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Findings—TEAM 3: Light and Wet |
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On Hypothesis #1 "A dome of
cooler more humid air is formed around the fountain in the center of the
Great Hall." |
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| Phase I HOBO RTs were strung over the fountain at the level of the first balcony (we made measurements with the fountain on and off). Kestrels measured temperature and humidity at grid points on the ground floor while the fountain was operating. | ||
| Phase II A The Raytek spot pyranometer measured the surface temperatures of the Great Hall's floor, patches of sunlight, the fountain's edge, and the water. | ||
 We found the surface temperature of the fountain and its masonry edge to be much cooler than the surrounding carpet and the sun patches. |
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| Phase II B The Kestrel detected a strong wind current at the edge of the fountain, which led to more detailed investigations. | ||
 Our fountain edge observations found the thermal winds to diminish rapidly as moved either vertically or horizontally. |
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 By actually wading into the fountain with the waterproof Kestrel, we found the thermal winds induced by the fountain to be strongest near the water surface. |
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On Hypothesis #2 "Daylighting
provides sufficient illumination in the Great Hall." |
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| Illuminance meters were used by a squad of recruits to perform an illumination sweep of the floor of the Great Hall under two lighting conditions—all the lamps on (which was the default condition) and daylighting only (which turned out to be unachievable; only about half of the lamps could be turned off!). | ||
 On left, all of the ceiling mounted HID lamps are on; on right only those that couldn’t be turned off are on. |
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 Lighting section taken just East of the central fountain. Blue curve represents all lights on plus daylight. Yellow curve represents some lights off plus daylight. Peak illumination is 121 and 94 footcandles, respectively. The measurements were taken on a sunny April day between 2 and 3 pm. |
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| Hypotheses | Findings | Conclusions |