Related Clues:

• Times Square gas
• Eye-catching sign material
• Gas in some fluorescent lights
• None like a city light
• Topics about eyes
• Scientific study of light and vision
• City light - none like it
• Organs of sight, eyes
• None like bright city light
• Study of the physical properties of light
• Devices attached to bottles to measure out spirits
• The science of light
• Scientific studies of light and vision, the eyes
• The scientific study of light and vision
• Brightly coloured advertising sign