wardialer
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Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 5:24 am

If I was in a space shuttle or even strapped onto a Delta 4 rocket...Would I see the curveture of the earth at 99,999 feet??? Would I start seeing the bluish-tinge or black atmosphere were you see it at the edge of space?

Also...is there like a chart that can tell me how high and what earth would like at 99,999 feet? I can always look at Google earth...but Im talking about temperatures at that altitude, how dark will it be in that altitude?
 
n8076u
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 5:43 am

From what I recall reading about the SR-71, they would start to see the "black" of space instead of blue somewhere lower than 99,999 feet, but I don't remember any exact number. You would also definitely see the curvature by a hundred-thou.

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SlamClick
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 6:15 am

Simple answer is of course.
You can see the curvature of the earth standing just 150' or so above the ocean. The horizon is very slightly but surely curved. From a mere 35000 or so it is rather obvious if you can see 90 degrees or so of arc. But that is not really the curvature of the earth. It is the area described by the limits of your vision as a function of the earth being curved below you.

Hold a basketball at arm's length and you can clearly see the curve of its edges. Now bring it up 'til it is half an inch or so from your eye. You can no longer see the 'horizon' but you can see a roughly circular area.

It depends on how you define the 'curvature' of the earth. The true curvature is the radius of the planet.

The radius is about 3448 nautical miles.
Distance to the horizon from 99,999' is about 389nm.

So from 45 degrees to the left of your nose to 45 degrees to the right of your nose is an arc of 90 degrees on a circle with a radius of 389nm. That is a distance along the circumference of your visual footprint of of about 611 miles. But this is not a true great circle, it is a small circle centered directly beneath you so the curve seen is almost an illusion.

I think I once did this calculation for 35000 feet and came up with the actual curvature being only 45 feet for the range I could actually see. Over the ocean you might perceive that, but over land the irregularity of the terrain swallows up such a small curve.
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 7:02 am

Quoting SlamClick (Reply 2):
You can see the curvature of the earth standing just 150' or so above the ocean. The horizon is very slightly but surely curved.

In fact, scientists in ancient Greece had already correctly calculated the size of the earth based on when a mast dissapeared over the horizon. This knowledge was then lost for a little while.
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timz
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 7:19 am

If you were standing in the middle of a perfectly level surface, at sea level, looking out at the visible horizon-- it would be a circle surrounding you, right? And a circle is inevitably curved.

So you have to figure out what you mean by "see the curvature". You could reasonably say you can't help seeing it.
 
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 10:22 am

Quoting Timz (Reply 4):
If you were standing in the middle of a perfectly level surface, at sea level, looking out at the visible horizon-- it would be a circle surrounding you, right? And a circle is inevitably curved.

So you have to figure out what you mean by "see the curvature". You could reasonably say you can't help seeing it.

If it were perfectly level you would only be hindered by haze. No horizon in the sense we are used to it. Similarly if you were on the inside of a Dyson sphere or a Niven Ring the horizon would be a haze with the ground curving up and over out of it.

In a hypothetical perfect vacuum there would be no haze. On a hypothetical infinitely large perfectly level surface you would see infinitely far. On the inside of a Dyson Sphere or Niven Ring you would simply see the ground curve up and over. At which point you would fall over backwards  Wink

[Edited 2006-07-21 03:29:34]

[Edited 2006-07-21 03:30:09]
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SlamClick
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 10:59 am

Quoting Starlionblue (Reply 5):
Niven Ring you would simply see the ground curve up and over. At which point you would fall over backwards

Sounds like someone has determined to walk to the base of the arch.
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vikkyvik
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:11 am

Quoting Starlionblue (Reply 5):
Similarly if you were on the inside of a Dyson sphere

Is a Dyson sphere that thing from the Star Trek TNG episode with Scotty?

Ahhh, Tech/Ops, we're all geeks here.

