F layer
معنی کامل و مثالها
● (فضاشناسی - رادیو) لایهی اف (لایهی همفشردهای در یون کره که امواج رادیویی را بازتاب میدهد)
ریشه و کاربرد
ریشه
The term 'F layer' comes from the field of ionospheric physics. The 'F' stands for 'free', referring to the free electrons in this layer.
مثال
- The F layer is the most important layer for high-frequency radio communication.
- During the day, the F layer splits into two sub-layers, the F1 and F2 layers.
- The F layer's ionization levels fluctuate with the sun's activity.
ترکیبهای رایج
F layer ionization F layer communication F layer reflection
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