[ExI] Gravitational Waves Detected By LIGO!

[Giovanni Santostasi]

On what?

On Thu, Feb 11, 2016 at 2:04 PM, Tomaz Kristan <protokol2020 at gmail.com>
wrote:

> I was wrong. Simply wrong.
>
> On Thu, Feb 11, 2016 at 7:44 PM, Giovanni Santostasi <
> gsantostasi at gmail.com> wrote:
>
>> I think most of the energy though was channeled in to gravitational
>> waves. They would not be so deadly at long distances from the source.
>>
>> On Thu, Feb 11, 2016 at 1:39 PM, Giulio Prisco <giulio at gmail.com> wrote:
>>
>>> The energy that kills an entire galaxy would be released as hard gamma
>>> rays. "Hot enough to break nuclei at 50,000 light years" (Egan's Diaspora)
>>>
>>> On Feb 11, 2016, at 6:50 PM, spike <spike66 at att.net> wrote:
>>>
>>>
>>>
>>>
>>>
>>> *From:* extropy-chat [mailto:extropy-chat-bounces at lists.extropy.org
>>> <extropy-chat-bounces at lists.extropy.org>] *On Behalf Of *Anders Sandberg
>>> *…*
>>>
>>> >…If we assume the energy release was around 10^50 J over a second,
>>> then the power per square meter at distance d is 10^50/(4 pi r^2) Watts. So
>>> the criticial distance if the danger power is P is r=sqrt(10^50/4 pi P). If
>>> we assume a megawatt/m^2 is enough to cause biosphere damage, then the
>>> distance is 298,000 lightyears. To wipe out more advanced civilizations I
>>> would expect a much higher P; for a gigawatt the range is 9,400 lightyears
>>> - bad in the central part of a galaxy, but not even covering it…
>>>
>>>
>>>
>>> Anders, cool, but we need to know how GW energy would interact with
>>> matter before we conclude that it would nuke biomes.
>>>
>>> spike
>>>
>>>
>>>
>>> _______________________________________________
>>> extropy-chat mailing list
>>> extropy-chat at lists.extropy.org
>>> http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat
>>>
>>>
>>> _______________________________________________
>>> extropy-chat mailing list
>>> extropy-chat at lists.extropy.org
>>> http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat
>>>
>>>
>>
>> _______________________________________________
>> extropy-chat mailing list
>> extropy-chat at lists.extropy.org
>> http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat
>>
>>
>
>
> --
> https://protokol2020.wordpress.com/
>
> _______________________________________________
> extropy-chat mailing list
> extropy-chat at lists.extropy.org
> http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.extropy.org/pipermail/extropy-chat/attachments/20160211/dc00a07c/attachment.html>