~Vik
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SlamClick
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:19 am

Quoting Vikkyvik (Reply 7):
Is a Dyson sphere that thing from the Star Trek TNG episode with Scotty?

Nope. Freeman Dyson (eminently Googleable) postulated an artificial planet, like a hollow pingpong ball with a star at its center and us living on the interior surface facing that star. No night. Protected from space hazards by the skin of the sphere. Can you imagine how much acreage such a thing would have compared with Earth? Say a radius of 93 million miles from our sun. Someone else can do the math.
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bhill
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:27 am

Ahh...but the Niven Ring gave you night...Wardialer, I hope you absorbed Slamclicks' Trig lesson..there will be a test...
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vikkyvik
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:31 am

Quoting SlamClick (Reply 8):

Nope. Freeman Dyson (eminently Googleable) postulated an artificial planet, like a hollow pingpong ball with a star at its center and us living on the interior surface facing that star. No night. Protected from space hazards by the skin of the sphere. Can you imagine how much acreage such a thing would have compared with Earth? Say a radius of 93 million miles from our sun. Someone else can do the math.

Hmmm. That indeed was the thing from Star Trek. Maybe a different episode though....

And here you go (for a sphere with radius 93 million miles, and infinitely thin skin):

69,559,385,250,000,000,000 acres, approximately rounded to the nearest significant digit, as I only know pi up to 3.141592654.

By the way, the phrase "eminently Googleable" has a nice ring to it. Could be signature material (with the author's permission of course )

~Vik

EDIT: Sorry, I should have been clear - I wasn't suggesting that Star Trek originated the idea of the Dyson sphere; I was just trying to figure out if that was what I remembered.

[Edited 2006-07-21 05:03:46]
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:58 am

Quoting Vikkyvik (Reply 10):

Hmmm. That indeed was the thing from Star Trek. Maybe a different episode though....

As SlamClick points out, it was used in a Star Trek TOS episode, but Dyson came up with it way before.


This is where I recommend "Ringworld" by Larry Niven. The quintessential Big Dumb Object story.
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 12:16 pm

Quoting Vikkyvik (Reply 10):
I only know pi up to 3.141592654.

You should learn the classic mnemonic:

How I want a drink, alcoholic of course, after the heavy lectures involving quantum mechanics.

=3.14159265358979
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 8:55 pm

Quoting Bobster2 (Reply 12):
Quoting Vikkyvik (Reply 10):
I only know pi up to 3.141592654.

You should learn the classic mnemonic:

How I want a drink, alcoholic of course, after the heavy lectures involving quantum mechanics.

=3.14159265358979

I'm gonna be the first to say "huh?". I'm not seeing it.
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vikkyvik
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 9:36 pm

Quoting Starlionblue (Reply 13):
I'm gonna be the first to say "huh?". I'm not seeing it.

The # of letters in each word  Wink

(took me a minute too)

~Vik
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 10:27 pm

Quoting Vikkyvik (Reply 14):
Quoting Starlionblue (Reply 13):
I'm gonna be the first to say "huh?". I'm not seeing it.

The # of letters in each word Wink

(took me a minute too)

~Vik

Thx Vik. I guess that works. But for anything important I'd still rather look it up  Wink


Pi fascinates me. Try to imagine pi being another value (say, 5.2). The universe would be completely different.

At the very end of Carl Sagan's "Contact" (the book, not the movie), there is a chapter called "The Artists's Signature". The last section has Ellie, still looking for the truth about the Universe, finding a long string of ones and zeros buried deep within pi. If you lay out these ones and zeros in a square raster in base 11, you get a circle. The interpretation is that the Universe was created, and deep within a physical constant there is a signature, or at least proof of creation.

Speculation, but still raises interesting questions about why the constants are as they are.
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vikkyvik
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 10:37 pm

Quoting Starlionblue (Reply 15):
The last section has Ellie, still looking for the truth about the Universe, finding a long string of ones and zeros buried deep within pi. If you lay out these ones and zeros in a square raster in base 11, you get a circle.

