Definition

Noun: - Spectrum: In physics, "quang phổ" refers to the entire range of electromagnetic radiation, or more specifically, the band of colors (like a rainbow from red to violet) produced when light is dispersed, as through a prism. It represents the distribution of light or other radiation according to its wavelength or frequency.

Usage Examples

• Noun:
  • Ánh sáng mặt trời khi đi qua lăng kính sẽ tạo thành một dải quang phổ. (Sunlight passing through a prism forms a spectrum.)
  • Các nhà thiên văn học phân tích quang phổ của các ngôi sao để biết thành phần của chúng. (Astronomers analyze the spectrum of stars to determine their composition.)
  • Máy quang phổ là dụng cụ dùng để quan sát và đo đạc quang phổ. (A spectrometer is an instrument used to observe and measure a spectrum.)

Advanced Usage

• "Phân tích quang phổ" (spectrum analysis/spectroscopic analysis): A method of studying substances by examining the spectra they emit or absorb.
  • Phân tích quang phổ được ứng dụng rộng rãi trong hóa học và vật lý. (Spectrum analysis is widely applied in chemistry and physics.)

Variants and Related Words

• Quang phổ kế (Spectrometer): An instrument used to measure properties of light over a specific portion of the electromagnetic spectrum.
• Quang phổ học (Spectroscopy): The scientific study of the interaction between matter and electromagnetic radiation as a function of the wavelength or frequency.
• Kính quang phổ (Spectroscope): An optical instrument used for producing and observing spectra.

Synonyms

• Phổ (Spectrum): A more general or abbreviated term for "quang phổ".
• Dải màu (Band of colors): Descriptive term for the visible part of the spectrum.

Related Phrases

(Note: "Quang phổ" is primarily a scientific noun and does not form phrasal verbs in the grammatical sense. The related phrases are compound nouns.) - Quang phổ hấp thụ (Absorption spectrum): The spectrum of electromagnetic radiation transmitted through a substance, showing dark lines or bands where energy is absorbed. - Quang phổ phát xạ (Emission spectrum): The spectrum of electromagnetic radiation emitted by a substance. - Quang phổ liên tục (Continuous spectrum): A spectrum that contains all wavelengths or colors without any gaps.

Related Idioms

(Note: "Quang phổ" is a technical/scientific term and is not commonly used in idiomatic expressions in everyday Vietnamese.)

noun

1. (ph) spectrum
   • quang phổ kế
     spectrometer