Student Question

Which station's signal has waves with higher energy- one that runs at 90.5 MHz or one that runs at 107.1 MHz?


Expert Answers

An illustration of the letter 'A' in a speech bubbles

Radio stations are often referred to by the frequency of the waves they produce. In this case, the stations operate at frequencies of 107.1 and 90.5 Mhz (megahertz). To find out which station produces higher energy waves, the relationship between wave frequency and energy must be observed. 

In 1900, a physicist named Max Planck did many experiments on waves and discovered many things about the relationships between wavelength, frequency and energy. One of the major formulas to come out of his research was the formula that described the relationship between energy and frequency, E=hf. In this formula, the E stands for energy, f for frequency and h for a special constant (known as Planck's constant). This equation shows that as frequency rises, energy also increases. This means that the station with higher frequency waves has higher energy waves. Therefore, the station that runs at a frequency of 107.1 MHz has waves with higher energy than the station that runs at 90.5 MHz. 

See eNotes Ad-Free

Start your 48-hour free trial to get access to more than 30,000 additional guides and more than 350,000 Homework Help questions answered by our experts.

Get 48 Hours Free Access
Approved by eNotes Editorial