Is that actually true? If so, it's interesting. However, what is a square raster?

Quoting Starlionblue (Reply 15):
But for anything important I'd still rather look it up

Indeed, and for any calculation I'm doing, knowing pi to 10 digits is more than enough.

~Vik
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 10:51 pm

Quoting Vikkyvik (Reply 16):
Quoting Starlionblue (Reply 15):
The last section has Ellie, still looking for the truth about the Universe, finding a long string of ones and zeros buried deep within pi. If you lay out these ones and zeros in a square raster in base 11, you get a circle.

Is that actually true? If so, it's interesting. However, what is a square raster?

It is not true. It's a fictional construct. That is, it's a fictional series of numbers embedded in pi used by the author to illustrate a point about how a hypothetical creator could leave proof of creation, but only for races that have achieved a high level of technological prowess.

A square raster is in this case simply a layout of sequential numbers in a square. For example:

00000000000
00000100000
00001010000
00010001000
00100000100
01000000010
10000000001
01000000010
00100000100
00010001000
00001010000
00000100000
00000000000

As you can see, the ones form a pattern. In the book, the raster is much larger and the ones form a perfect circle, thus "closing the circle" on the number pi, which has a lot to do with circles.


I can highly recommend the book. Hard science and the search for truth about the universe without being boring or overbearing. The movie was enjoyable, but as usual it's hard to do a good novel justice in two hours on the screen.





And if you want ammo to bash morons who think science is baloney and prefer new age mumbo jumbo (I was kidnapped by aliens and they shoved a *** really far up my *** and since then I feel compelled to *** with farm animals) read this. Includes "Baloney Detection Kit".


[Edited 2006-07-21 15:58:31]

[Edited 2006-07-21 16:01:20]

[Edited 2006-07-21 16:02:24]
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SlamClick
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:10 pm

Quoting Vikkyvik (Reply 10):
Sorry, I should have been clear - I wasn't suggesting that Star Trek originated the idea of the Dyson sphere; I was just trying to figure out if that was what I remembered.

Ahh, then we can agree. And once again I discover that there is a Star Trek episode I have not seen. Never saw "Space Seed" until after I saw "The Wrath of Khan."

Quoting Vikkyvik (Reply 10):
By the way, the phrase "eminently Googleable" has a nice ring to it. Could be signature material (with the author's permission of course

Given, and with my complements.

Quoting Starlionblue (Reply 15):
If you lay out these ones and zeros in a square raster in base 11, you get a circle.

Well of course! Isn't that everyone's first response to a number string? Lay them out in a square raster in base 11? Heaven knows I do!

Of course I have not read this fictional story-accelerator in context. When I read the The DaVinci Code I kept being amazed by the intuitive leaps taken by a couple of people who hadn't slept in 24-48 hours.
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:26 pm

Quoting SlamClick (Reply 18):
Quoting Starlionblue (Reply 15):
If you lay out these ones and zeros in a square raster in base 11, you get a circle.

Well of course! Isn't that everyone's first response to a number string? Lay them out in a square raster in base 11? Heaven knows I do!

Yes well. Literary license and all that. The raster is not the focus of the novel at all but a sort of nice ending given the rest of it. The more crucial aspects are much better explained and fleshed out.

Quoting SlamClick (Reply 18):

Of course I have not read this fictional story-accelerator in context. When I read the The DaVinci Code I kept being amazed by the intuitive leaps taken by a couple of people who hadn't slept in 24-48 hours.

I found both "The Da Vinci Code of Doom" and "Angels and running around in Rome" very much like fast food. Immensely satisfying for a short while, but strangely not filling in the long run.

