WHAT DOMINANT THE COLOUR OF SODIUM STREET LAMB
Bright yellow.
A better worded question would help me in helping you.
Yes. The color is bright yellow for sodium lamps. The wavelength for Na in the visible region is a doublet of 589.0 nm and 589.59 nm. Those are the dominant wavelengths (for the visible). There is another doublet in the ultraviolet region of 330.23 nm and 330.30 nm.
The dominant color of sodium street lamps is yellow. The reason for this is because the lamps use a high-pressure sodium (HPS) technology, which produces a specific wavelength of light that appears yellow. This yellow light is more energy-efficient and provides better visibility for drivers and pedestrians at night.
To find this answer, you can refer to reliable sources such as physics or lighting textbooks, or search online using keywords like "dominant color of sodium street lamps" or "HPS lighting." Websites of lighting manufacturers or municipal lighting departments can also provide detailed information on the color and technology used in street lamps.