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  #1721  
Old Posted Feb 12, 2015, 3:30 AM
Dball1 Dball1 is offline
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http://www.ringbell.co.uk/info/hdist.htm
Using this site World Trade Center has a 51 miles view and Comcast you can see 41 miles. Add these together and you get 92 miles. Of course this formula doesn't take into account objects in the way and hills. Also doesn't consider light refracting and air particles.

I would bet if you knew where to look with a telescope on a dry, clear day, you could see one another.
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  #1722  
Old Posted Feb 12, 2015, 4:36 AM
kingtut kingtut is offline
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There's a flaw in your logic here . Light can not bend around the curvature of the Earth . You can't add these lines of sight ,they bisect at some pt. above the earth. I think you would need pefect atmospheric conditions and height 3200 ft.

Last edited by kingtut; Feb 12, 2015 at 5:42 AM.
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  #1723  
Old Posted Feb 12, 2015, 4:48 AM
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kpdrummer82 kpdrummer82 is offline
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You definitely won't be able to see this from 1WTC but you might be able to see it from the top of Kingda Ka at Six Flags Great Adventure in Jackson, NJ. Apparently on a clear day you can see both NYC and Philly's skylines from the top, just gotta know where to look.
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  #1724  
Old Posted Feb 12, 2015, 5:00 AM
NickRivas NickRivas is offline
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Quote:
Originally Posted by kpdrummer82 View Post
You definitely won't be able to see this from 1WTC but you might be able to see it from the top of Kingda Ka at Six Flags Great Adventure in Jackson, NJ. Apparently on a clear day you can see both NYC and Philly's skylines from the top, just gotta know where to look.
Ha, I've been on that ride, and trust me...besides it being SUPER fast, you really don't get a chance to see anything for the second it's at its peak, heck you can barely even think, crazy ride.....if I could simply stand at the top then yeah sure haha
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  #1725  
Old Posted Feb 12, 2015, 7:48 PM
Mappy Mappy is offline
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Quote:
Originally Posted by Dball1 View Post
http://www.ringbell.co.uk/info/hdist.htm
Using this site World Trade Center has a 51 miles view and Comcast you can see 41 miles. Add these together and you get 92 miles. Of course this formula doesn't take into account objects in the way and hills. Also doesn't consider light refracting and air particles.

I would bet if you knew where to look with a telescope on a dry, clear day, you could see one another.
Yeah, this chart I was using before


Isnt that precise, and I dont know if I was using it properly...

But I think this diagram and formula is accurate, and is what that website uses that you mentioned.


So the equation is:

DBL = 3.57 x ( √hB + √ hL )

Ill use 276m for the highest point the public can get in CITC, and 541m is the tip of the WTC1 spire

which gives:

DBL = 3.57 x ( √276 + √ 541 )

DBL = 142km

... Which means that since they are only 129km apart, you could see the WTC1 spire with a telescope, or maybe just binoculars from the 4Seasons lobby/restaurant.
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  #1726  
Old Posted Feb 12, 2015, 8:06 PM
PhiLaw PhiLaw is offline
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Quote:
Originally Posted by Mappy View Post
Yeah, this chart I was using before


Isnt that precise, and I dont know if I was using it properly...

But I think this diagram and formula is accurate, and is what that website uses that you mentioned.


So the equation is:

DBL = 3.57 x ( √hB + √ hL )

Ill use 276m for the highest point the public can get in CITC, and 541m is the tip of the WTC1 spire

which gives:

DBL = 3.57 x ( √276 + √ 541 )

DBL = 142km

... Which means that since they are only 129km apart, you could see the WTC1 spire with a telescope, or maybe just binoculars from the 4Seasons lobby/restaurant.
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  #1727  
Old Posted Feb 12, 2015, 8:38 PM
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Would there not be any topographic features that got in the way? Staten Island is, in any case, quite hilly. Not sure about the rest of the line of sight all the way to Philly.
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  #1728  
Old Posted Feb 13, 2015, 1:19 PM
Plokoon11 Plokoon11 is offline
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I noticed a cement square pad next to the core by itself. Iwouldn't be surprised its for the tower crane.n
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  #1729  
Old Posted Feb 13, 2015, 2:33 PM
Mappy Mappy is offline
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Quote:
Originally Posted by gttx View Post
Would there not be any topographic features that got in the way? Staten Island is, in any case, quite hilly. Not sure about the rest of the line of sight all the way to Philly.
The main thing you'd nee to worry about is the mid-point between the two towers, around Plainsboro, NJ, and that area is 80-90 feet above sea level. It also has a lot of trees which could add another 30 feet of height obscurity.

Im not sure how exactly to factor that into the equation, but it might make it very close.
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  #1730  
Old Posted Feb 13, 2015, 4:10 PM
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Harley613 Harley613 is offline
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Quote:
Originally Posted by NickRivas View Post
Ha, I've been on that ride, and trust me...besides it being SUPER fast, you really don't get a chance to see anything for the second it's at its peak, heck you can barely even think, crazy ride.....if I could simply stand at the top then yeah sure haha
Agreed, I was too busy seeing my life flash before my eyes to analyse distant skylines :p
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  #1731  
Old Posted Feb 13, 2015, 5:14 PM
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summersm343 summersm343 is offline
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Update from yesterday

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  #1732  
Old Posted Feb 13, 2015, 5:23 PM
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And an update from Building Philly



https://www.facebook.com/BuildingPhilly
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  #1733  
Old Posted Feb 13, 2015, 6:33 PM
Baconboy007 Baconboy007 is offline
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Thanks for posting building pics. Those graphs and hyroglifics's were bringing me down.
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  #1734  
Old Posted Feb 13, 2015, 8:14 PM
apetrella802 apetrella802 is offline
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Last edited by apetrella802; Feb 13, 2015 at 8:19 PM. Reason: wrong URL posted
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  #1735  
Old Posted Feb 13, 2015, 8:15 PM
Dball1 Dball1 is offline
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Quote:
Originally Posted by kingtut View Post
There's a flaw in your logic here . Light can not bend around the curvature of the Earth . You can't add these lines of sight ,they bisect at some pt. above the earth. I think you would need pefect atmospheric conditions and height 3200 ft.
http://m.wtam.com/articles/wtam-loca...lake-11257314/

Light does bend. Particularly under the right atmospheric conditions. What is flawed is not taking into account that both objects are elevated. A 3200 foot object would work to see a ground level object in your example. But when using the distance calculator you can take the distance of both objects and add them together. Assumption is that you are mostly flat for points in between.
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  #1736  
Old Posted Feb 14, 2015, 7:47 PM
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williamphilapa williamphilapa is offline
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02.14.15 @ 12:17pm



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  #1737  
Old Posted Feb 14, 2015, 8:13 PM
Plokoon11 Plokoon11 is offline
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Thanks for the update! Looks like the last formwork will be setup this week for the other half of the core and then upwards! I'm a bit curious with what they are digging up on the otherside, the part that looks like a war trench.
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  #1738  
Old Posted Feb 15, 2015, 5:04 PM
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From yesterday... 4-5 trucks dumping concrete, and drilling, lots of guys working.

[IMG]Untitled by TallCoolOne2014, on Flickr[/IMG]
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  #1739  
Old Posted Feb 16, 2015, 12:50 AM
gfspeople gfspeople is offline
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Has anyone noticed that google maps still labels the CITC lot as the American Commerce Center?
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  #1740  
Old Posted Feb 17, 2015, 5:18 PM
Plokoon11 Plokoon11 is offline
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Looks like the crew is working in the snow today, man those brave souls especially the recent freezing temps.
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