Licht-im-Terrarium: Literaturdatenbank |
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| Resource type: Journal Article DOI: 10.1038/s41598-026-35389-6 BibTeX citation key: Barrett2026 View all bibliographic details |
Categories: Englisch = English Keywords: Farbsehen = Color Vision, Infrarot = Infrared Creators: Barrett, Jeffery Collection: Scientific Reports |
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Meine Sichtweise (Keine vollständige Zusammenfassung des Artikels! Meine Meinung muss nicht mit der Meinung der Autoren übereinstimmen! Bitte lesen Sie auch die Originalarbeit!)
Zusammenfassung
Einheitenfehler in Fig 5: Fig 5 zeigt gemessene Spektren und mutmaßlich daraus berechnete Lux und W/m² an 9 gleichmäßig verteilten Orten im 18 m x 9 m großen Raum. Lux liegt zwischen 590 und 1100, was realistisch klingt. W/m² liegt zwischen 2100 W/m² und 4000 W/m² was nicht realistisch ist (das Sonnenlicht hat nur 1000 W/m²). Wenn ich das Spektrum aus Fig 7 digitalisiere (visuell identisch zu Loc 9 aus Fig 5) berechne ich aus dem Spektrum 925 lx und 3.2 W/m² = 3200 mW/m² = 0,000 32 W/cm². In Fig 5 ist für Loc 9 920 lx und 3200 W/m² angegeben. Offensichtlich sind die Autoren hier mit der Einheit durcheinander gekommen (im Fließtext geben sie auch noch die Einheit W/cm² an, "This is shown in Fig. 5a and b. Here there is a plan of the space and measurements made at 9 locations of energy given in W/cm−2 and lux, which is a metric corrected for the human eye.") Added by: Sarina Last edited by: Sarina |
| Abstract |
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Life evolved under broad spectrum sunlight, from ultraviolet to infrared (300–2500 nm). This spectrally balanced light sculpted life’s physiology and metabolism. But modern lighting has recently become dominated by restricted spectrum light emitting diodes (350–650 nm LEDs). Absence of longer wavelengths in LEDs and their short wavelength dominance impacts physiology, undermining normal mitochondrial respiration that regulates metabolism, disease and ageing. Mitochondria are light sensitive. The 420–450 nm dominant in LEDs suppresses respiration while deep red/infrared (670–900 nm) increases respiration in aging and some diseases including in blood sugar regulation. Here we supplement LED light with broad spectrum lighting (400–1500 nm+) for 2 weeks and test colour contrast sensitivity. We show significant improvement in this metric that last for 2 months after the supplemental lighting is removed. Mitochondria communicate across the body with systemic impacts following regional light exposure. This likely involves shifting patterns of serum cytokine expression, raising the possibility of wider negative impacts of LEDs on human health particularly, in the elderly or in the clinical environment where individuals are debilitated. Changing the lighting in these environments could be a highly economic route to improved public health. Added by: Sarina |