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Author | Topic: Coffee House Musing | |||||||||||||||||||||||||||||||||||||||||||
ringo Member (Idle past 664 days) Posts: 20940 From: frozen wasteland Joined: |
dwise1 writes:
My phone is a Samsung, so in a pinch I can use it as an immersion heater to make instant coffee. So you can drink your coffee only if you have a compatible phone?"I've been to Moose Jaw, now I can die." -- John Wing
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dwise1 Member Posts: 6076 Joined: Member Rating: 7.2
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My dance teacher friend (our relationship is mainly that I assisted her for about 14 years) has an iPhone. As a retired software engineer, Apple software just drives me crazy in how it keeps me from performing the most basic programmer tasks. Even the "Genius Bar" geniuses have told me that the most basic functionality that I need, being able to transfer individual files between my phone and computer (ie, PDFs or photos), was impossible with an iPhone. In addition, photos and videos of my grandsons (all the way across the country in Florida) are unnessecerily complicated because of incompatibilites between Apple and non-Apple devices. A classic example was when I had an AVI file from my camera of a dance routine we had done the week before and tried to display it for the class on a brand-new Mac. That brand-new Mac could not recognize that decade-old AVI file. "Not manufactured here." Well fuck you very much, Apple!
In our two European trips, my friend and I traded our photos afterwards. This second and last time (she died last year on Veterans' Day) she couldn't share her photos because her new iPhone had a proprietary photo format that was incompatible with everybody else. Well fuck you very much, Apple! My dance teacher friend keeps castigating me for not switching to Apple, but who would ever want to drink that Kool-Aid?
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jar Member (Idle past 91 days) Posts: 34140 From: Texas!! Joined: |
Fortunately the Budgie desktop can be made to look like an Apple desktop but you can still actually do stuff.
I've been known to build computers for some kids that can't afford them and they seem to like the Apple look so often I install the Ubuntu Budgie desktop. It has tools that will even handle most of the Appleized formats but that are also real world compatible.My Website: My Website
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dwise1 Member Posts: 6076 Joined: Member Rating: 7.2
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Apple was smart in their marketing, but it screwed a lot of kids up.
Apple donated a lot of Apple computers to schools. Generations of kids and teachers grew up with Apple computers. Every time we see anyone on TV using a computer, it's most likely an Apple computer or iPhone (in European productions, I saw a lot more Windows computer and phones in use). Then those kids went out into the real world economy and had to work with Windows computers because that's the route that business had taken. So just who the frak would ever want to make their device appear to be a fracking severely impaired Apple device? How do you edit a text file? How do you do a hex dump of a file? How do you do anything at all meaningful on an Apple device? You can't even right-click on a screen object. Absolutely useless!
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dwise1 Member Posts: 6076 Joined: Member Rating: 7.2 |
My phone is a Samsung, so in a pinch I can use it as an immersion heater to make instant coffee. I had a TNG tricorder app on my Palm Pilot. One of its built-in scanner settings was for heating up a microwave burrito. Unfortunately, my Palm Pilot didn't have the required hardware upgrades so I was never able to properly test that feature. For my coffee, I stay old-school and still use my Bialetti Moka Express.
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Tanypteryx Member Posts: 4597 From: Oregon, USA Joined: Member Rating: 9.8
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Today there were several articles in my SciTechDaily news feed about clever, innovative astronomical studies to refine the measurements of the expansion rate of the Universe, plus, is it uniform in every direction? And using gravity waves, specifically created by merging neutron stars, to tell us about all about these stars including the orientation of of the rotating pair.
Gravitational-Wave Scientists Brilliant New Method to Refine the Hubble Constant – The Expansion and Age of the Universequote: I think this was a pretty good article about this study with a lot of good background into the questions we are trying to ask about dark energy that might clues to which questions might increase our understanding of what is observable and how to do that.
