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Chapter 7: Problem 20

What do we mean by the frequency of electromagnetic radiation? Is the frequency the same as the speed of the electromagnetic radiation?

Short Answer

Expert verified
Frequency in the context of electromagnetic radiation refers to the number of full electromagnetic wave oscillations that occur in one second, measured in Hertz (Hz). The speed of electromagnetic radiation is the constant speed at which these waves travel through space, approximately \(3 \times 10^8\) meters per second. They are not the same thing; electromagnetic radiation can have different frequencies while the speed remains constant. The relationship between frequency and speed can be represented by the equation \(v = 位f\), where \(v\) is the speed, \(位\) is the wavelength, and \(f\) is the frequency. The frequency and wavelength are inversely proportional, but the speed remains constant regardless of frequency or wavelength.

Step by step solution

01

Definition of Frequency

Frequency refers to the number of full electromagnetic wave oscillations that occur in one second. It is measured in Hertz (Hz), which is equal to one oscillation per second.
02

Definition of Speed of Electromagnetic Radiation

The speed of electromagnetic radiation is the speed at which these waves travel through space. For all types of electromagnetic radiation, this speed is always constant and equal to the speed of light, approximately \(3 \times 10^8\) meters per second.
03

Relationship between Frequency and Speed of Electromagnetic Radiation

While both frequency and speed are associated with electromagnetic radiation, they are not the same thing. Electromagnetic radiation can have different frequencies, but the speed at which the waves travel remains constant. To better understand the relationship between frequency and speed of electromagnetic radiation, we can refer to the following equation: \(v = 位f \) Where: - \(v\) is the speed of electromagnetic radiation (constant, equal to the speed of light) - \(位\) (lambda) is the wavelength of the electromagnetic wave - \(f\) is the frequency of the electromagnetic wave From this equation, we can see that frequency and wavelength are inversely proportional, which means that as the frequency of electromagnetic radiation increases, the wavelength decreases, and vice versa. However, the speed of the electromagnetic radiation remains constant and does not depend on its frequency or wavelength.

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Most popular questions from this chapter

In the second row of the periodic table, \(\mathrm{Be}, \mathrm{N}\), and \(\mathrm{Ne}\) all have endothermic (unfavorable) electron affinities, whereas the other second-row elements have exothermic (favorable) electron affinities. Rationalize why Be, \(\mathrm{N}\), and Ne have unfavorable electron affinities.

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