Discussion Overview
The discussion revolves around the calculation of the refractive index of liquids using a converging lens and mirror, specifically examining the feasibility of this method for liquids with refractive indices both lower and higher than that of glass. Participants explore the implications of using different liquids, including water and mercury, and the conditions under which real images can be formed.
Discussion Character
- Exploratory, Technical explanation, Debate/contested
Main Points Raised
- One participant suggests that the refractive index of water can be calculated using a converging lens and mirror, noting that water's refractive index is less than that of glass.
- Another participant questions the applicability of this method for mercury, arguing that since mercury has a higher refractive index than glass, rays may diverge and no real image would be formed, though they express uncertainty about whether this would always be the case.
- A subsequent post points out that mercury may not be a suitable example due to its opacity, which complicates the definition of its refractive index.
- Another participant expresses confusion about what is meant by "standard method," indicating that there are various methods to measure refractive index applicable to both higher and lower refractive indices compared to glass.
- A participant provides a link to a related thread for further reference.
Areas of Agreement / Disagreement
Participants do not reach a consensus on the applicability of the method for liquids with higher refractive indices than glass, and there are competing views regarding the suitability of mercury as an example.
Contextual Notes
The discussion highlights potential limitations in the definitions and methods used for measuring refractive indices, particularly regarding the conditions under which real images can be formed.