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| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| personal equation | |
| —n | |
| 1. | the variation or error in observation or judgment caused by individual characteristics |
| 2. | the allowance made for such variation |
personal equation n.
A constant but slight error in judgment, perceptual response, or action that is specific to an individual and is so constant that it is usually possible to allow for it when assessing that person's statements or conclusions, thus arriving at approximate exactness.