Re: Gravitomagnetism & Nano?


In article <122tg93n5ugaaeb@xxxxxxxxxxxxxxxxxx>, Max
<URL:mailto:mcomess@xxxxxxxxx> wrote:

Oscillating masses can also produce gravitational waves which could, in
theory, be used for propulsion. The problem is that in order to make
waves of reasonable strength, masses must be oscillated with incredibly
high frequencies (in the GHz or above), in a coherent way. This will be
a formidable technical problem.

Natural sources of GW's that are detectible in principle (none have yet
been detected) have masses on the order of several solar masses, but
the frequencies are in the 1-1000HZ range. Note that the power of a GW
scales as frequency raised to the *seventh* power, and they are
naturally extremely weak owing to the small coupling between gravity
and mass.

Do I understand you correctly as saying we need nanotech to build
superconducting masses that are then spun or oscillated, multiple
synchronised very exactly to ensure the output of gravity waves
is coherent, at as high frequency as we can manage, given safety
considerations?

Does it look as though the theoretical strength of nanotech-made
atomically-precise materials will permit building a machine which
will generate useful levels of gravity waves?

As I understand it no one has yet detected gravity waves, which
makes me a bit doubtful about the reliability of the current
theoretical basis for them.

--
Rory McLean
rory@xxxxxxxxxxxxxxxxxx


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