Which systematic error affects altitude measurements taken with a brass astrolabe subject to diurnal temperature variations?

💡 Explanation

When temperature fluctuates daily, differential thermal expansion of the brass limb induces distortion because brass has a relatively high coefficient of thermal expansion causing the circular scale to become slightly elliptical, biasing angle measurements. Therefore limb distortion causes angular bias, rather than parallax which comes from viewing angle; index which comes from initial setup; or collimation relating to optical path alignment.

• Which agricultural innovation mitigated nutrient depletion from continuous maize cultivation in pre-Columbian Mesoamerica?
• Which problem challenged the use of early marine chronometers aboard ships during long voyages?
• Which mechanism explains how Roman concrete resisted cracking over centuries despite temperature changes?
• Which mechanism limited ancient Mesopotamian bronze tools' hardness, creating deformation under high stress during construction work?
• Which structural consequence occurred during the construction of the Vasa ship due to its tall and narrow design?
• Which environmental benefit resulted from the chinampa system's artificial island construction in pre-Columbian Mesoamerica?