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phyzguy's latest activity
phyzguy
replied to the thread
Fortran
Passing variables in FORTRAN
.
Is the OP still here? @Milleniumeye , can you comment on the suggestions you've received?
Today, 6:30 AM
phyzguy
reacted to
berkeman's post
in the thread
I
Neutrinos and theoretical necessity
with
Haha
.
Relax, it's a massless apostrophe. :wink:
Wednesday, 11:46 AM
phyzguy
replied to the thread
I
Neutrinos and theoretical necessity
.
Sorry to nitpick, but why the apostrophe?
Wednesday, 8:31 AM
phyzguy
replied to the thread
Fortran
Passing variables in FORTRAN
.
Have the first program write the variables to a file and the second program read the file.
Tuesday, 3:01 PM
phyzguy
replied to the thread
Keplerian Telescope and real image
.
Isn't there already a real image in the drawing you posted of the Keplerian telescope? Can't you just put the CCD there?
Sunday, 8:13 AM
phyzguy
replied to the thread
How to find Malaysia flight MH370?
.
Realize that over $200 million has already been spent searching for MH370 with no success. The points you raise above are interesting...
Apr 19, 2024
phyzguy
reacted to
Ibix's post
in the thread
I
How fast were distant galaxies moving?
with
Like
.
I think you are talking about the velocity of a galaxy relative to the local CMB rest frame. This will obviously vary as it interacts...
Apr 14, 2024
phyzguy
replied to the thread
I
An experiment against the second law of thermodynamics
.
The Wikipedia article linked by @Frabjous even has the exact circuit you proposed, and explains why it doesn't work.
Apr 13, 2024
phyzguy
reacted to
BvU's post
in the thread
Flashing light beacon from Earth reaching spaceship moving away at 0.75c
with
Like
.
What might help is a diagram (see Minkowski diagram) like this: (everything in seconds): Flash emitted at earth t=0 has ##x = ct##...
Apr 11, 2024
phyzguy
reacted to
Ibix's post
in the thread
B
New Paradox Discovered, I Think
with
Like
.
We see it two million years after it actually launched, yes. For ten minutes, yes. The trip takes two million years; the light arrives...
Mar 28, 2024
phyzguy
replied to the thread
B
Why isn't there an effort to name non-stellar celestial objects?
.
How about NGC-4755, aka Herschel's Jewel Box cluster.
Mar 19, 2024
phyzguy
replied to the thread
I
"Strange contradiction" that Maxwell found and resolved
.
The Feynman lectures also explain it quite well. Without the term that Maxwell added (called Maxwell's displacement current), the...
Mar 17, 2024
phyzguy
replied to the thread
B
How Fast Do Different Atoms Vibrate?
.
Maybe you could start at the link below. As @Ibix said, wherever you read about "cesium atoms, which vibrate 9.2 billion times every...
Mar 17, 2024
phyzguy
replied to the thread
How did Cavendish find the density of the Earth?
.
@mfb. I don't see why you are saying that he didn't measure G explicitly. He measured the force between his large lead balls and the...
Mar 16, 2024
phyzguy
reacted to
berkeman's post
in the thread
Counting of Integrated Circuits by photo or video
with
Like
.
Welcome to PF. Can you post a few representative photos? Use the "Attach files" link below the Edit window to upload the images. Have...
Mar 16, 2024
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