Quite honestly, I could name several authors who are more deserving of the title "literary genius" than Dan Brown. He is a only genius in that he has written the exact right novel for the market at the right time. If you read some interviews, you will note this was not a coincidence. He has said that he only read the classics until he tried out a commercial fiction novel (Sidney Sheldon's "The Doomsday Conspiracy"). He then decided that he could do that just as well as they could. Kudos to him for succeeding in a difficult game but it is a bit too targeted for me.

Yes, I am a snob

As for the authors who are more deserving. Highly subjective as always but here we go:
- Peter F. Hamilton.
- Neal Stephenson.
- William Gibson.

[Edited 2006-07-21 16:26:39]

[Edited 2006-07-21 16:32:56]

[Edited 2006-07-21 16:33:33]
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SlamClick
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RE: Curveture Of Earth @ 99,999 Feet?

Fri Jul 21, 2006 11:48 pm

Quoting Starlionblue (Reply 19):
I could name several authors who are more deserving of the title "literary genius" than Dan Brown.

And then there is Michael Crichton who worked his way through Harvard medical school by writing and selling novels in his spare time.

I wouldn't mind if the guy was human but honestly, if you wrote such a character in fiction the editors would never buy it.
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 12:01 am

Quoting SlamClick (Reply 20):
And then there is Michael Crichton who worked his way through Harvard medical school by writing and selling novels in his spare time.

I have a weird relationship with Michael Crichton's novels. I enjoy them but always wonder why. Since he is more of a "techie" writer I enjoy him much more than Brown. But his novels always have some things in common:
- Set within a few days. The chapter headings are even "Day 1", "Day2"...
- Filled with buzzwords that are obsolete a year after publication. It was fun to read "Congo" and "The Andromeda Strain" for the camp value alone.
- There's a cover-up at the end.
- There's a bibliography at the end.

It's as if he has a computer program to write them. "Insert buzzword here". Some people have said the same of Clancy. "Insert description of weapons system here".

Quoting SlamClick (Reply 20):
I wouldn't mind if the guy was human but honestly, if you wrote such a character in fiction the editors would never buy it.

I think he's descended from Klaatu in "The Day the Earth Stood Still". The physical similarities are striking. Big grin
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vikkyvik
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 12:12 am

Quoting Starlionblue (Reply 21):
I have a weird relationship with Michael Crichton's novels. I enjoy them but always wonder why. Since he is more of a "techie" writer I enjoy him much more than Brown. But his novels always have some things in common:
- Set within a few days. The chapter headings are even "Day 1", "Day2"...
- Filled with buzzwords that are obsolete a year after publication. It was fun to read "Congo" and "The Andromeda Strain" for the camp value alone.
- There's a cover-up at the end.
- There's a bibliography at the end.

Very true. I actually think his earlier/middle books were better than the more recent ones. Having read "Airframe", "Prey" and the newer one about eco-terrorism (can't remember the name), they strike me as both 1.) formulaic and 2.) somewhat sloppy (not in writing style, but in plot content, especially tying up loose ends).

Whereas, older books like "Jurassic Park" and "Terminal Man" I very much enjoyed.

Who knows, maybe he's just getting lazy. I probably would too.

~Vik
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timz
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 1:02 am

Quoting Starlionblue (Reply 5):
Quoting Timz (Reply 4):
If you were standing in the middle of a perfectly level surface, at sea level, looking out at the visible horizon-- it would be a circle surrounding you, right? And a circle is inevitably curved.

So you have to figure out what you mean by "see the curvature". You could reasonably say you can't help seeing it.

If it were perfectly level you would only be hindered by haze. No horizon in the sense we are used to it.

"If you were standing..." -- in other words, an actual person is looking at the horizon, with eye level 1.8 meters or whatever above the level surface. So the circular horizon is in plain sight.
 
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 1:16 am

Quoting Timz (Reply 23):

"If you were standing..." -- in other words, an actual person is looking at the horizon, with eye level 1.8 meters or whatever above the level surface. So the circular horizon is in plain sight.

