One of the mysteries of the English language finally explained.
(of an organism) tending to move away from light.
- ‘Homozygous ß3 mutant larvae were also photonegative, but hemizygous ß3 mutant larvae were photoneutral.’
- ‘Species commonly initiate strongly photonegative swimming when the intensity of light decreases, such as would occur when a predator passes overhead; the behavior is known as the ‘shadow response.’’
(of a substance) exhibiting a decrease in electrical conductivity under illumination.
- ‘This form of dielectric, in one aspect, is a photonegative paste.’
- ‘In this process, photonegative materials will be removed while photopositive materials remain in the final device.’
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