nanometer

Thân thiện

A scientist measures a nanoparticle using a device calibrated in nanometers.

Definition

1. Noun:
   • A unit of length in the metric system: A nanometer is a unit of measurement equal to one billionth (1/1,000,000,000) of a meter.

Usage

• The term "nanometer" is used primarily in scientific and technical contexts, especially in fields like physics, chemistry, materials science, and biology, to describe extremely small scales, such as the size of atoms, molecules, and microscopic structures.
• It is often abbreviated as nm.

Examples

• Noun:
  • A single water molecule is about 0.3 nanometers in diameter.
  • The new processor uses transistors that are only 5 nanometers wide.
  • Visible light has wavelengths between approximately 400 and 700 nanometers.

Advanced Usage

• "On the order of nanometers": Used to describe sizes or distances that are approximately a few nanometers.
  • The thickness of the graphene layer is on the order of nanometers.
• "Sub-nanometer": Refers to measurements or resolutions smaller than one nanometer.
  • The microscope achieved sub-nanometer resolution.

Variants and Related Words

• Nanoscale (adj/n): Relating to dimensions or phenomena measured in nanometers.
  • Nanoscale engineering is crucial for modern electronics.
• Nanotechnology (n): The branch of technology that deals with dimensions and tolerances of less than 100 nanometers.
  • Nanotechnology has applications in medicine and manufacturing.

Synonyms

• Millimicron (n): An older, synonymous term for nanometer, equal to 10⁻⁹ meters. (Note: "Nanometer" is the standard modern term.)

Related Phrases

• Nanometer precision: The ability to measure or control something with an accuracy of nanometers.
  • The machine assembles parts with nanometer precision.

Học thuật

Noun

1. a metric unit of length equal to one billionth of a meter

Từ đồng nghĩa

• nanometre
• nm
• millimicron
• micromillimeter
• micromillimetre