Not if the surface is perfectly flat. There would be no horizon. The horizon we are used to is just an artifact of the shape of a spherical body.

As I said before, the only thing stopping you from seeing to infinity on a perfectly level surface is atmospheric haze. In a vacuum you would see infinitely far. Never mind the fact that a perfectly level, infinitely large surface in a perfect vacuum cannot exist in our universe.


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[Edited 2006-07-21 18:18:07]
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kdeg00
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 3:20 am

Quoting Bhill (Reply 9):
Ahh...but the Niven Ring gave you night...Wardialer, I hope you absorbed Slamclicks' Trig lesson..there will be a test...

But the Niven Ring only had night because of panels "floating" between the ring and the solar object. You could do that with a Dyson Sphere too, I assume, if you had the technology to build the sphere in the first place.
 
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 4:44 am

Quoting Starlionblue (Reply 11):
This is where I recommend "Ringworld" by Larry Niven.

Ah, it's been a while since I read that but it was a bit of an epic.

Quoting Vikkyvik (Reply 10):
I only know pi up to 3.141592654

You're trying to goad me into making a complete donkey of myself.  

Quoting Vikkyvik (Reply 16):
However, what is a square raster?

A contradiction in terms... unless I'm thinking of "Rasta".

[Edited 2006-07-21 21:45:19]
 
vikkyvik
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 5:01 am

Quoting David L (Reply 26):
You're trying to goad me into making a complete donkey of myself.

How's that?

Quoting David L (Reply 26):
A contradiction in terms... unless I'm thinking of "Rasta".

Oh lord, please tell me this wasn't a really really bad joke.

 Wink
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David L
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 5:26 am

Quoting Vikkyvik (Reply 27):
How's that?

Um... I have this, er, friend, see, who used to know pi to over 200 decimal places. Well, goodness me, is that the time..?

Quoting Vikkyvik (Reply 27):
Oh lord, please tell me this wasn't a really really bad joke.

Yes, sir. Sorry sir.  Smile
 
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 5:48 am

Quoting Kdeg00 (Reply 25):
Quoting Bhill (Reply 9):
Ahh...but the Niven Ring gave you night...Wardialer, I hope you absorbed Slamclicks' Trig lesson..there will be a test...

But the Niven Ring only had night because of panels "floating" between the ring and the solar object. You could do that with a Dyson Sphere too, I assume, if you had the technology to build the sphere in the first place.

The Dyson Sphere more or less requires gravity control unless you make it spin, at which point a lot of the surface area is wasted. Niven Rings gives you a lot of the benefits (and night with the shadow squares) without gravity control. The hitch is that the building material needs to have a tensile strength on the order of the strong atomic force. Also it's unstable unless you mount attitude jets on it.

Another interesting idea Niven had was to take a Niven Ring and use magnetic fields to manipulate the sun into a propulsion system. Use more magnetic fields to ram interstellar hydrogen into the center and presto, instant ramjet!

Big problem with Niven Rings and Dyson Spheres is racial survival. Since the world is artificial there are no natural resources such as fossil fuels AND escape velocity is ridiculously high. If you "forget" the technology that allows construction, you'll never be able to build the means to get off.
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timz
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 6:36 am

Quoting Starlionblue (Reply 24):
Quoting Timz (Reply 23):

"If you were standing..." -- in other words, an actual person is looking at the horizon, with eye level 1.8 meters or whatever above the level surface. So the circular horizon is in plain sight.

Not if the surface is perfectly flat. There would be no horizon.

You remember the difference between flat and level.
 
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 10:08 am

Quoting Timz (Reply 30):
Quoting Starlionblue (Reply 24):
Quoting Timz (Reply 23):

"If you were standing..." -- in other words, an actual person is looking at the horizon, with eye level 1.8 meters or whatever above the level surface. So the circular horizon is in plain sight.

Not if the surface is perfectly flat. There would be no horizon.

