Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← HistoryWhich condition in early Islamic quadrants led to inaccurate angular measurements?
A)Thermal expansion of brass arms✓
B)Sublimation affecting sighting materials
C)Insufficient magnetic declination correction
D)Hysteresis due to imperfect bearings
💡 Explanation
In early devices, thermal expansion modified inscribed angles, skewing altitude measurements; this is thermal distortion, because brass's coefficient expands significantly on warm summer days, therefore measurements were erroneous, rather than only suffering from sighting imperfections.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse History →- Which practical consequence occurred because early astrolabes lacked fine angular calibration?
- Which outcome occurred when the Roman army rapidly constructed roads?
- Which consequence results when wood's moisture content is excessive during construction in 18th-century ship building?
- Which risk increased when medieval Islamic scholars studied refraction?
- Which mechanism primarily enabled the construction of stable, multi-story ziggurats in ancient Mesopotamia?
- Which structural failure was reduced due to Roman concrete in harbor fortifications?
