Itoero
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Posts posted by Itoero
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What's the experimental evidence for what happened after the big bang?
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The first spacecraft to collect Martian rocks for eventual return to Earth will explore Jezero crater, NASA announced on 19 November. Jezero is a 45-kilometre-wide crater that was once filled with water, where Martian life could have thrived.
“Getting samples from this unique area will revolutionize how we think about Mars and its ability to harbour life,” says Thomas Zurbuchen, NASA’s associate administrator for science, who chose Jezero over three other finalists.
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8 minutes ago, Strange said:
It depends, to some extent, on what is meant by "matter".
If you define "matter" as fermions (as opposed to bosons, the force carriers) then as far back as our physics can take us, there was always "matter".
But if you think of matter as atoms, then they didn't appear until much later when the universe has cooled enough for atoms to form.
There may be intermediate definitions and stages.
Matter is imo any substance that has mass and takes up space.
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On 25/11/2018 at 7:42 PM, beecee said:
matter came later as expansion continued with drops in temperatures and pressures and the superforce started to decouple.
Why do you think that?(evidence/citation)
Isn't the BB the evolution of the universe from 'small to big', unrelated to the forming of matter?
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The Paris Agreement promotes forest management as a pathway towards halting climate warming through the reduction of carbon dioxide (CO2) emissions. However, the climate benefits from carbon sequestration through forest management may be reinforced, counteracted or even offset by concurrent management-induced changes in surface albedo, land-surface roughness, emissions of biogenic volatile organic compounds, transpiration and sensible heat flux. Consequently, forest management could offset CO2 emissions without halting global temperature rise. It therefore remains to be confirmed whether commonly proposed sustainable European forest-management portfolios would comply with the Paris Agreement—that is, whether they can reduce the growth rate of atmospheric CO2, reduce the radiative imbalance at the top of the atmosphere, and neither increase the near-surface air temperature nor decrease precipitation by the end of the twenty-first century.https://www.nature.com/articles/s41586-018-0577-1
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Pakistan could "run dry" by 2025 as its water shortage is reaching an alarming level. The authorities remain negligent about the crisis that's posing a serious threat to the country's stability, reports Shah Meer Baloch.
According to a recent report by the International Monetary Fund (IMF), Pakistan ranks third in the world among countries facing acute water shortage.
https://www.dw.com/en/water-crisis-why-is-pakistan-running-dry/a-44110280
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A 3,500-kilogram mammal nicknamed the Siberian unicorn for the long horn that jutted from its forehead became extinct surprisingly recently.
Elasmotherium sibiricum, a rhinoceros that roamed the steppes of central Asia, was the last surviving member of its subfamily. To determine when the species became extinct — an event previously estimated to have occurred 200,000 years ago — researchers led by Adrian Lister at the Natural History Museum in London applied radiocarbon dating to the remains of 23 individuals. This revealed that the most recent specimens may have died only 35,000 years ago.https://www.nature.com/articles/d41586-018-07543-2
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It looks like hot water freezes faster then cold water.https://en.wikipedia.org/wiki/Mpemba_effect#Suggested_explanations
Is it possible that due to the heat, watermolecules have more energy to form the hydrogen bonds in ice?
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9 minutes ago, Strange said:
Citation needed.
Or should I ask a moderator to move this to Speculations so you are required to defend this nonsense?
For what do you need citation? That our atmosphere is filled with particles?
You are a moderator.
1 hour ago, Strange said:If you and the police car/radar gun or whatever are on the same stretch of road then the gravity is the same, yes. Moving at a constant speed won't change that.
Which gravity? The particles which enable sound (from police car) have also a gravitational attraction. When a police car drives, then the particles in front of him increase in concentration (which shortens waves) and the particles behind the car decrease in concentration.(which lengtens waves)
This is simple aerodynamics.
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Something else, our atmosphere is filled with particles, which enable sound. When you move through that, then the gravit. field is altered depending on your speed. Your speed changes the concentration of particles(which alters gravit. attraction) around you, which shortens or lengthens sound waves. This is what people call the doppler effect.
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On 23/11/2018 at 8:56 PM, Strange said:
Here is an explanation for children, with pictures: https://www.physicsclassroom.com/class/waves/Lesson-3/The-Doppler-Effect
If that is too advanced, I can try and find something simpler.
Is it so hard to understand that observing wavebehavior doesn't give info on how they change? In order to know what in the medium changes the wave, you need to observe/measure the path the wave travels which is difficult/impossible since when you measure/observe a wave, you stop the wave.
On 23/11/2018 at 8:56 PM, Strange said:Because it happens with constant gravity.
So motion = constant gravity….seriously?
Do you know about a gravit. field?