Dark Energy Experiment 16 Years in the Making Could Illuminate Origin, Evolution, Fate of Universequote: Both these articles are fairly well written. Occasional articles in their list I would say the best part was the title. Some had whole paragraphs repeated in the same article, but every day I find good articles about studies and findings in the branches of science and technology that interest me. One thing I like about SciTechDaily is a nice list of references for every article. It's interesting reading while my imaging computer is processing thousands of images every day. A question just occurred to me, Do gravity waves have an effect like the electromagnetic red-shift from cosmic expansion? Another question, why is the speed of gravity the speed of light? Is it coincidence or is there an obvious link between gravity and light that I am overlooking?What if Eleanor Roosevelt had wings? -- Monty Python One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy The reason that we have the scientific method is because common sense isn't reliable. -- Taq
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AZPaul3 Member Posts: 8654 From: Phoenix Joined: Member Rating: 6.8
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Do gravity waves have an effect like the electromagnetic red-shift from cosmic expansion? Apparently, yes. Not to be confused with "gravitational redshift" where a photon expends energy to leave the gravity well. https://arxiv.org/pdf/1312.1862v2.pdf
Is it coincidence or is there an obvious link between gravity and light that I am overlooking? The tie in to Maxwell from Special Relativity shows the "speed of causality" in the equations. GR gives the same constraints on gravity wave propagation as does Maxwell show for EM. Edited by AZPaul3, : No reason given.Edited by AZPaul3, : No reason given. Eschew obfuscation. Habituate elucidation.
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jar Member (Idle past 91 days) Posts: 34140 From: Texas!! Joined: |
SN15 went up, down and is sound.
My Website: My Website
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AZPaul3 Member Posts: 8654 From: Phoenix Joined: Member Rating: 6.8 |
That's one in a row.
Eschew obfuscation. Habituate elucidation.
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Tanypteryx Member Posts: 4597 From: Oregon, USA Joined: Member Rating: 9.8 |
Do gravity waves have an effect like the electromagnetic red-shift from cosmic expansion?
Apparently, yes. Not to be confused with "gravitational redshift" where a photon expends energy to leave the gravity well. Is it coincidence or is there an obvious link between gravity and light that I am overlooking? The tie in to Maxwell from Special Relativity shows the "speed of causality" in the equations. GR gives the same constraints on gravity wave propagation as does Maxwell show for EM. Thanks, good answers! I'm anticipating the development of the field of gravitational wave astronomy that will open new views of the Universe the same ways that light, radio, X-ray, and Gamma-ray astronomy have. I can imagine the gravity data being used to create visible images of the Universe similar to the images created using various parts of the electromagnetic spectrum. I am disappointed that I will not live long enough to see it developed into a mature branch of astronomy.What if Eleanor Roosevelt had wings? -- Monty Python One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy The reason that we have the scientific method is because common sense isn't reliable. -- Taq
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Tanypteryx Member Posts: 4597 From: Oregon, USA Joined: Member Rating: 9.8
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One of the positive features of science, that is often unrealized by non-scientists, is the tradition and responsibility to train the next generations of aspiring scientists. This is not just giving students a sampling of the accumulated knowledge previously acquired by scientists in a specific field, but how to engage in science and apply the scientific method to understand observations.
What if Eleanor Roosevelt had wings? -- Monty Python One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy The reason that we have the scientific method is because common sense isn't reliable. -- Taq |
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Tanypteryx Member Posts: 4597 From: Oregon, USA Joined: Member Rating: 9.8 |
Today I read an interesting article on SciTechDaily and learned about a major global astronomy collaboration.
Mapping the Universe’s Earliest Structures and Dark Matter Distribution With COSMOS-Webb quote: I love that they describe it as a large patch of sky, but to us it seems like an awfully small patch of sky.
quote: This is so cool!!! They are looking at this patch of sky over the entire electromagnetic spectrum.
quote: They have some ingenious methods of mapping dark matter halos around galaxies.Some humans can achieve amazing things working together.
