dielectric
Meaning: An insulating material or substance that can be polarised by an applied electric field, used extensively in capacitors, transmission lines, and electronic components.
A dielectric does not conduct electricity but can support an electrostatic field and store energy when placed between charged plates. Common dielectrics include glass, ceramic, rubber, and various plastics. The term functions both as a noun and an adjective, and it appears frequently in engineering specifications, physics papers, and materials science research. Dielectric strength — the maximum field a material can withstand before breakdown — is a critical safety parameter.
Examples
- The dielectric layer between the capacitor plates was made of barium titanate to maximise energy storage. 电容器极板之间的电介质层由钛酸钡制成,以最大限度地储存能量。La capa dieléctrica entre las placas del condensador estaba fabricada con titanato de bario para maximizar el almacenamiento de energía.コンデンサの極板間の誘電体層はチタン酸バリウムで作られ、エネルギー蓄積量を最大化した。커패시터 극판 사이의 유전체층은 에너지 저장량을 극대화하기 위해 티탄산바륨으로 제작되었다.
- Engineers selected a low-loss dielectric for the printed circuit board to reduce signal attenuation at high frequencies. 工程师为印刷电路板选择了低损耗电介质,以减少高频信号的衰减。Los ingenieros seleccionaron un dieléctrico de bajas pérdidas para la placa de circuito impreso con el fin de reducir la atenuación de la señal a altas frecuencias.エンジニアはプリント基板に低損失の誘電体を選定し、高周波での信号減衰を低減した。엔지니어는 고주파에서의 신호 감쇠를 줄이기 위해 인쇄회로기판에 저손실 유전체를 선정했다.
- The dielectric constant of water is unusually high, which explains many of its distinctive solvent properties. 水的介电常数异常高,这解释了它作为溶剂的许多独特性质。La constante dieléctrica del agua es inusualmente alta, lo que explica muchas de sus propiedades disolventes tan características.水の誘電率は異常に高く、これが溶媒としての多くの特徴的な性質を説明している。물의 유전 상수는 비정상적으로 높으며, 이것이 용매로서의 많은 독특한 성질을 설명해 준다.
Pronunciation
Usage Guide
Context: scientific, academic, professional
Tone: neutral
Origin & History
Coined by William Whewell in 1836 from Greek dia- (through) and electric, literally meaning 'that through which electricity passes.' The term was introduced at Michael Faraday's request.
Cultural Context
Era: Modern
Generation: All ages
Social background: Universal
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