emission theory

A scientist explains emission theory using a diagram of light rays.

Definition

1. Noun:
   • A scientific theory of light: "emission theory" is the physical theory that light consists of particles emitted by luminous bodies, traveling in straight lines, and producing vision when entering the eye. This theory was historically proposed by Isaac Newton and contrasts with the wave theory of light.

Usage Examples

• (The theory that light is made of emitted particles.)
• (The particle-based model failed to account for wave-like behaviors.)

Advanced Usage

• "emission theory of light": a more precise term referring to the same concept.

  • The emission theory of light was eventually replaced by the wave theory. (The particle model was superseded by the wave model.)

• "corpuscular theory": an alternative name for emission theory, emphasizing the particle nature of light.

  • The corpuscular theory, or emission theory, was Newton's explanation for light propagation. (The particle-based model.)

Variants and Related Words

• Emission (n): the act of sending out or releasing something (e.g., light, heat, gas).

  • The emission of light from the sun is essential for life. (The release of light.)

• Emissive (adj): having the ability to emit radiation or particles.

  • The emissive properties of the material were studied. (Its ability to emit.)

Synonyms

• Corpuscular theory: the theory that light consists of small particles (corpuscles).
• Particle theory of light: a broader term for any model treating light as particles.

Related Idioms