[opendtv] Re: Mag-lev

  • From: John Willkie <johnwillkie@xxxxxxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Mon, 6 Nov 2006 17:53:12 -0800 (GMT-08:00)

good rant, but you forgot the cumulative effect over 42 minutes of the 
reflected sonic booms.  Assuming that the first one doesn't derail the car ...

Sonic booms in a confined cylinder.  

John Willkie
-----Original Message-----
>From: flyback1 <flyback1@xxxxxxxxxxx>
>Sent: Nov 1, 2006 12:51 PM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [opendtv] Re: Mag-lev
>
>OK, all this theoretical stuff is just that. Theoretical.
>To quote Monty Python,
>"Stop That! It's Silly!"
>
>At 17,670 miles per hour the 'tube car' making a journey through the 
>center of the earth would need every life support system plus the 
>thermally protective ceramic tile outer surface the Space Shuttle has.
>
>It would also need the ability to physically withstand the very high 
>compression atmospheric pressure it would experience at that speed while 
>diving through a tunnel
>going through the center of the earth. This is not like flying through 
>the outer atmosphere to get to space, it's far more intense.
>
>Another problem is the fact that as the thing passes the '50 mile deep 
>point' in it's travel toward the center of the earth the mantle gives 
>way to the molton core.
>How are you going to build [much less run a tube car with human life 
>forms aboard through] a tunnel through the center of the earth that will 
>withstand the temperature and pressure of the molton core?
>If you can do that, I can think of a lot better, more productive and 
>business savy applications for THAT technology.
>
>One other point: I suspect the occupants of the 'tube car' would 
>resemble broiled lobster when they reach China or what ever destination 
>is deemed proper.
>
>If you want to propose something rational and useful, why not try to 
>find a way to multiplex ultrawideband communications signals with 
>natural gas running through buried pink plastic pipes running under all 
>the city streets in the country?
>
>
>John Shutt wrote:
>
>> http://www.damninteresting.com/?p=696#more-696
>>
>> 17,670 MPH
>>
>> And a trip from any point to any other point would be about 42 minutes 
>> regardless of the distance between endpoints.
>>
>> John
>>
>> ----- Original Message ----- From: "Bob Miller" <robmxa@xxxxxxxxx>
>> To: <opendtv@xxxxxxxxxxxxx>
>>
>>
>>> How is this. Free fall is the absence of any resistance or counter
>>> force to a body's obeying the laws of gravity.
>>>
>>> What speed would be reached as you pass the center? Anyone know? I don't
>>>
>>> Bob Miller
>>
>>
>>
>>
>
> 
> 
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