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davenn's latest activity
davenn
posted the thread
M6.4, Eastern Banda Sea, Indonesia
in
Earth Sciences
.
Today's quake from my seismo here in Sydney, Australia M 6.4 - Banda Sea 2025-10-28 14:40:18 (UTC) 6.694°S 130.031°E 142.0 km depth
Yesterday, 9:22 PM
davenn
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BillTre's post
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Share Animal Pictures: For Animal Lovers
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Love
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Halloween:
Monday, 8:27 PM
davenn
reacted to
berkeman's post
in the thread
Share Animal Pictures: For Animal Lovers
with
Haha
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Monday, 8:27 PM
davenn
reacted to
Ibix's post
in the thread
I
Visible light Over Large Distances
with
Like
.
Light from stars is emitted as visible light and reaches us as visible light (ditto the other frequencies stars emit). No energy is lost...
Monday, 5:11 PM
davenn
reacted to
bruha's post
in the thread
Our Beautiful Universe - Photos and Videos
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Like
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Hello, I attach my last atempts, this saturday was clear moonless so I get out telescope after long time. Images are made with...
Monday, 4:31 PM
davenn
reacted to
collinsmark's post
in the thread
Our Beautiful Universe - Photos and Videos
with
Love
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The Jellyfish Nebula (a.k.a. IC 443, Sh 2-248) scooped up from my back patio, Feb. - Mar. 2025. The nebula is a supernova remnant found...
Monday, 4:31 PM
davenn
reacted to
collinsmark's post
in the thread
Our Beautiful Universe - Photos and Videos
with
Like
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For me it's pretty invaluable. There's a lot of "bang for the buck," once the initial setup/workflow is debugged and figured out. Again...
Monday, 4:30 PM
davenn
reacted to
collinsmark's post
in the thread
Our Beautiful Universe - Photos and Videos
with
Like
.
Here's an image I captured last Tuesday night [Edit: actually, Monday night/Tuesday morning], a little less than a week before...
Monday, 4:09 PM
davenn
reacted to
collinsmark's post
in the thread
Our Beautiful Universe - Photos and Videos
with
Like
.
Have you tried flat frame calibration? I'm a stickler for flats. Every deep sky image I've ever posted here I've processed with flat...
Monday, 4:09 PM
davenn
reacted to
sophiecentaur's post
in the thread
I
Paradox of Superconductivity
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.
If you measure a linear ramp then the source impedance must be designed to be constant current. No problem but one can't draw...
Sunday, 8:51 PM
davenn
reacted to
Dale's post
in the thread
I
Paradox of Superconductivity
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.
Agreed. You could design circuits with a superconducting component and a long time constant and you could design circuits with a...
Sunday, 8:51 PM
davenn
reacted to
berkeman's post
in the thread
I
Paradox of Superconductivity
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.
Why are you putting a resistor in series with a superconducting inductor? That kind of defeats the purpose, no?
Sunday, 8:16 PM
davenn
reacted to
Ibix's post
in the thread
B
'splain this hydrostatic paradox in tiny words
with
Informative
.
If you put the two clampstands on scales, the left one would show the "missing" weight. The walls of the vessels exert force on the...
Sunday, 7:24 PM
davenn
replied to the thread
Collection of Lame Jokes
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Sunday, 4:32 PM
davenn
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berkeman's post
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Collection of Lame Jokes
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Wow
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Sunday, 4:31 PM
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