d.com]
> Sent: Thursday, March 17, 2016 1:31 PM
> To: vortex-l@eskimo.com
> Subject: Re: [Vo]: EM Drive(s)
>
> In reply to Russ George's message of Thu, 17 Mar 2016 11:18:21 -0700:
> Hi,
> [snip]
> >In building a Shawyer EM Drive cavity copper is typically used but
, March 16, 2016 7:47 AM
> *To:* vortex-l@eskimo.com
> *Subject:* Re: [Vo]: EM Drive(s)
>
>
>
> Eric, my understanding of the Crookes radiometer is that it measures light
> intensity by the rotation of its vane, but the effect is NOT due to photon
> emission recoil, it is d
holds.
From: Bob Higgins [mailto:rj.bob.higg...@gmail.com]
Sent: Wednesday, March 16, 2016 7:47 AM
To: vortex-l@eskimo.com
Subject: Re: [Vo]: EM Drive(s)
Eric, my understanding of the Crookes radiometer is that it measures light
intensity by the rotation of its vane, but the effect is NOT
the vehicle than is converted from the mass depletion.
Dave
-Original Message-
From: Bob Higgins
To: vortex-l
Sent: Thu, Mar 17, 2016 4:38 pm
Subject: Re: [Vo]: EM Drive(s)
You can get about a 6% improvement in Q of the resonator by plating several
skin depths of Ag on top
I have not analyzed Shawyer's cavity design to understand what resonant
mode is responsible for his thrust, and what other resonant cavity modes
are supported by the cavity. The microwave oven magnetron can be pulled in
frequency somewhat by a highly coupled resonant mode. You want to make
sure t
In reply to Russ George's message of Thu, 17 Mar 2016 11:18:21 -0700:
Hi,
[snip]
>In building a Shawyer EM Drive cavity copper is typically used but Shawyer
>notes a higher Q would result with silver. Would a cavity that was made of
>copper sheet then electroplated with silver suffice to give th
You can get about a 6% improvement in Q of the resonator by plating several
skin depths of Ag on top of the Cu. This is frequently done to reduce
filter loss where the loss is dominated by metal losses. It is possible to
choose resonant cavity modes that have higher Q due to less coupling to the
: Thursday, March 17, 2016 1:31 PM
To: vortex-l@eskimo.com
Subject: Re: [Vo]: EM Drive(s)
In reply to Russ George's message of Thu, 17 Mar 2016 11:18:21 -0700:
Hi,
[snip]
>In building a Shawyer EM Drive cavity copper is typically used but Shawyer
notes a higher Q would result with silver. Would
On Wed, Mar 16, 2016 at 9:46 AM, Bob Higgins
wrote:
Eric, my understanding of the Crookes radiometer is that it measures light
> intensity by the rotation of its vane, but the effect is NOT due to photon
> emission recoil, it is due to the effects of the differential heating of
> the minute amoun
performing simple
copper;) naturally a far superior result would be expected with a silver EMCF
Drive!
From: Bob Higgins [mailto:rj.bob.higg...@gmail.com]
Sent: Wednesday, March 16, 2016 11:44 AM
To: vortex-l@eskimo.com
Subject: Re: [Vo]: EM Drive(s)
The problem with this is creating the
Here’s a rather recent academic paper on EM Drives
http://www.helsinki.fi/~aannila/arto/emdrive.pdf
From: David Roberson [mailto:dlrober...@aol.com]
Sent: Thursday, March 17, 2016 2:28 PM
To: vortex-l@eskimo.com
Subject: Re: [Vo]: EM Drive(s)
Does anyone recall how the force generated
Eric, my understanding of the Crookes radiometer is that it measures light
intensity by the rotation of its vane, but the effect is NOT due to photon
emission recoil, it is due to the effects of the differential heating of
the minute amount of gas present in the bulb. In a hard vacuum, this
radiom
is made of holds.
From: Bob Higgins [mailto:rj.bob.higg...@gmail.com]
Sent: Wednesday, March 16, 2016 7:47 AM
To: vortex-l@eskimo.com<mailto:vortex-l@eskimo.com>
Subject: Re: [Vo]: EM Drive(s)
Eric, my understanding of the Crookes radiometer is that it measures light
intensity by the rotat
of the
internal cavity antennae that emits the microwaves.
From: Bob Higgins [mailto:rj.bob.higg...@gmail.com]
Sent: Wednesday, March 16, 2016 11:44 AM
To: vortex-l@eskimo.com
Subject: Re: [Vo]: EM Drive(s)
The problem with this is creating the anisotropy in emissions from an induced
On Tue, Mar 15, 2016 at 11:47 AM, Bob Higgins
wrote:
My understanding, and I could be wrong, is that the thrust Shawyer
> calculates and measures from his devices is several orders of magnitude
> higher than what could be obtained from photon radiation recoil - even if
> all of the generated RF w
On Tue, Mar 15, 2016 at 12:21 PM, Russ George wrote:
Your understanding is correct, the thrust observed is far from that
> possible due to photon radiation recoil. That’s a bogus strawman lure cast
> up from under the bridge.
>
Please explain how a thought experiment is a strawman argument.
Eri
Your understanding is correct, the thrust observed is far from that possible
due to photon radiation recoil. That’s a bogus strawman lure cast up from under
the bridge. The higher Q = higher thrust prediction is long standing,
easily/readily testable, and presumably Shawyer and others have done
One advantage the EMDrive has over LENR, is that it's fairly replicable.
The amateurs can do it.
https://www.youtube.com/watch?v=Rbf7735o3hQ
Craig
From: Vibrator !
Ø So an EM drive in a lab cannot show an energy asymmetry because it can't
accelerate anywhere.
That does not add up logically or scientifically… Despite conflicting claims,
no one has yet “busted” all of the positive results, which are probably about
“chirality” more
There were one or two replication attempts on the NASA forums following the
most recent positive, albeit inconclusive, results. But unfortunately it
suffers from a similar problem as LENR in that few folks have the cahoneys
or resources to play with live magnetrons. This is lab science, not
deskt
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