SUMMARY
The phase velocity of light in glass with a refractive index (n) of 1.5 is calculated using the formula vp = c/n, where c is the speed of light in vacuum (3x10^8 m/s). The calculation yields a phase velocity (vp) of 2x10^8 m/s. The wavelength (λ) of 500nm is not needed for this specific calculation, as the refractive index is sufficient to determine the phase velocity. This confirms that while n can vary with wavelength, it does not affect the calculation in this instance.
PREREQUISITES
- Understanding of refractive index and its significance in optics
- Familiarity with the speed of light in vacuum (c = 3x10^8 m/s)
- Basic knowledge of phase velocity and its relation to wavelength
- Ability to manipulate algebraic equations for solving physics problems
NEXT STEPS
- Study the relationship between refractive index and wavelength in different materials
- Explore the concept of group velocity in optical media
- Learn about the implications of phase velocity in fiber optics
- Investigate the effects of dispersion on light propagation in glass
USEFUL FOR
Students studying optics, physics educators, and professionals in photonics or optical engineering will benefit from this discussion.