counterclockwise rotation

Thân thiện

The arrow on the dial shows a counterclockwise rotation.

Definition

Noun: * Rotation to the left; rotation in the opposite direction to the movement of the hands of a standard clock. This term describes a circular motion where the turning object moves from the top to the left, then down, then to the right, and back to the top. It is the standard direction for loosening screws, bolts, and jar lids.

Usage

• Counterclockwise rotation is used to specify the direction of a turn or spin. It is often contrasted with "clockwise rotation."
• It is commonly used in instructions for assembly, mechanics, physics, and dance.

Examples

• To loosen the bolt, apply a counterclockwise rotation with your wrench.
• The physics experiment demonstrated that the fluid formed a vortex with a distinct counterclockwise rotation.
• The dancer executed a perfect pirouette with a counterclockwise rotation.

Advanced Usage

• In technical and scientific contexts, counterclockwise rotation is often synonymous with positive rotation in mathematics (when viewing from a standard reference point) or levorotation in specific fields like chemistry (referring to the rotation of plane-polarized light).
• The phrase "viewed from above" is often implied or stated to clarify the perspective when describing counterclockwise rotation, as the direction can appear reversed from different viewpoints.

Variants and Related Words

• Anticlockwise rotation (noun): Identical in meaning to ; this variant is primarily used in British English.
• CCW (abbreviation): A common abbreviation for .
• Widdershins (adverb, archaic): In a direction contrary to the sun's course, considered unlucky; essentially meaning .

Synonyms

• Left-handed rotation
• Anticlockwise rotation (BrE)
• Levorotation (specialized, e.g., optics, chemistry)

Antonyms

• Clockwise rotation
• Dextrorotation (specialized)

Học thuật

Noun

1. rotation to the left

Từ đồng nghĩa

• levorotation