What this source contributes.
A photonic surface stayed 4.9 °C below ambient air temperature during the reported midday interval in direct sunlight. Reported temperature difference 4.9 ± 0.15 °C; Methods state ±0.15 °C sensor accuracy. This is not a confidence interval from independent rooftop replications. Limit: Cooling was measured, not water production. Condensation also needs the surface below the dew point and sufficient heat rejection during condensation.
main result and methods. Radiative balance, multilayer design, rooftop temperature results and Fig. 3; temperature-sensor and apparatus Methods. Raw data and independent sample hierarchy not audited. Energy-saving projections are outside this case. Review date: 2026-10-13. AI-assisted source check; not independent replication.
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Primary material consulted
This is a bounded reading note. It is not independent replication, a full systematic review or an endorsement of every conclusion in the paper.
Questions to take to the paper
- Is the upstream reference matched to the downstream transit time?
- Which uncertainty components are random, and which are bounded biases?
- What is independently prepared: a reading, a run or a day?
A simulation, chamber result, field observation and operational outcome answer different questions. Record the comparator, measured quantity and conditions before carrying a result into a design.
Bibliographic provenance
Verified 2026-10-13 against the original article and its publisher/repository record. Publication dates retain the precision supplied by the publisher. Metadata may reflect digital republication; it is not always the earliest historical publication date.