What is elastic after-effect?

Explanation

### Step-by-Step Solution:

1. **Definition of Elastic After-Effect**:
Elastic after-effect refers to the phenomenon where an elastic body does not immediately return to its original shape after the deforming force is removed. Instead, there is a temporary delay before it fully recovers its original configuration.

2. **Behavior of Elastic Bodies**:
When a deforming force is applied to an elastic body, it undergoes a change in shape or size. This change is typically reversible, meaning that once the force is removed, the body should return to its initial state.

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