Difference Between Low & High Pressure Sodium Lights | ehow
High-Pressure Sodium Lights vs LED | Action Services Group
Any ideas about how to create a Sodium Vapor Lamp in cycles? The default light has accurate color reproduction, akin to a yellow led. The effect I'm looking for is the monochromatic
Shining a light on low-pressure sodium lamps in DESTINY | NGV
Osram 281179 - High Pressure Sodium Light Bulb | LightBulbs.com
Sodium-vapor lamp - Wikipedia
Lighting Comparison: LED vs High Pressure Sodium/Low Pressure Sodium
Like It or Not, Chicago's About to Get a Lot Less Orange – Chicago Magazine