Which error dominates sextant accuracy after thermal distortion?

💡 Explanation

When heated unevenly, the brass limb undergoes non-uniform thermal expansion driving graduation errors; thermal expansion affects linear distance rather than constant angular relationships. Therefore limb graduations are disrupted, rather than index error—which is adjusted mechanically under ideal conditions.

• During 18th-century celestial navigation, which outcome occurred because thermal expansion affects metal sextant components?
• Which consequence resulted when ancient terrace construction exceeded friction limits?
• Which defensive outcome resulted from the rapid heating of caldrons when employing Greek fire against siege towers at Constantinople?
• Which outcome was primarily mitigated by the stepped design of Mesopotamian ziggurats managing irrigation flows?
• Which outcome resulted as ancient Chinese iron-hulled ships navigated colder northern waters?
• Which mechanism limited intensive Roman agriculture yields near Ostia?