achromatic

/,ækrou'mætik/

Thân thiện

A scientist adjusts the achromatic lens of a microscope.

Definition

1. Adjective:
   • Having no hue; being neutral in color: Describes something that lacks color or is colorless, specifically referring to pure neutral tones like black, white, and shades of gray.
   • Transmitting light without spectral color separation: In optics, describes a lens or device that does not separate white light into its constituent colors, thus minimizing chromatic aberration.

Usage Examples

• Adjective:
  • The artist preferred an achromatic palette of black, white, and gray for the abstract painting.
  • A high-quality achromatic lens is designed to focus different colors of light to the same point, reducing color fringing.

Advanced Usage

• "Achromatic vision": A medical or biological term for complete color blindness, where one sees only in shades of gray.
  • The condition of achromatic vision, or monochromacy, is very rare.
• "Achromatic interval": In physiology, the range of light intensity where the cones in the eye are not stimulated, so only rods (which don't detect color) are active, resulting in a lack of color perception.
  • In very dim light, we see within the achromatic interval.

Variants and Related Words

• Achromatism (noun): The state or condition of being achromatic; in optics, the correction of a lens so it is free of chromatic aberration.
  • The achromatism of the telescope's objective lens was critical for clear astronomical observation.
• Achromatize (verb): To render achromatic; to remove color from.
  • The process aimed to achromatize the stained fabric.

Synonyms

• Colorless: Having no color.
• Neutral: (In color theory) A color without hue, such as black, white, or gray.
• Monochrome: Consisting of or displaying images in black, white, and shades of gray.

Antonyms

• Chromatic: Relating to or produced by color; having color or hues.
• Colorful: Having many or bright colors.
• Polychromatic: Showing a variety or a change of colors.

Related Phrases / Compound Terms

• Achromatic color: A color that possesses no hue, such as black, white, or gray.
  • In design, achromatic colors are often used to create a sense of sophistication.
• Achromatic doublet: A type of lens made from two pieces of glass with different dispersion properties, designed to cancel out chromatic aberration.
  • The microscope uses an achromatic doublet for a clearer, color-accurate image.

Học thuật

Adjective

1. having no hue
   • neutral colors like black or white

Từ đồng nghĩa

• neutral