[ExI] Nanotubes in the news

[Keith Henson]

On Mon, Sep 20, 2010 at 5:00 AM,  John Grigg
<possiblepaths2050 at gmail.com> wrote:

> Considering these nanotubes materials are over 100 times stronger than
> steel, can we *finally* build a damn space elevator?  : )
>
> http://www.bloggingthesingularity.com/2010/09/18/behold-the-strength-of-carbon-nanotubes-health-tech-cnet-news/

"we estimate the maximum applied stress of the nanotubes in this study
to be 99 GPa"

The magic number for a non tapered space elevator cable for carbon
nanotubes is 63 GPa.  So, yes, if this can be done on the scale of
many millions of tons we could have an elevator.  Reasonably fast too
since you would want to make it a fast moving loop.

You still need to build a big ablation laser to clean up all the space
junk that would otherwise eventually run into the cable.

Keith Henson
>
>
> ------------------------------
>
> Message: 21
> Date: Mon, 20 Sep 2010 02:50:46 -0700
> From: John Grigg <possiblepaths2050 at gmail.com>
> To: ExI chat list <extropy-chat at lists.extropy.org>
> Cc: transfigurism <transfigurism at googlegroups.com>,     World
>        Transhumanist Association Discussion List
>        <wta-talk at transhumanism.org>,   SciFi_Discussion
>        <SciFi_Discussion at yahoogroups.com>
> Subject: [ExI] Book: The Hypomanic Edge
> Message-ID:
>        <AANLkTi=NAhMg0xzx5pJjB9rO5iB7sPMfKEO7eys85BiO at mail.gmail.com>
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>
> I wonder if twenty years from now, this will be a gene mod option for parents...
>
> http://www.hypomanicedge.com/
>
> John
>
>
> ------------------------------
>
> Message: 22
> Date: Mon, 20 Sep 2010 02:55:51 -0700
> From: John Grigg <possiblepaths2050 at gmail.com>
> To: ExI chat list <extropy-chat at lists.extropy.org>
> Cc: transfigurism <transfigurism at googlegroups.com>,     World
>        Transhumanist Association Discussion List
>        <wta-talk at transhumanism.org>,   SciFi_Discussion
>        <SciFi_Discussion at yahoogroups.com>
> Subject: [ExI] Fiber optic interface to link robotic limbs, human
>        brain
> Message-ID:
>        <AANLkTin89Pv1Qn7KTx+AgLMdKHwC-DLfQv+gAGB7Cj=m at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Cyborg technology continues along in exciting ways...
>
> "Lightning-fast connections between robotic limbs and the human brain
> may be within reach for injured soldiers and other amputees with the
> establishment of a multimillion-dollar research center led by SMU
> engineers"
>
> http://blog.smu.edu/research/2010/09/optical_interface_for_prosthet.html
>
> John
>
>
> ------------------------------
>
> Message: 23
> Date: Mon, 20 Sep 2010 03:02:05 -0700
> From: John Grigg <possiblepaths2050 at gmail.com>
> To: ExI chat list <extropy-chat at lists.extropy.org>
> Cc: transfigurism <transfigurism at googlegroups.com>,     World
>        Transhumanist Association Discussion List
>        <wta-talk at transhumanism.org>,   SciFi_Discussion
>        <SciFi_Discussion at yahoogroups.com>
> Subject: [ExI] Genes found that enhance academic performance
> Message-ID:
>        <AANLkTi=dweySZJqnDSt54pe3QsUOAmc9R9RoyZ-Y9rMC at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> This will eventually lead to the "honor student" gene mod package for
> parents who want academic achievers!  ; )
>
> http://www.theaustralian.com.au/news/nation/found-genes-that-make-kids-smart/story-e6frg6nf-1225926421510
>
> John
>
>
> ------------------------------
>
> Message: 24
> Date: Mon, 20 Sep 2010 03:16:40 -0700
> From: John Grigg <possiblepaths2050 at gmail.com>
> To: ExI chat list <extropy-chat at lists.extropy.org>
> Cc: transfigurism <transfigurism at googlegroups.com>,     World
>        Transhumanist Association Discussion List
>        <wta-talk at transhumanism.org>,   SciFi_Discussion
>        <SciFi_Discussion at yahoogroups.com>
> Subject: [ExI] Asimo's new artificial intelligence
> Message-ID:
>        <AANLkTikQ_x14t7sbM6EPa1a9U3kgyKO76FiOumsvuXy_ at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> A fascinating video.  I wonder where they will be in ten year's time?
>
> http://www.youtube.com/watch?v=P9ByGQGiVMg&feature=related
>
> John
>
>
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