Descriptor
| Behavior | 1 |
| Biofeedback | 1 |
| Biology | 1 |
| Electronic Equipment | 1 |
| Eye Movements | 1 |
| Eyes | 1 |
| Feedback | 1 |
| Optics | 1 |
| Physics | 1 |
| Pupillary Dilation | 1 |
| Science Activities | 1 |
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| Physics Education | 1 |
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| Pingnet, B. | 1 |
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| Reports - Descriptive | 1 |
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Peer reviewedPingnet, B.; And Others – Physics Education, 1988
Describes two demonstration experiments. Outlines a demonstration of the general principle of positive and negative feedback and the influence of time delays in feedback circuits. Elucidates the principle of negative feedback with a model of the iris of the eye. Emphasizes the importance of feedback in biological systems. (CW)
Descriptors: Behavior, Biofeedback, Biology, Electronic Equipment
