The Sky Is The Limit

Sky luminance distribution models have been recommended by the International Commission on Illumination (CIE) for the design of daylighting schemes. Recent developments relate to “all-sky models” for modeling sky luminance under weather conditions ranging from clear to overcast.

Our Planet Is Constantly Spinning

The Sun is not the only object that may appear less blue in the atmosphere. Distant clouds or snowy mountaintops may appear yellowish. The effect is not very obvious on clear days but is very pronounced when clouds cover the line of sight, reducing the blue hue from scattered sunlight.


Nextra Aerospace Inc. is an air mobility battery developer in Toronto, Canada. We are a tech startup providing solutions to the urban air mobility industry. We are offering a new lithium-ion battery with safety, efficiency and cost effectiveness as standard priorities.

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