On 23/11/2018 at 9:33 PM, studiot said:There is such a phenomenon as the gravitational redshift that emerges from general relativity.
Yes, it means how motion changes gravitational field which causes the redshift. Why isn't gravitational shift what causes the observable doppler shift?
Motion alters gravitational field which lengthens or shortens waves
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2 hours ago, Enric said:
I can understand an Universe chaotic appeared by itself (a soup of matter for exemple), but not this one.
The complexity we observe now, evolved/developed because 'the soup of matter' which was in a sense present before the Big Bang, started to expand.
When 'the soup of matter' started to expand, the complexity we observe now slowly evolved/developed. Expanding of matter causes motion and motion causes interaction which causes complexity.
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34 minutes ago, MigL said:
you are assuming too much regarding superconduction/entanglement
I just wonder how it's related.
In a superconductor you get cooper pairs, when you add a magnetic impurity to the superconductor then you don't form cooper pairs but kondo entanglement which is a many body entanglement.
What can a magnetic impurity do at temperature close to 0K? I've read magnets misbehave at low temperature.https://physicsworld.com/a/magnet-misbehaves-near-absolute-zero/
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The Kondo effect implies how Kondo entanglement between electrons arises in a metal with an impurity, at a temperature close to 0 K.https://phys.org/news/2011-06-electrons-entangled.html#jCp https://www.nature.com/articles/ncomms12442
A 'pure' metal becomes a superconductor at a temp. close to 0K and forms cooper pairs and when you split up those pairs, you have entangled electrons.
Is it then correct to say that when you 'remove' resistivity in a conductor you enable (spin)correlation 'bonds' betweren electrons?
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Since it was not necessary religious scripture….maybe he carried a shopping list.
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On 14/11/2018 at 5:58 PM, Strange said:
Of course it does. It is trivially obvious. Anyone who can count can understand it.
I did learn how to count a couple days ago. But math doesn't 'prove' anything. The idea that only relative motion changes frequency need to be experimentally proven. The path the wave travels from its source need to be studied. How can people know the doppler effect is not due to gravitation?
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8 hours ago, Eise said:
feel the real Scotsman fallacy coming... Who defines who is Christian? You? Or do Christians define themselves as Christian?
Sorry, But I hate these kind of sweeping statements where you state what others should believe according the labels you use.
People that believe in the Christian god and Jesus+miracles are defined as Christian. All Christians believe in miracles concerning God/Jesus which go in against bio evolution.
I'm not stating what others should believe. Stop misinterprating me, react to what I actually say or don't react at all.
8 hours ago, Eise said:Fascinating. The article is amongst others about Christians who accept evolution.
Because people accept evolution that doesn't mean they accept all scientific evidence concerning evolution.
It's funny how many people(like you) can't deal with religion scientifically...your emotions take the upper hand.
Many forummembers must know I'm correct.
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What's the maximum velocity of electrons in a superconductor?
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C can't be exceeded because it can't.
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1 hour ago, coffeesippin said:
Not all scientists acknowledge all scientific evidence regardless of branch
You do know many scientists are Christian? Many scientists(from different religions) deny bio evolution.
https://en.wikipedia.org/wiki/Acceptance_of_evolution_by_religious_groups
https://en.wikipedia.org/wiki/Level_of_support_for_evolution
1 hour ago, coffeesippin said:how many Christians do you know personally
What does that matter? All Christians believe in the miracles about Jesus...
1 hour ago, coffeesippin said:"The projection begins with 2010 statistics when "Christianity was by far the world's largest religion, with an estimated 2.2 billion adherents, nearly a third (31%) of all 6.9 billion people on Earth. Islam was second, with 1.6 billion adherents, or 23% of the global population.”
relevance?
1 hour ago, coffeesippin said:aren't scientists still looking for the missing link
If you understand evolution then you would know there are in theory always 'missing links'. Have a look to this list, especially 'human evolution'. : https://en.wikipedia.org/wiki/List_of_transitional_fossils
1 hour ago, coffeesippin said:I can't see why biology has anything to do with religious faith.
Religious faith arises in your brain.
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For Christians it's impossible to acknowledge all scientific evidence concerning biological evolution.
Human 'history' is part of this biological evolution. All Christians believe in miracles that happened in biological evolution, the miracles go in against scientific evidence.
If someone says he believes in evolution then that doesn't mean he acknowledges all scientific evidence.
Religious faith and bio evolution are not in conflict because religious faith is an evolutionary trait.
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German songs I adore.
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Hot ice
in Experiments
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I bought several heat pads that contain sodium acetate trihydrate...to make hot ice.
But what form of 'stress' creates the ice?
Can I open such a small plastic pad with a scissors and pour it gently in a glass cup?