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.Scott's latest activity
.Scott
replied to the thread
I
With gravitational lensing, which way is down?
.
OK. It was there all along - but I am only applying enough thrust to balance out the direct gravitational effects of the lens (ie, the...
Jul 18, 2025
.Scott
replied to the thread
I
With gravitational lensing, which way is down?
.
@Dale regarding "almost": If it was directly behind the lens, I would get an Einstein ring. But for this scenario, I don't want an...
Jul 18, 2025
.Scott
posted the thread
I
With gravitational lensing, which way is down?
in
Special and General Relativity
.
Let me construct a scenario. My space craft is due south of a black hole - or other gravitational lens. But I have arranged my...
Jul 18, 2025
.Scott
replied to the thread
Life expectancy of a domestic PV system
.
The "claim" they have is probably just the right to maintain their solar panels. It's still my neighbor's roof - so he would still be...
Jul 18, 2025
.Scott
replied to the thread
Life expectancy of a domestic PV system
.
Beware of that "for free" installation. A few years ago I asked my neighbor about his roof solar panels. They had gotten dirty enough...
Jul 18, 2025
.Scott
replied to the thread
Big Ben In N Dimensions
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In 3D, the clocks are arranged on the surfaces of a square vertical cylinder. I would put my 4D Big Ben on a 4D globe with a 3D...
Jul 17, 2025
.Scott
replied to the thread
I
Quantum decoherence vs. measurement process
.
The detector may be large, but what is important is how much influence a measurement has on the state of the detection system. A...
Jul 15, 2025
.Scott
replied to the thread
How Does Flickering Light Influence Our Brain's Perception of Image Brightness?
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As I am sure you are aware, the NTSC objective was not perfection. It was to jam a color picture plus into a 6MHz band. It was a...
Jul 15, 2025
.Scott
posted the thread
On more exercise to burn calories
in
Biology and Medical
.
A recent article in the Proceedings of the National Academy of Sciences (PNAS) takes a close look at the role of Exercise on weight...
Jul 15, 2025
.Scott
replied to the thread
How Does Flickering Light Influence Our Brain's Perception of Image Brightness?
.
With CRTs there is a frame rate and a field rate. For progressive, they are the same. For interlaced, they are not. In your...
Jul 15, 2025
.Scott
reacted to
FactChecker's post
in the thread
Intersection of a circle and a sine curve
with
Like
.
It is only wrong if you assume the most trivial interpretation of the question. I would not do that. Suppose you interpret the question...
Jul 14, 2025
.Scott
replied to the thread
Intersection of a circle and a sine curve
.
First off, sorry for becoming unavailable. My follow-on hint would have been to try b=r-1, r>10. But regarding ambiguity - Here's how...
Jul 14, 2025
.Scott
reacted to
vcsharp2003's post
in the thread
Intersection of a circle and a sine curve
with
Like
.
If it's a straight line there would be many peaks of the sin wave that it would touch. If we take it further down so it is on the x-axis...
Jul 14, 2025
.Scott
replied to the thread
Intersection of a circle and a sine curve
.
I saw the answer at once without using any Math. I suggest drawing a picture using different size circles. If you are still stuck later...
Jul 12, 2025
.Scott
replied to the thread
I
Describe the Physics involved in swinging a rope to catch a cow
.
The Physics are not extraordinary, except that unlike other Physics problems, the rope does have mass. Here is a a shorter instructional...
Jun 29, 2025
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