appendages on the heads of insects and other arthropods. These structures are vital sensory organs used for detecting environmental stimuli such as touch, smell, sound, and even chemical signals. For example, "The butterfly's antennae help it navigate through the air and locate flowers." Antennae play a crucial role in an insect's ability to interact with its surroundings, aiding in activities like finding food, avoiding predators, and communicating with other members of its species.2. **Technological Definition**: In technology, an antenna is a device designed to transmit or receive electromagnetic waves, particularly radio waves. Antennas are essential components in various communication systems, including radio, television, mobile phones, and satellite communications. For instance, "The radio tower's antenna broadcasts signals across the region." Antennas come in various shapes and sizes, each optimized for specific frequencies and applications. They convert electrical signals into electromagnetic waves and vice versa, facilitating wireless communication and data transfer.**Additional Contexts**:- **Astronomy**: Antennas are used in radio telescopes to detect and analyze cosmic radio waves.- **Robotics and Automation**: Some robots are equipped with antenna-like sensors to navigate or detect obstacles.Understanding the context in which "antenna" is used is crucial for interpreting its intended meaning, whether referring to a biological structure or a technological device.
替代選項
When seeking alternatives or related terms for "antenna," consider the following based on context:1. **Biological Context**: - "Sensory appendage": Emphasizes the role of antennae in sensing the environment. - "Feelers": A colloquial term often used interchangeably with antennae. - "Tarsi": Refers to specific parts of the antenna, though not a direct synonym.2. **Technological Context**: - "Transceiver": A device that can both transmit and receive signals. - "Dish": Often used in the context of satellite communications (e.g., satellite dish). - "Antenna array": Refers to a group of antennas working together. - "Wireless signal receiver": Describes the function of receiving signals without specifying the device.3. **General/Metaphorical Context**: - "Signal receiver": Focuses on the function of receiving signals. - "Broadcasting device": Highlights the role in transmitting information. - "Receiver": A broader term applicable in various contexts involving signal reception.Choosing the right alternative depends on the specific nuance and context in which "antenna" is used, ensuring precise and effective communication.
寫作
In formal or academic writing, "antenna" can be utilized to explore topics in biology, engineering, and communication technologies. For example:- **Biological Research**: "The study investigates the sensory capabilities of beetle antennae in detecting pheromones for mating purposes." This usage focuses on the biological function of antennae in insects.- **Engineering and Technology**: "Advancements in antenna design have significantly improved wireless communication efficiency and range." Here, "antenna" pertains to technological developments in signal transmission.- **Interdisciplinary Studies**: "Understanding the similarities between biological antennae and engineered sensors can inspire innovative designs in robotics." This sentence bridges biology and engineering, highlighting the cross-disciplinary relevance of antenna concepts.When writing about antennae, it is important to clearly define the context to avoid ambiguity between the biological and technological meanings. Incorporating detailed descriptions, diagrams, or examples can enhance the reader's understanding. Additionally, discussing the implications or applications of antenna research in various fields can add depth to the analysis.Furthermore, exploring the evolution of antenna technology or the diversity of antenna structures in different species can provide comprehensive insights. For instance: "The evolution of antenna structures in moths demonstrates remarkable adaptations for sensory perception, which have inspired novel antenna designs in modern communication devices." This approach not only defines "antenna" but also connects its biological and technological aspects, showcasing their interrelated advancements.In summary, using "antenna" in writing requires contextual clarity and a focus on its specific applications and significance within the relevant field of study.
日常對話
In everyday conversations, "antenna" is often used in both its biological and technological senses. For example:- **Talking About Insects**: "Did you see how the butterfly uses its antennae to sense flowers? They’re so cool!"- **Discussing Technology**: "I need to adjust the antenna on my TV to get better reception." - **General Use**: "The satellite dish is just a type of antenna that picks up signals from space." People also use "antenna" in more casual or metaphorical ways:- **Describing Sensitivity**: "She has antennae for picking up on people's moods." Here, it implies that someone is very perceptive.- **Funny Comparisons**: "After getting a haircut, his hair looked like antennae on his head!" Additionally, when talking about gadgets or devices, you might say:- **Tech Talk**: "The new smartphone has a built-in antenna for better signal strength." - **DIY Projects**: "I’m building an antenna for my homemade radio." Using "antenna" casually helps in clearly communicating whether you’re referring to the physical appendage on an insect or the device used for transmitting and receiving signals. It also allows for creative and metaphorical expressions that make conversations more engaging and vivid.
詞源
The word "antenna" originates from the Latin word "antenna," which was borrowed from the Greek "antennos," meaning "a sail yard," metaphorically extended to describe the sensory appendages on insects. The term entered scientific terminology in the early 19th century, initially referring to the external sensory organs of arthropods.In the technological context, "antenna" was adopted to describe devices used for transmitting and receiving electromagnetic waves, drawing a parallel between the extending sensory appendages and the extending signal transmission components. This metaphor highlights the antenna's role in reaching out to capture or emit signals, much like biological antennae sensing the environment.Over time, the dual usage of "antenna" in biology and technology has become well-established, with each field maintaining its distinct meaning while sharing the common theme of extension and reception. The etymological roots emphasize the functional similarity between the biological and technological antennae, both serving as extensions that facilitate interaction with their respective environments.