In the visible spectrum, which colour is located at the start?

In the visible spectrum, red is the first color that appears. This is due to its longer wavelength compared to other colors of light. The visible spectrum is typically arranged in the order of increasing wavelength, starting from violet, which has the shortest wavelength, and moving through blue, green, yellow, orange, and ending with red, which has the longest wavelength.

Understanding this sequence helps clarify why red is at the start of the visible spectrum. Light travels in waves, and each color corresponds to a different wavelength. As wavelengths get longer, they shift from violet to red. Therefore, identifying red as the first color is based on its position in the electromagnetic spectrum, specifically in the range we can visually perceive.