What is biophotonics?
Biophotonics is the study of light (photons) in biological systems. Living cells emit ultra-weak photons — too faint for normal vision but detectable by sensitive instruments. The function of this emission is debated; hypotheses include cellular signaling and coherence.
Key Findings
- •Ultra-weak photon emission — cells emit light in the visible range
- •Coherence — emission may be coherent under certain conditions
- •Stress correlation — emission patterns may change with stress/health
Why does Biophotonics matter?
Biophotonics matters because light-based methods are central to modern biology and medicine. Pulse oximeters, optical heart-rate sensors, fluorescence microscopy, and many laser and imaging techniques all rely on how light interacts with living tissue.
The field also includes a more speculative area: the very weak light emission from living cells, often called ultraweak photon emission. It is real and measurable, but evidence that cells use it to communicate or regulate the body is limited and remains debated.
How is Biophotonics measured?
Biophotonics is measured with instruments that detect how tissue absorbs, scatters, or emits light. Photoplethysmography shines light into skin and tracks changes in reflected light as blood volume pulses with each heartbeat. Pulse oximetry compares red and infrared absorption to estimate blood oxygen. Fluorescence and optical coherence imaging reveal tissue structure. Ultraweak photon emission requires highly sensitive photon counters in complete darkness, because the signal is extremely faint. Results depend strongly on skin tone, motion, temperature, and sensor placement, which is why optical measurements are calibrated and validated against reference methods.
In ONDA Life
Part 5 "Quantum Biology (Coherence)" borrows biophotonics as an image: "high coherence in the electromagnetic field of the cells" is ONDA's metaphor for presence. The idea that others can detect the body's coherent state is an unestablished claim; there is no evidence for it.