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2. Fume hood - Wikipedia

   en.wikipedia.org/wiki/Fume_hood

   Air flow in fume hood demonstrated by dry ice fog. A fume hood is typically a large piece of equipment enclosing six sides of a work area (including a movable sash window or door), the bottom of which is most commonly located at a standing work height (at least 28 to 34 inches (71 to 86 cm) above the floor).

3. St Patrick's Purgatory - Wikipedia

   en.wikipedia.org/wiki/St_Patrick's_Purgatory

   St Patrick's Purgatory is an ancient pilgrimage site on Station Island in Lough Derg, County Donegal, Ireland. According to legend, the site dates from the fifth century, when Christ showed Saint Patrick a cave, sometimes referred to as a pit or a well , on Station Island that was an entrance to Purgatory . [ 2 ]

4. Raspberry Island Light - Wikipedia

   en.wikipedia.org/wiki/Raspberry_Island_Light

   Raspberry Island Light ; Location: Raspberry Island, Wisconsin: Coordinates: 1]: Tower; Foundation: Stone: Construction: Wood: Automated: 1947: Height: 43 feet (13 m): Shape: Square, attached white bldg. w/red roof: Markings: white w/black trim & lantern: Heritage: National Register of Historic Places contributing property : Light; First lit: 1862: Focal height: 77 feet (23 m) [2]: Lens: Fifth ...

5. Michigan Island Light - Wikipedia

   en.wikipedia.org/wiki/Michigan_Island_Light

   Location: Michigan Island, Wisconsin: Coordinates: 1]: Tower; Constructed: 1857: Foundation: Concrete: Construction: Steel: Automated: 1943: Height: 118 feet (36 m): Shape: White, Skeletal with a central column: Heritage: National Register of Historic Places contributing property : Light; First lit: 1869: Focal height: 170 feet (52 m): Lens: Third and half order Fresnel lens (original), 12 ...

6. Sand Island Light (Wisconsin) - Wikipedia

   en.wikipedia.org/wiki/Sand_Island_Light_(Wisconsin)

   Sand Island Light ; Location: Sand Island, Wisconsin: Coordinates: 1]: Tower; Foundation: Stone: Construction: Sandstone: Automated: 1921: Height: 42 feet (13 m): Shape: Octagonal: Heritage: National Register of Historic Places contributing property : Light; First lit: 1881: Focal height: 56 feet (17 m) [2]: Lens: Fourth order Fresnel lens (original), SeaLite LED Marine Lantern (current ...

7. Cana Island Light - Wikipedia

   en.wikipedia.org/wiki/Cana_Island_Light

   The light is approximately 85 feet (26 m) above water level, and has a visual range of 17 nautical miles (31 km; 20 mi). The stone foundation goes below ground 4 feet (1.2 m) and is set on bedrock. The tower is 4 feet 8 inches (1.42 m) thick at the base with the outer layer 24 inches (610 mm) thick with a 20-inch (510 mm) air space between it ...