ma-de

Definition

1. Noun:
   • Maser: A device that generates, amplifies, or emits coherent electromagnetic waves, typically in the microwave portion of the spectrum, through the process of stimulated emission. It is the precursor to the laser.
   • Acronym: Stands for "Microwave Amplification by Stimulated Emission of Radiation."

Usage Examples

• Noun:
  • Máy maser được sử dụng trong các đồng hồ nguyên tử cực kỳ chính xác. (The maser is used in extremely accurate atomic clocks.)
  • Nhà khoa học đang nghiên cứu một loại ma-de mới. (The scientist is researching a new type of maser.)

Advanced Usage

• "Hydrogen maser": A specific type of maser that uses the properties of hydrogen atoms and is renowned for its exceptional frequency stability, often used as an atomic frequency standard.
  • Đài thiên văn sử dụng hydrogen ma-de để đo đạc chính xác. (The observatory uses a hydrogen maser for precise measurements.)

Variants and Related Words

• Laser (n): A later-developed device that operates on similar principles of stimulated emission but produces coherent light (optical frequencies) rather than microwaves. The term is "Light Amplification by Stimulated Emission of Radiation."
  • Tia laser có nhiều ứng dụng trong y học và công nghiệp. (The laser beam has many applications in medicine and industry.)

Synonyms

• Microwave amplifier: A device that increases the power of microwave signals.
• Atomic oscillator: A frequency standard that uses the quantum transitions of atoms.

Related Scientific Concepts

• Stimulated emission: The physical process underlying the operation of both masers and lasers, where an incoming photon triggers an excited atom or molecule to emit a second photon of identical properties.
• Coherent radiation: Electromagnetic waves that are in phase and have a single frequency, a key characteristic of maser and laser output.