Which navigational outcome was achieved using an astrolabe's shadow-casting alidade?

💡 Explanation

By measuring the sun's altitude with the alidade, local solar time is directly derived using geometric calculations, because the astrolabe uses stereographic projection to map celestial coordinates; therefore, time calculation is possible, rather than direct star luminosity or planetary positions without further calculation.

• Which consequence risked Byzantine power because of tributary relations?
• Which crucial advantage did counterweight trebuchets provide besieging armies, surpassing earlier designs?
• Which innovation allowed medieval Islamic engineers to more precisely determine Qibla direction, even at extreme distances?
• Which mechanism degraded astronomical readings when brass Medieval astrolabes underwent differential expansion?
• Which outcome accelerated erosion when terrace farming lacked proper drainage during the Inca Empire?
• Within a Roman siege ramp against a fortress, which outcome is LEAST likely when timber support collapses?