mcastillo356's latest activity
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Over the last decade or so, computers have become the medium of choice in education. Those of us who were brought up with books often... -
mcastillo356 reacted to Bandersnatch's post in the thread Missing-links-in-galaxy-evolution with
Informative.
What's important here, I think, is that they're dusty. That is, they're already evolved, having experienced enough bouts of star... -
mcastillo356 reacted to Astronuc's post in the thread RIP Carl Grillmair, Caltech Astrophysicist (67) with
Sad.
Ref: https://www.foxla.com/news/caltech-scientist-carl-grillmair-suspect-freddy-snyder-charged It's unclear if Grillmair and Snyder had... -
mcastillo356 reacted to berkeman's post in the thread I still have mine; do you still have yours? with
Like.
Yep, but a different version: -
Not really. CERN is/was a just consideration since we may be travelling nearby. I'm sure we'll still get blasted by a neutrino or two...
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mcastillo356 replied to the thread Advice on visiting CERN?.Is there anything equivalent to CERN around you? Fermilab, in the USA, for example?I might be talking nonsense. 😒 Just for another trip.
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mcastillo356 reacted to Astronuc's post in the thread RIP Actor Robert Duvall (95, January 5, 1931 - February 15, 2026) with Sad.
https://www.wtaj.com/trending/actor-robert-duvall-dies-at-95-wife-announces/ I finally watched the movie Secondhand Lions, with Robert...
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mcastillo356 reacted to Ibix's post in the thread High School Is there anything in the Universe that is not fundamentally made up of matter? with Like.
I'm torn between a line about "doesn't matter" and quoting Neil Armstrong. 😁
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mcastillo356 reacted to DaveC426913's post in the thread High School Is there anything in the Universe that is not fundamentally made up of matter? with Informative.
While not definitive, one might make a good start by grouping all things into either fermions or bosons. Fermions obey the Pauli...
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mcastillo356 reacted to Hill's post in the thread High School Is there anything in the Universe that is not fundamentally made up of matter? with Informative.
According to this definition, gravity and EM radiation are not matter.
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mcastillo356 reacted to martinbn's post in the thread High School Is there anything in the Universe that is not fundamentally made up of matter? with Informative.
It depends on your definition of matter. If by matter you mean anything that can interact, then no, there isn't anything that isn't...
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mcastillo356 replied to the thread Advice on visiting CERN?.Yes, I think so.
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I appreciate the link but I'm just looking to visit for a single day and I'm not a researcher.
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mcastillo356 replied to the thread Advice on visiting CERN?.https://theory.cern/visitor-info As I see, there are several restrictions and conditions.
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mcastillo356 reacted to Steve4Physics's post in the thread Doppler effect: why do I find this exercise so difficult? with Like.
That’s a nice approach. A copy of the article can be found here: https://arxiv.org/pdf/2504.18159 Also, the equation...