Frequency of Radiation
A certain radar installation used to track airplanes transmits electromagnetic radiation of wavelength 3cm. What is the frequency of this radiation, measured in billions of hertz.
- 天同Lv 75 年 前最佳解答
Take the speed of electromagentic wave be 3 x 10^8 m/s
Hence, frequency of radiation = 3x10^8/(3/100) Hz = 10^10 Hz = 10 billion Hz
2014-07-24 17:41:27 補充：
Note that in physics, the term "billion Heratz" is rarely used. Instead, we usually use the term Giga-Hertz, abbreviated GHz, to represent 1 "billion hertz".