Do room reflections come only from a localized source?

[noisewreck]

Yeah...but without the dilithium crystals....

Meh, I'll just load it up with meth

 

[SouthSIDE Glen]

Only if they put the SMSing women in a separate lane!

You misunderstand me, George. I don't want anyone else to have flying cars, just me!

BTW, you guys are so behind the time. No dilithium crystals needed - in fact that's a fictitious material. All you need to power a warp drive is a quantum singuarity. The hardest part about that is getting EPA certification .



G.

 

[NYMorningstar]

I've said it before, and I'll keep on saying it:

When I was growing up, they promised us flying cars by now. Where's my flying car??? I WANT MY FLYING CAR, DAMNIT!!!

G.

Here you go but it's going to cost ya:

http://www.terrafugia.com/

 

[SouthSIDE Glen]

Here you go but it's going to cost ya:

http://www.terrafugia.com/

Ugh. I think I'll wait for the 4-door.

...not to mention one that doesn't look like a reject from a Disney movie.



G.

 

[noisewreck]

You misunderstand me, George. I don't want anyone else to have flying cars, just me!

BTW, you guys are so behind the time. No dilithium crystals needed - in fact that's a fictitious material. All you need to power a warp drive is a quantum singuarity. The hardest part about that is getting EPA certification .



G.

Is that why they build the LHC at CERN?

 

[noisewreck]

Here you go but it's going to cost ya:

http://www.terrafugia.com/

OK, could they make it any fuglier?

 

[BrentDomann]

Glen, it's the reflection of waves off of differing layers of the atmosphere that made me ask the second question. (Although they're not sound waves, we bounce AM radio waves all over the place.) Good call!

And by the way, this here is the best flying toy:

http://www.inewidea.com/2007/07/27/1597.html

Here's the brocure:

http://www.moller.com/files/M200_Brochure.pdf

It hovers at like 10 feet, and it looks like a UFO. Just imagine if you were approaching an intersection and at about 200 feet away you see a UFO go across the intersection the other way up ahead. Haha, following traffic signals and all. You'd wet your pants!

I know I would. Hey, I just did!

 

[noisewreck]

You'd wet your pants!

I know I would. Hey, I just did!

Time for Depends?

 

[miroslav]

I've said it before, and I'll keep on saying it:

When I was growing up, they promised us flying cars by now. Where's my flying car??? I WANT MY FLYING CAR, DAMNIT!!!

G.

Well...there is that Orbitz...car....saucer....thing...whatever...
...but it sorta flies.

OK...so it's maybe only like 4' off the ground...but I think it's the only one of it's kind...
...so you WOULD be the only one with a flying car if you had it!

 

[SouthSIDE Glen]

Fans??? Gasoline powerd?? 10 feet off the ground?? How 19th century!

I was thinking maybe something more along the lines of a LifterCraft vehicle using an extremely high-voltage assymetrical capacitor array to use the Biefield-Brown effect for elevation and propulsion. That's what I would call way cool.

http://jnaudin.free.fr/lifters/main.htm

Geez, guys, all we need is to figure out how to create a voltage source that doesn't weigh a bazillion times more than the payload capacity of the resulting lift effect. How hard can that be? LOL.

G.

 

[miroslav]

Sounds to me like it has to be nuclear.

I think you need a Mr. Fusion.

 

[Joza]

Its funny how many people have so wrong ideas about air pressure, vacuum and such things.

Of course you can expand and contract and airtight room. The walls just must be elastic and quite strong. And no, they don't have to be infinitely strong.

A typical airballoon won't be enough, cause if you compress it, it will pop quite easily (when expanding it isnt elastic enough and it rips, and when compressing the pressure inside it gets too high and the thin rubber cant take it), but if it were thicker you would be able to compress/expand it a lot more.

Vacuum is a thing that has nothing inside, just empty space without air. There is absolutely nothing miraculous in it, though many people think so.

For the OP I have no answers.

 

[Chili]

Sounds to me like it has to be nuclear.

I think you need a Mr. Fusion.

Mr. Fusion... that's great because I'm sure that in 1985 plutonium is available in every corner drug store, but in 1955 it's a little hard to come by.

 

[miroslav]

Its funny how many people have so wrong ideas about air pressure, vacuum and such things.
A hard-walled conatainer would not be able to withstand too much....

Of course you can expand and contract and airtight room. The walls just must be elastic and quite strong. And no, they don't have to be infinitely strong.

The initial dicussion began with a *room*...as in a studio-type room.
They are usually NOT elastic.
A hard-walled container will not have much play...

But if we want to talk about a lab experiment with balloons....that's a different discussion. Though balloons will also pop at a given point...so the question is HOW MUCH expansion/contaction are we really talking about for this "sound in airthight container" experiment???
Expanding/contracting by a few inches isn't going have much effect on the sound inside...IMO...and I would think, to cover all the 20-to-20k sound waves, even if you started at the "midpoint" of the audible FS, that would be a rather LARGE amount of expansion/contraction needed to "include" the longest and shortes sound waves.

 

[miroslav]

Mr. Fusion... that's great because I'm sure that in 1985 plutonium is available in every corner drug store, but in 1955 it's a little hard to come by.

Wow...that's heavy Doc!

 

[Joza]

Yes thats true, I guess I was rather meaning other people than you. Sometimes you bump into very weird idea when brownsing science-themed forums and even in the university on firsts years. Some comments here just brought that to my mind.