What is the purpose of gradient in photoshop?

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The Gradient tool creates a gradual blend between multiple colors

ou can easily create a gradient effect using the Gradient Tool in Adobe Photoshop CS5. Choose the Gradient tool and click and drag across an image area to create a gradient in the direction and length of the mouse motion. A short drag creates a short gradient; a long drag produces a smoother, longer gradient.

From the Options bar, you also can choose the type of gradient you want: Linear, Radial, Angle, Reflected, or Diamond.

As a default, gradients are created using the current foreground and background colors. Click the arrow on the Gradient button on the Options bar to assign a different preset gradient.

The Gradient tool creates a gradual