Inverse-Square Law of Gamma Radiation

• What law describes the behavior of gamma radiation intensity with distance?

  Inverse-Square Law
• How does gamma radiation relate to the electromagnetic spectrum?

  It is part of the electromagnetic spectrum
• Why do distant light sources appear fainter?

  They spread out over a greater area
• What happens to light as it leaves its source?

  It spreads out uniformly as a sphere

  
• What is the relationship between area and radius in wave spreading?

  Area is proportional to radius squared
• What is the equation for calculating intensity of gamma radiation?

  I = k / x^2
• What does 'I' represent in the gamma radiation equation?

  Intensity of gamma radiation
• What does 'k' represent in the gamma radiation equation?

  Constant of proportionality
• What does 'x' represent in the gamma radiation equation?

  Distance from the source
• How can the inverse square law be expressed for two different points?

  I1 / I2 = (x2 / x1)^2
• How do you calculate the count rate at a new distance using the inverse square law?

  Use I1 / I2 = (x2 / x1)^2
• What other quantities does the inverse square law apply to?

  Activity or count rate of gamma radiation
• To which types of radiation does the inverse square law not apply?

  Alpha and beta radiation
• Why does the inverse square law not apply to alpha and beta radiation?

  They are absorbed quickly by matter