F region
معنی کامل و مثالها
● (بالاترین ناحیهی یونوسفر در ارتفاع بین 140 تا 400 کیلومتر) ناحیهی اف
ریشه و کاربرد
ریشه
The 'F' stands for 'Final', as it was the last layer of the ionosphere to be discovered.
مثال
- The F region plays a crucial role in long-distance radio communication.
- During the day, the F region splits into two layers: F1 and F2.
- The ionization in the F region is primarily caused by extreme ultraviolet radiation.
ترکیبهای رایج
F region ionization Study F region F region layers F region characteristics
تعریف انگلیسی
noun
- the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission