xạ khí

Một ống nghiệm chứa xạ khí được đặt trong phòng thí nghiệm.

Definition

1. Noun:
   • Emanation: In physics and chemistry, "xạ khí" refers to a gaseous substance, particularly a radioactive gas, that is emitted or given off from a source material. This is a technical term for a type of radon isotope or similar radioactive emission.

Usage Examples

• Noun:
  • Các nhà khoa học đang đo lượng xạ khí trong hang động. (Scientists are measuring the amount of emanation in the cave.)
  • Xạ khí radon có thể nguy hiểm cho sức khỏe. (Radon emanation can be dangerous to health.)

Advanced Usage

• This term is highly specialized and primarily used in scientific contexts such as physics, chemistry, geology (e.g., measuring radon gas from rocks), and environmental health.

Variants and Related Words

• Khí phóng xạ (n): radioactive gas. A more descriptive and common term with a similar meaning.
  • Việc kiểm tra khí phóng xạ trong nhà là rất quan trọng. (Checking for radioactive gas in the house is very important.)

Synonyms

• Emanation: (in scientific context) a substance, especially a gas, that flows out or is emitted from a source.
• Radioactive gas: a gas that emits radiation.

Notes on Usage

• "Xạ khí" is a formal, technical term. In everyday language or even in most scientific reporting, the term "khí phóng xạ" (radioactive gas) is more frequently used and understood.
• It is a compound noun where "xạ" relates to shooting/emitting (often in a radioactive context) and "khí" means gas.