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STEMORIA scientific instrument
Connect latitude, axial tilt, and orbital position to idealized solar declination, day length, and noon Sun elevation.
01
Manipulate
02
Measure
03
Interpret
Scientific viewport
Measured model and controls
Connect latitude, axial tilt, and orbital position to solar declination, approximate day length, and noon solar elevation.
Primary scientific view
Geometry state
δ = asin(sin ε · sin L)
Day length follows the sunrise hour angle.
Sunlight state
Declination
Day length
Noon elevation
Model boundary
Geometric spherical-planet approximation. Refraction, topography, orbital eccentricity, atmospheric attenuation, twilight definitions, and climate response are excluded.