Why newton ring centre is dark?

More Questions

• Why newton rings are circular?
• Why are newton's rings circular?
• Why is my upper lip dark?
• Why do women wear toe rings?
• Why is my neck dark?
• Why is my private area dark?
• How to know gabit ring is fully charged?
• Why do we store silver chloride in dark coloured bottles?
• Why armpits become dark?
• What is the screen size of new fire-boltt ring smartwatch?