You remember the difference between flat and level.

Touche. Well played.
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bhill
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 1:13 pm

Pish Posh..screw Pi...try the j or i operator..And I was always taught the the root of a negative integer is undefined....Imaginary numba's anyone?


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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 10:57 pm

Quoting Starlionblue (Reply 29):
AND escape velocity is ridiculously high.

But in the sequel (I think) we learned that one exited out through the rim wall to docking stations on the outside and departed the ring away from the center - no energy at all required.

Quoting Starlionblue (Reply 29):
Another interesting idea Niven had . . .

The one I liked best was the one character who was the offspring of a pair of winners in a 'birth lottery' which had such high odds that it produced a subspecies of 'lucky' people.
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RE: Curveture Of Earth @ 99,999 Feet?

Sat Jul 22, 2006 11:04 pm

Quoting SlamClick (Reply 33):
Quoting Starlionblue (Reply 29):
AND escape velocity is ridiculously high.

But in the sequel (I think) we learned that one exited out through the rim wall to docking stations on the outside and departed the ring away from the center - no energy at all required.

Indeed. Although if you lose your technology level, either ascending the rim wall or getting throug it are beyond what you can handle.

Quoting SlamClick (Reply 33):
Quoting Starlionblue (Reply 29):
Another interesting idea Niven had . . .

The one I liked best was the one character who was the offspring of a pair of winners in a 'birth lottery' which had such high odds that it produced a subspecies of 'lucky' people.

Many would argue that Teela Brown wasn't really lucky. She did become a Protector after all.

This all makes me feel like going back and re-reading all the Known Space books.

If you feel like reliving that sense of wonder in a more modern Niven, try this.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
KDTWflyer
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RE: Curveture Of Earth @ 99,999 Feet?

Sun Jul 23, 2006 4:40 am

You can see dark skies from 70,000ft. Check out this post I did not too long ago.
Pics From A U-2 At Altitude (by Kdtwflyer Jun 27 2006 in Military Aviation & Space Flight)
NW B744 B742 B753 B752 A333 A332 A320 A319 DC10 DC9 ARJ CRJ S340
 
SlamClick
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RE: Curveture Of Earth @ 99,999 Feet?

Sun Jul 23, 2006 7:08 am

Quoting KDTWFlyer (Reply 35):
You can see dark skies from 70,000ft.

The movies never quite knew how to portray this. In The Right Stuff which was a visual feast, they showed it as if the familiar light blue sky was a layer they were passing up through. In reality is is just that the sky above gets darker with the thinning of the air.

There is a wonderful picture of the XB-70 in flight on the Edwards AFB site. The sky above it is rather dark and the underside is lit blue by earthshine. I love that picture and sometimes run it as wallpaper.
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Sun Jul 23, 2006 7:55 am

Quoting SlamClick (Reply 36):
There is a wonderful picture of the XB-70 in flight on the Edwards AFB site. The sky above it is rather dark and the underside is lit blue by earthshine. I love that picture and sometimes run it as wallpaper.

The NASA Dryden site right? I remember back in the Jurassic age of the Internet (the early 90s) downloading pics from there over dial-up. 5-6 minutes for a picture and forget about the high resolutions.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
SlamClick
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RE: Curveture Of Earth @ 99,999 Feet?

Sun Jul 23, 2006 11:58 pm

Quoting Starlionblue (Reply 37):
The NASA Dryden site right? I remember back in the Jurassic age of the Internet (the early 90s) downloading pics from there over dial-up. 5-6 minutes for a picture and forget about the high resolutions

That's the one. Hey my first modem had a pair of rubber cups where you would stick the telephone! Phones don't even look like that anymore. Do I remember 600 baud?

Anyway there are some really tasty pictures on that site. From their pictures I put together a montage of the pilots who broke Mach 1, (Yeager) 2, (Crossfield) 3, (Apt) and 4-5-6 (White) and thrown in for good measure are Iven Kincheloe, Marion Carl and Bill Bridgeman.

