fényinformációját

Fényinformációja, a Hungarian term often translated as "the light information," refers to the information carried by or encoded in light. It covers classical information carried by optical signals as well as the information content that can be extracted from light in imaging, sensing, and communication. In a classical sense, light can encode data through variations in intensity, phase, frequency, and polarization, which are modulated to form optical communication channels. The information capacity of such channels depends on bandwidth, average power, noise, and detector characteristics, and is typically measured in bits per second.

In imaging and remote sensing, the light that reaches a detector contains information about a scene or object, including spatial structure and spectral properties. The study of how to extract, compress, and transmit this information is part of information theory and computational imaging. The term thus overlaps with radiometry, photometry, and signal processing.

In quantum information, light—especially photons—can carry quantum bits (qubits) encoded in polarization, path, or time-bin degrees of freedom. Quantum information protocols, such as quantum key distribution, exploit the properties of light to transmit information with security guarantees arising from quantum mechanics.

Measurement and quantification of light information involve detectors, spectrometers, and imaging sensors, which convert photons into electrical signals. The information content ultimately depends on the signal-to-noise ratio, sampling, and processing techniques. The phrase "fényinformációja" reflects an interdisciplinary area spanning optics, information theory, and data science, emphasizing how light carries, preserves, or reveals information about sources, scenes, or messages.