electron microscope

/i'lektrɔn'maikrəskoup/

Thân thiện

A scientist examines a sample with an electron microscope.

Definition

1. Noun:
   • A scientific instrument for viewing extremely small objects: An electron microscope is a type of microscope that uses a beam of electrons, rather than light, to create a highly magnified image of a specimen. It provides much greater resolution and magnification than a traditional light microscope.

Usage

• The term "electron microscope" is a compound noun. It is used to refer to the specific instrument itself.
• It is typically used in scientific, medical, and technical contexts.
• Example: "The biologist used an electron microscope to study the detailed structure of the virus."

Examples

• Noun:
  • The laboratory purchased a new electron microscope to advance its nanotechnology research.
  • Images from the electron microscope revealed intricate details of the cell's organelles.

Advanced Usage

• "to be viewed under an electron microscope": to be examined using this instrument.
  • The sample had to be prepared carefully before it could be viewed under an electron microscope.
• "scanning electron microscope (SEM)": a common type of electron microscope that scans a focused electron beam across a surface to create an image.
  • The scanning electron microscope produced a stunning three-dimensional image of the insect's wing.
• "transmission electron microscope (TEM)": a type of electron microscope that transmits a beam of electrons through an ultra-thin specimen.
  • The internal structure of the crystal was analyzed using a transmission electron microscope.

Variants and Related Words

• Electron microscopy (n): The technique or process of using an electron microscope.
  • Electron microscopy is essential for modern materials science.
• Microscope (n): A general instrument for magnifying small objects. "Electron microscope" is a specific subtype.
• Light microscope (n): A microscope that uses visible light and lenses. This is often contrasted with an electron microscope.

Synonyms

• EM (abbreviation): A common abbreviation for "electron microscope."
• Instrument: A general term for a tool or device, especially for scientific work.

Related Phrases

• Electron beam: The stream of electrons used in an electron microscope for illumination.
  • The specimen is illuminated by a focused electron beam.
• High resolution: The ability to distinguish fine detail, a key feature of electron microscopes.
  • The primary advantage of an electron microscope is its high resolution.

Notes

• The word "electron" refers to the subatomic particles used to create the image.
• The word "microscope" comes from Greek roots meaning "to see small things."
• As a compound noun, it is typically not separated. For example, we say "an electron microscope image," not "an electron's microscope image."

Học thuật

Noun

1. a microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light