What ismaser

A Maser which stands for Microwave Amplification by Stimulated Radiation is a device that generates coherent electromagnetic waves through amplification by stimulated emission. This means it emits microwave or radio waves in a predictable and coherent manner. It is comparable to a laser which emits light, only that a maser emits microwaves. The first maser was created in 1953 at Columbia University by Charles H. Townes, James P. Gordon, and Herbert J. Zeiger.

How does a Maser work?

A maser uses a process called stimulated emission, where the atoms within a crystal are excited causing them to release energy in the form of microwaves. These are amplified as they bounce between the reflective surfaces of the crystal and a powerful magnetic field. As a result, they can be emitted in a highly directional and coherent manner.

What are the applications of a Maser?

The versatile and precise nature of maser technology has resulted in its use in various fields. Some of the applications of a maser include spectroscopy, microwave receivers, atomic clocks, military and space applications, and astronomy.


Maser technology has come a long way since its invention in 1953, and its applications in various fields have proven invaluable. Understanding the workings of a maser and its uses can help push scientific boundaries in the years to come.


  • What is the difference between a laser and a maser?
    Both lasers and masers work on the same principle of stimulated emission, but while a laser emits visible or ultraviolet light, a maser emits microwaves or radio waves.
  • What is the most common use of a Maser?
    The most common use of masers is in atomic clocks used for precision timekeeping.
  • What is the cost of a Maser?
    Masers are complex devices and are expensive to manufacture. The cost per unit can vary depending on the specific type and its intended use.

In summary, a Maser is a machine that emits electromagnetic radiation in a predictable, coherent manner. Its versatility and precise operation have made it useful in various fields such as astronomy, military, and atomic clock.

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