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TunnelRunner33
Location: Seattle Gender: Male Total Likes: 143 likes
| | | Re: Giant periscope; Seattle, WA < Reply # 2 on 8/28/2014 8:23 PM > | Reply with Quote
| | | Man, this is a weird one. I tried to do some Googling, but was unable to figure it out. I wonder if it might have been intended to bring natural light underground into some sort of facility or tunnel system. It seems too big and bulky to use in a situation where it would be expected to rotate and provide a 360 degree view. And my first thought, that it might have some sort of military application, seems less likely the more I think about it: you would think that it were used in that way, it would be more... precise, not just two big mirrors and a shaft, without some sort of optics or imaging magnification or whatever. Pretty interesting, anyway.
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| Freak
Location: Usually Alaska, now MSP. Gender: Male Total Likes: 269 likes
Hypocrite
| | | | Re: Giant periscope; Seattle, WA < Reply # 5 on 9/9/2014 1:59 PM > | Reply with Quote
| | | I can't shed any light on your particular periscope, but I know of a building in Minneapolis that has something sorta like that. The U of M's Civil & Mining Engineering building was built reeealy deep in the 1970s as an efficient earth-sheltered design. It has several levels of cut and cover basement, with the lowest levels mined out of the soft sandstone under the city. Full size drawing: https://lh4.google...o/s1600/img323.jpg The elevator actually goes in reverse, you enter the building at floor 1 and hit the button for floor 7 to go to the deepest level. It's so deep that the steam tunnels and sewers come in on floor 6. Here's an (off topic) video of us fucking around in one of the stairwells: https://www.youtub...atch?v=HQNUiCMoj1U Anyway, when constructing this experimental hippie-conscious save-the-whales building, they realized no one wanted their office 7 stories underground (even the mine engineering faculty ). To compensate, the bottommost hallways have "windows" at the ends with mirrors up a utility shaft to a periscope on the roof. There is also a fancy sun-tracking mirror array in a tower on the roof that is supposed to link up via fiber-optics to diffusers in the lowest levels, providing nice natural light... None of that has ever worked though, and the basement is totally depressing Crappy 1970s diagram: More info on the design: http://www.subsurf...thaLightTouch.html
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