Journey in Life: 09/02/15

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Wednesday, September 2, 2015

"Out of phase" nghĩa là gì?

Lần tìm điệu nhạc. Photo courtesy Edward Balch.

'Out of phase' nghĩa là lệch pha, lạc điệu (in an unsynchronized or uncorrelated way).

Ví dụ
But when they are out of phase, they are so much quieter, you can't quite hear them—they actually diminish (giảm nửa âm, giáng âm) each other.

If these two configurations are out of phase then the radiation will be cancelled out, even though the electromagnetic fields (trường điện từ) are non-zero in the area close to the currents (dòng điện).

Mr. Furmanek believes it was a lack of quality control in the projection booth that sabotaged (phá hoại ngầm) the medium. “In too many theaters, the shutters were out of phase and the poor alignment gave people headaches. It was shoddy (xấu, chất lượng kém) projection that killed 3-D.”

Too far to the east to have experienced the Roman Empire (though “czars” claimed the “Caesars” as their political and etymological forebears), Christian but looking to the Orthodox Church in Constantinople rather than Rome for spiritual authority, Russia was close enough to Europe to share a common cultural vocabulary yet perpetually out of phase with the Continent’s historical trends.

Phạm Hạnh

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