Spectral Comparison
Spectral Comparison, Daylight & HP Mercury

High-Pressure Mercury Vapor Light versus JMW Daylight
High-Pressure Mercury Vapor Light versus JMW Daylight
Usage note: To see some preset views, click 'view' arrows below the 3D picture.
Each ball and arrow correspond to 1 of 64 Munsell papers measured by Vrhel.
The center of the ball is the paper's stimulus vector under daylight.
The arrow tip is the stimulus vector under High-Pressure Mercury Vapor light.
Tristimulus vector of Mercury Light = [3.751, 0.03204, 1.389].
Tristimulus vector of dayight = [3.751, 0.03474, 1.396].
High pressure mercury vapor light was measured by Worthey in 1985.
Daylight is calculated by the model of Judd, MacAdam & Wyszecki.
All points are plotted by detailed calculations, no simplifying assumptions.

Color Shifts When Daylight --> Mercury Vapor
Projected in v1-v2
Color Shifts When Daylight --> Mercury Vapor
Projected in v2-v3
Shifts of 64 Munsell chips in v1-v2.
Shift of 64 Munsell Chips in v2-v3 plane.