Which risk increased for al-Biruni calculating Earth's radius?

💡 Explanation

Systematic angular altitude errors arise if atmospheric refraction is uncorrected, because refraction makes celestial objects appear higher. Therefore inaccurate terrestrial radius calculation happened, rather than errors arising only from instrument precision.

• Which navigational error increases after repeated mechanical chronometer shocks during rough ocean voyages?
• Which risk significantly increased in Mughal 'pietra dura' inlay work when employing soft stones?
• Which obstacle complicated large-scale bronze axe production during the Early Bronze Age Mesopotamian Uruk period?
• Which outcome occurred when wooden sailing ships continuously encountered marine borers?
• Which vulnerability risks catastrophic failure, specifically when early trebuchet siege engines hurled stones exceeding designed payload limits?
• Which limitation was encountered when early Islamic scholars attempted to refine lenses produced using grinding techniques?