attosecond

Thân thiện

A scientist uses an attosecond laser to study electron motion.

Definition

1. Noun:
   • A unit of time equal to one quintillionth (10⁻¹⁸) of a second: An attosecond is an extremely short duration of time, specifically one billionth of a billionth of a second. It is used in scientific fields like physics and chemistry to measure ultrafast events.
   • One thousandth of a femtosecond: An attosecond is a subdivision of a femtosecond, which is itself 10⁻¹⁵ seconds.

Usage Examples

• Noun:
  • Scientists can now measure processes that occur on an attosecond timescale.
  • The lifetime of certain atomic transitions is measured in attoseconds.

Advanced Usage

• "Attosecond science" or "Attosecond physics": Refers to the branch of science that studies phenomena occurring within attoseconds.
  • Attosecond physics allows us to observe the motion of electrons.
• "Attosecond pulse": Refers to a pulse of light that lasts for attoseconds.
  • Researchers generated an attosecond pulse of X-ray light.

Variants and Related Words

• Femtosecond (n): A unit of time equal to 10⁻¹⁵ seconds, or one thousand attoseconds.
• Picosecond (n): A unit of time equal to 10⁻¹² seconds.
• Attosecond-scale (adj): Describing phenomena or measurements on the order of attoseconds.

Synonyms

• Unit of time: (General category)
• Ultrafast time unit: (Descriptive term)

Related Phrases

• On the attosecond scale: Happening within a timeframe of attoseconds.
  • Chemical bonds can break on the attosecond scale.

Học thuật

Noun

1. one quintillionth (10^-18) of a second; one thousandth of a femtosecond