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Paul Colby's latest activity
Paul Colby
replied to the thread
I
Linear generator prototype
.
I finally viewed the movie clip in post #15. It’s difficult to tell the magnet orientation from the video. I now understand and agree...
Tuesday, 8:11 PM
Paul Colby
reacted to
Baluncore's post
in the thread
I
Linear generator prototype
with
Like
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The actual pole pattern of the individual magnets is essential to this analysis and discussion. It would be helpful if the poles of the...
Tuesday, 7:48 PM
Paul Colby
replied to the thread
I
Linear generator prototype
.
For a normal bar magnet magnetized along its long dimension, yes. However, I suspect the north (or south) pole of the magnet shown in...
Tuesday, 5:36 PM
Paul Colby
replied to the thread
I
Linear generator prototype
.
Moving the magnet he has on the outside of the coil might also increase the voltage generated. Putting a magnetic metal core through the...
Tuesday, 12:54 PM
Paul Colby
replied to the thread
I
Linear generator prototype
.
The magnets of the type shown are common in both in variable reluctance motors and in linear motors. Invariably the magnetization vector...
Tuesday, 8:03 AM
Paul Colby
replied to the thread
Electromagnet magnetic field issue
.
Magnetic field lines are closed loops. The field generated (and the corresponding forces resulting) depend on the path reluctance of...
Oct 16, 2025
Paul Colby
reacted to
Baluncore's post
in the thread
I
How feasible is home radio astronomy?
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You are free to select your transform size. For one project, I was monitoring the background noise floor across the HF band from 1 MHz...
Oct 15, 2025
Paul Colby
replied to the thread
I
How feasible is home radio astronomy?
.
Well, being serious about doing science and being interested in learning how things work by doing them really aren’t the same. I had...
Oct 15, 2025
Paul Colby
replied to the thread
I
How feasible is home radio astronomy?
.
Before I get out a hacksaws and take multiple trips to the hardware store building an antenna, I thought I would first see if my Sdrplay...
Oct 14, 2025
Paul Colby
reacted to
DDTJRAC's post
in the thread
In the early days of electricity, they didn't have wall plugs
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Like
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Hello scientists, engineers, etc. I have not had any questions for you recently, so have not participated here. I was scanning some...
Oct 10, 2025
Paul Colby
reacted to
OmCheeto's post
in the thread
B
3I/ATLAS, Interstellar Comet
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I also ran across the discussion in the new persons thread. It got me interested in how long it would take the comet to travel...
Oct 10, 2025
Paul Colby
replied to the thread
I
How feasible is home radio astronomy?
.
Here’s a reference to some SDR evaluations...
Oct 10, 2025
Paul Colby
reacted to
Baluncore's post
in the thread
I
How feasible is home radio astronomy?
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Like
.
In the paper written by Jon Wallace (SARA), it appears, from the 24-hour records, that radio astronomy is being done. That system...
Oct 8, 2025
Paul Colby
replied to the thread
I
How feasible is home radio astronomy?
.
I'd prefer to have some assurances that any bumps measured actually came in through the antenna feed and not some random interference or...
Oct 8, 2025
Paul Colby
replied to the thread
I
How feasible is home radio astronomy?
.
Thanks. This will get a good read. Nice antenna design. I've dusted off my coaxial switch box which allows me to pragmatically switch...
Oct 8, 2025
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