EM-Drive

I'm 99.999+% sure it's just experimental error.

If it was real, it violates every known law of physics, including
conservation of energy and conservation of momentum, entropy everything.
The claimed operating principle, such as it is, makes no sense, and there's
critical errors in the maths underpinning the emdrive. It implicitly
assumes the existence of a single, special reference frame with different
physics, which is the same as the one they happened to run their equipment
in, and the maths fails in every other reference frame. Or if the special
reference frame is the initial one, you end up with perpetual motion.

But the experimental error is close to the limits of the test equipment in
every case except the chinese result, and the chinese test has not been
replicated, chances are they did something wrong.

Basically, they're making extraordinary claims, but extraordinary claims
require extraordinary evidence, and they don't have it, and there's very
good theoretical reasons to think they will never have it. I mean, it would
be wonderful to discover we live in a universe without conservation of
energy, my electricity bill would go down for one, but that's not the way
to bet.

On 12 August 2014 19:00, donray40@... [spacesettlers] <
spacesettlers@yahoogroups.com> wrote:

>
> Has anyone been following the development of this space propulsion
> system. It looks like it could be a game changer in low cost space
> transportation.Emdrive - Home
> [image: image]
> Emdrive - Home
> The EmDrive A New Concept in Spacecraft Propulsion Satellite Propulsion
> Research Ltd (SPR Ltd) a small UK based company, has demonstrated a
> remarkab...
> View on emdrive.com
> Preview by Yahoo
>
> Regards
>
> Don
>

--
-Ian Woollard

If it was real, it violates every known law of physics, including conservation of energy and conservation of momentum, entropy everything. The claimed operating principle, such as it is, makes no sense, and there's critical errors in the maths underpinning the emdrive. It implicitly assumes the existence of a single, special reference frame with different physics, which is the same as the one they happened to run their equipment in, and the maths fails in every other reference frame. Or if the special reference frame is the initial one, you end up with perpetual motion.
But the experimental error is close to the limits of the test equipment in every case except the chinese result, and the chinese test has not been replicated, chances are they did something wrong.
Basically, they're making extraordinary claims, but extraordinary claims require extraordinary evidence, and they don't have it, and there's very good theoretical reasons to think they will never have it. I mean, it would be wonderful to discover we live in a universe without conservation of energy, my electricity bill would go down for one, but that's not the way to bet.
On 12 August 2014 19:00,
donray40@...
[spacesettlers]
<
spacesettlers@yahoogroups.com
>
Has anyone been following the development of this space propulsion system. It looks like it could be a game changer in low cost space transportation.
Emdrive - Home
Emdrive - Home
The EmDrive A New Concept in Spacecraft Propulsion Satellite Propulsion Research Ltd (SPR Ltd) a small UK based company, has demonstrated a remarkab...
View on
emdrive.com
Preview by Yahoo

Regards
Don
-Ian Woollard