Hey, when the narrator in The Right Stuff says "...and nobody knew their names." I jumped up and said: "I did!"  Smile
Happiness is not seeing another trite Ste. Maarten photo all week long.
 
YYZYYT
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 5:47 am

Quoting Starlionblue (Reply 15):
Pi fascinates me. Try to imagine pi being another value (say, 5.2). The universe would be completely different.

I prefer the approach taken by the Indiana State Legislature in House Bill No. 246, 1897: it fixed the value of pi, by statue, at 3.2.

Now THAT would simplify a lot of engineering calculations, had not the state senate killed the bill.

(see:
http://www.agecon.purdue.edu/crd/Loc...0Level%20pages/indiana_pi_bill.htm )
 
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 6:27 am

Quoting YYZYYT (Reply 39):
Quoting Starlionblue (Reply 15):
Pi fascinates me. Try to imagine pi being another value (say, 5.2). The universe would be completely different.

I prefer the approach taken by the Indiana State Legislature in House Bill No. 246, 1897: it fixed the value of pi, by statue, at 3.2.

Now THAT would simplify a lot of engineering calculations, had not the state senate killed the bill.

Ironically, several values of pi could be inferred from the proposed legislation. So it wasn't even consistent. Luckily, a math professor was present at the deliverations to inject some sanity.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
bri2k1
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 6:56 am

Quoting YYZYYT (Reply 39):
fixed the value of pi, by statue, at 3.2.

They had a statue of pie???
Position and hold
 
David L
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 7:26 am

Quoting Bri2k1 (Reply 41):
They had a statue of pie???

Apple pie?

Well, you started it.  Smile
 
ReidYYZ
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 2:08 pm

Unrelated and oft disscused, the climb performance of the A343 with the hairdryers was atributed to the curveture of said earth. Sorry, could not resist. You may now begin the volley of shots across my bow.
 
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 9:09 pm

Quoting ReidYYZ (Reply 43):
Unrelated and oft disscused, the climb performance of the A343 with the hairdryers was atributed to the curveture of said earth. Sorry, could not resist. You may now begin the volley of shots across my bow.

Across the bow? I think we shall fire for effect.  Wink
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
vikkyvik
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 9:57 pm

Quoting ReidYYZ (Reply 43):
A343 with the hairdryers

Is there an A343 without the hairdryers?  Wink

Quoting Starlionblue (Reply 44):

Across the bow? I think we shall fire for effect.

"I said ACROSS her nose, not UP IT!"
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"He's an.........."

Name that movie.
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Starlionblue
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RE: Curveture Of Earth @ 99,999 Feet?

Wed Jul 26, 2006 10:40 pm

The Spaceballs of course
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fbgdavidson
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RE: Curveture Of Earth @ 99,999 Feet?

Thu Jul 27, 2006 11:11 pm

Quoting Wardialer (Thread starter):
Would I start seeing the bluish-tinge or black atmosphere were you see it at the edge of space?

Sure, even at 58,000ft the deep indigo was pretty clear. Sadly I didn't have the excellent equipment that the guy in the post below had and my point and shoot camera really didn't do it justice! However looking at the photos from the U2 and compared to what I saw just 12,000ft below I'd have thought at 99,000ft you are practically going to feel like you are in space.


MyAviation.net photo:
Click here for bigger photo!
Photo © Fraser Davidson



I understand the photo is pretty crap but when the window is the size of a passport and appears to be about three inches thick it is hard to get something decent!  Sad

Quoting KDTWFlyer (Reply 35):
You can see dark skies from 70,000ft. Check out this post I did not too long ago.

Pics From A U-2 At Altitude (by Kdtwflyer Jun 27 2006 in Military Aviation & Space Flight)

Absolutely jawdropping!  Wow!
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