A question occurs to me that maybe Son Goku can answer or give us the leading hypothesis. Why doesn't dark matter clump together like regular matter does, in denser and denser clumps? I usually see dark matter described as more amorphous halos around galaxies. Is the repulsive force of dark energy acting more strongly on dark matter than normal matter?What if Eleanor Roosevelt had wings? -- Monty Python One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy The reason that we have the scientific method is because common sense isn't reliable. -- Taq
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AZPaul3 Member Posts: 8654 From: Phoenix Joined: Member Rating: 6.8
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A question occurs to me that maybe Son Goku can answer or give us the leading hypothesis. Before the big brains get here let me tackle these just to see if I’m generally right.
Why doesn't dark matter clump together like regular matter does, in denser and denser clumps? The major issue with dark matter is it appears to not respond to any electromagnetic force. EM is the force that causes matter to clump. No EM no clump. Since dark matter does not, as far as we can tell, respond to EM that means it cannot be seen, at any wavelength. Matter with no heat signature. No absorption or emission. Photons, apparently, just pass by or thru without any notice responding only to dark matter's gravitational field.
I usually see dark matter described as more amorphous halos around galaxies. Have you seen the Bullet Cluster - Wikipedia? We see two big lobes of gravity separated from their colliding galaxies. We know it’s there because of the gravitational lensing of objects in the background. Milky Way is hypothesized to be wrapped in a dark matter fog out to twice+ our visible stellar population.
Is the repulsive force of dark energy acting more strongly on dark matter than normal matter? Doesn’t appear so. Dark energy affects all of space equally. It’s progressive that way. Definitely not republican. Dark matter adds to the gravitational field overcoming the minor dark energy expansion in local space like galaxies and galaxy clusters but I haven’t heard of dark matter being affected by, or exhibiting, any properties or forces other than gravity. That's the rub. We can see "Dark Matter: The Gravity" but that's it. What it is? Right now we got nothing. Edited by AZPaul3, : No reason given.Eschew obfuscation. Habituate elucidation.
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LamarkNewAge Member Posts: 2497 Joined: |
It does not add any (or very much) space between near galaxies. An example is the space between Andromeda and our own Milky Way.
It adds a massive amount of space when there is just about nothing but matterless space. The question about Dark Matter ( not to be confused with Dark Energy, which I was just talking about) having the same weight against Dark Energy as Baryonic (regular) Matter reminded me of the total reboot that our textbooks underwent after the discovery of Dark Energy (1998). The assumption that the expansion of space was slowing down ( with all sorts of mathematical equations and formulas) was the subject of a big debate about whether Dark Matter + regular matter were slightly more or less mass/energy than a 100% "flat" universe. The unknown cause of the Big Bang and the equally unknown driver of the (ever ongoing) creation of space was truly an interesting "Dark" period, in science, that got a brightening new day when Dark Energy brought a new dawn. The old textbooks are fascinating to read but I am in awe of the true darkness that existed in science before the discovery of Dark Energy. Edited by LamarkNewAge, : No reason given.
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AZPaul3 Member Posts: 8654 From: Phoenix Joined: Member Rating: 6.8
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It does not add any (or very much) space between near galaxies. An example is the space between Andromeda and our own Milky Way. Of course it does and locally, like I said, the expansion is minor on galactic scales. You mentioned Andromedea. 2.5 Million LY of space between us. If I have my sums right the space between us and Andromedea is expanding at about 58 km/sec. Yet even with this increased distance the radial velocity of Andromeda's approach due to gravity is over 110 km/sec. Dark Energy is expanding all of space everywhere even within and between galaxies. But the local gravity field is enough to counter those tensions.
It adds a massive amount of space when there is just about nothing but matterless space. You want a mind blower? Even the space within an atom is expanding due to dark energy.
The old textbooks are fascinating to read but I am in awe of the true darkness that existed in science before the discovery of Dark Energy. What are you talking about? What darkness in science? That darkness started lifting 300 years ago and these last 100 years of science has been the brightest intellectual period of our species' history. Are you complaining that cosmologists didn't discover dark matter and dark energy before there was any evidence for them? Edited by AZPaul3, : No reason given.Eschew obfuscation. Habituate elucidation.
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