pulsar
Significado: A highly magnetised, rapidly rotating neutron star that emits beams of electromagnetic radiation at regular intervals, detected as pulses when the beam sweeps past the Earth.
Pulsars rotate with extraordinary precision, making them some of the most accurate clocks in the universe. They were first discovered in 1967 by Jocelyn Bell Burnell at Cambridge, and their regularity initially led to speculation about artificial signals. In academic writing, pulsars appear in discussions of gravitational waves, general relativity, and the interstellar medium.
Ejemplos
- The millisecond pulsar detected by the Jodrell Bank Observatory rotated over six hundred times per second. 乔德雷尔·班克天文台探测到的毫秒脉冲星每秒旋转超过六百次。El púlsar de milisegundos detectado por el Observatorio de Jodrell Bank rotaba más de seiscientas veces por segundo.ジョドレルバンク天文台が検出したミリ秒パルサーは、毎秒600回以上回転していた。조드렐 뱅크 천문대가 검출한 밀리초 펄서는 초당 600회 이상 회전하고 있었다.
- Pulsars have proved invaluable as natural laboratories for testing predictions of general relativity. 脉冲星作为检验广义相对论预测的天然实验室,已被证明具有不可估量的价值。Los púlsares han demostrado ser laboratorios naturales de valor incalculable para verificar las predicciones de la relatividad general.パルサーは一般相対性理論の予測を検証するための天然の実験室として、計り知れない価値を証明してきた。펄서는 일반 상대성 이론의 예측을 검증하기 위한 천연 실험실로서 매우 귀중한 가치를 입증해 왔다.
- The timing irregularities of the binary pulsar provided the first indirect evidence for gravitational waves. 双星脉冲星的计时异常为引力波的存在提供了首个间接证据。Las irregularidades de temporización del púlsar binario proporcionaron la primera evidencia indirecta de las ondas gravitacionales.連星パルサーのタイミング異常は、重力波の存在に関する初の間接的証拠を提供した。쌍성 펄서의 타이밍 불규칙성은 중력파의 존재에 대한 최초의 간접적 증거를 제공했다.
Pronunciación
Guía de uso
Contexto: academic, scientific
Tono: neutral
Origen e historia
Coined in 1968 as a contraction of 'pulsating star,' by analogy with 'quasar.' The term was suggested by Daily Telegraph science correspondent Anthony Michaelis.
Contexto cultural
Era: Modern
Generation: All ages
Social background: Universal
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