relative humidity

Thân thiện

A hygrometer shows that the relative humidity is 85% today.

Definition

1. Noun:
   • A measure of atmospheric moisture: Relative humidity is the ratio, expressed as a percentage, of the amount of water vapor present in the air to the maximum amount the air could hold at the same temperature.

Usage

• Relative humidity is a key metric in meteorology, climatology, and for assessing indoor comfort.
• It is always expressed as a percentage (%).
• A higher percentage indicates air that is closer to being fully saturated with moisture at its current temperature.

Examples

• Noun:
  • The relative humidity today is 85%, so it feels very muggy.
  • Low relative humidity in winter can cause dry skin and static electricity.
  • Meteorologists report the temperature and the relative humidity.

Advanced Usage

• "Relative humidity is a critical factor...": Used to introduce its importance in various contexts.
  • Relative humidity is a critical factor in the preservation of archival documents.
• "As a function of relative humidity": Used in technical descriptions of how something changes with moisture levels.
  • The material's expansion is measured as a function of relative humidity.

Variants and Related Words

• Absolute humidity (n): The actual mass of water vapor present in a given volume of air.
• Dew point (n): The temperature to which air must be cooled to become saturated with water vapor (closely related to relative humidity).
• Humid (adj): Marked by a high degree of relative humidity.
  • The weather was hot and humid.

Synonyms

• Moisture content (of the air): A more general term for the amount of water vapor present.
• Humidity level: A common alternative phrasing in everyday language.

Related Phrases

• "Percent relative humidity": The full, formal phrasing.
  • The instrument displays the percent relative humidity.
• "RH": A common abbreviation used in technical and weather contexts.
  • The recommended RH for the storage room is 50%.

Học thuật

Noun

1. the ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature; expressed as a percentage