Rayleigh scattering intensity is most sensitive to which factor?

Rayleigh scattering intensity is most sensitive to which factor?

• A. Frequency
• B. Amplitude
• C. Medium Color
• D. Operator Technique

Answer: (A)

Rayleigh scattering intensity is determined by how strongly the particles scatter light as a function of the light’s frequency (or wavelength). In this regime, the scattering cross-section scales with the fourth power of frequency, equivalently with the inverse fourth power of wavelength. That means higher frequencies (shorter wavelengths) scatter far more than lower frequencies, which is why you see a blue sky—the blue light is scattered all around the atmosphere much more than red light. The other factors listed don’t set this sharp spectral dependence: amplitude would change overall brightness but not how quickly scattering rises with frequency; medium color is a perceptual outcome of wavelength, not the scattering physics itself; operator technique has no bearing on the physical scattering.

Rayleigh scattering intensity is determined by how strongly the particles scatter light as a function of the light’s frequency (or wavelength). In this regime, the scattering cross-section scales with the fourth power of frequency, equivalently with the inverse fourth power of wavelength. That means higher frequencies (shorter wavelengths) scatter far more than lower frequencies, which is why you see a blue sky—the blue light is scattered all around the atmosphere much more than red light. The other factors listed don’t set this sharp spectral dependence: amplitude would change overall brightness but not how quickly scattering rises with frequency; medium color is a perceptual outcome of wavelength, not the scattering physics itself; operator technique has no bearing on the physical scattering.