the multiply-sign?
"the symbol (⋅), (×), or (∗) between two mathematical expressions, denoting multiplication of the second expression by the first."
"the symbol (⋅), (×), or (∗) between two mathematical expressions, denoting multiplication of the second expression by the first."
It's the latter, myleftear.
The first comma separates the millions and the second separates the thousands.
1,002,001 is 'one million two thousand one' or 'one million two thousand and one', as we say in the UK.
The first comma separates the millions and the second separates the thousands.
1,002,001 is 'one million two thousand one' or 'one million two thousand and one', as we say in the UK.
Since we have an international audience, the thousands separators in languages other than English are discussed here:
https://proofed.com/writing-tips/punctuation-tips-using-commas-in-numbers/
https://proofed.com/writing-tips/punctuation-tips-using-commas-in-numbers/
I wonder about you sometimes, Galu! Do Ye not know that you are allowed 30 minutes to edit before a subsequent post?
Not many people know this, but the UK has won more Nobel Prizes, per capita of population, than any other Country. 🙂
I have been continuing my UK researches into the best time to swim at Portsmouth, UK, Beach.
Low Tide, 9AM yesterday was a disaster. Awful rip-current that took me Eastwards. Seems to switch abruptly. A 20 minute margin calling for great precision.
Much more success with 3.5 Hours before Low Tide this morning.
Anywhoo, have been investigating the question of Supernovas, Kilonovas and Novas.
https://en.wikipedia.org/wiki/Kilonova
A matter of simple Elemental Chemistry, IMO. White Dwarfs accrete Matter from a nearby Red Giant Star. Bright explosions.
Excellent technical Chemistry book acquired today:
Dwarfs accrete
Picked it up for 50p at the local Marie Curie Cancer Nurses Charity Shop. A worthy cause.
Starts with discussion of of the Bohr Hydrogen Atom. A subject I cracked when 17. Moves onto Quantum Mechanics and Electron Spin.
Bit deeper... 🙁
My current opinion is the Universe is expanding EVERYWHERE. But in our local Virgo Cluster we have sufficient Mass to overcome it. 😀
Not many people know this, but the UK has won more Nobel Prizes, per capita of population, than any other Country. 🙂
I have been continuing my UK researches into the best time to swim at Portsmouth, UK, Beach.
Low Tide, 9AM yesterday was a disaster. Awful rip-current that took me Eastwards. Seems to switch abruptly. A 20 minute margin calling for great precision.
Much more success with 3.5 Hours before Low Tide this morning.
Anywhoo, have been investigating the question of Supernovas, Kilonovas and Novas.
https://en.wikipedia.org/wiki/Kilonova
A matter of simple Elemental Chemistry, IMO. White Dwarfs accrete Matter from a nearby Red Giant Star. Bright explosions.
Excellent technical Chemistry book acquired today:
Picked it up for 50p at the local Marie Curie Cancer Nurses Charity Shop. A worthy cause.
Starts with discussion of of the Bohr Hydrogen Atom. A subject I cracked when 17. Moves onto Quantum Mechanics and Electron Spin.
Bit deeper... 🙁
My current opinion is the Universe is expanding EVERYWHERE. But in our local Virgo Cluster we have sufficient Mass to overcome it. 😀
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Not "simple elemental chemistry" in the case of a kilonova, I would submit.
A neutron star merger creates heavy elements through the 'rapid neutron capture process', also known as the 'r-process'.
This is a process in which an atomic nucleus captures neutrons quickly enough to allow very heavy elements to be created.
The r-process also occurs in thermonuclear weapons, and was responsible for the initial discovery of the heavy elements einsteinium and fermium.
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Aha, so we are separating and interpunctuating the other way 'round: overhere, 1,001 is one and a thousandst... (What you are writing as 1.001) ;D
Now I'm confused! 😀
I read that the Switzerland is unusual in using a point (.) as a decimal separator and an apostrophe (') as a thousands separator, as in 1'000'000.00
Is that correct?
EDIT: I'm not confused regarding the 1,001 and 1.001 comparison - that I understand! 😎
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To be honest, yes, I‘d correctly have to write 1‘001… (i was focussing on thatt comma/period-detail instead)
comma or period, I‘m not even sure.
Sorry for that
comma or period, I‘m not even sure.
Sorry for that
No need to apologise, I was simply interested in the Swiss use of the apostrophe - I'd never come across that before!
Learning all the time! 🙂
Learning all the time! 🙂
The age of one of the record-breaking galaxies that appeared in the JWST's first images has been called into question.
Based on how red the galaxy CEERS-DSFG-1 appeared, the JWST astronomers placed it just 220 million years after the Big Bang.
However, it may be that this is a 'dusty galaxy' which is absorbing the bluer wavelengths of starlight while allowing redder wavelengths to pass.
That would place the galaxy at 1.3 billion years after the Big Bang. If so, it's still old and far away, but not to any record-breaking extent.
Based on how red the galaxy CEERS-DSFG-1 appeared, the JWST astronomers placed it just 220 million years after the Big Bang.
However, it may be that this is a 'dusty galaxy' which is absorbing the bluer wavelengths of starlight while allowing redder wavelengths to pass.
That would place the galaxy at 1.3 billion years after the Big Bang. If so, it's still old and far away, but not to any record-breaking extent.
Welcome back, Bonsai! The Magellan will be the world's largest multi-mirror telescope! 🤩
There will be seven mirror segments, and the size of the central segment alone can be appreciated by looking at the attachment.
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That looks a very good telescope! It's huge!
Presumably has less diffraction problems in terms of those octagonal spiky flares that the compromised James Webb has from the triangular detector support struts..
The simulated images look good.
Not operating in the infra-red presumably, so cosmic dust is less transparent.
These things usually go in the Atacama Desert in Chile. Thinner dryer air but still about 70% density and mostly clear skies. Not a problem for most people. Almost no light pollution.
https://en.wikipedia.org/wiki/Atacama_Desert
Presumably has less diffraction problems in terms of those octagonal spiky flares that the compromised James Webb has from the triangular detector support struts..
The simulated images look good.
Not operating in the infra-red presumably, so cosmic dust is less transparent.
These things usually go in the Atacama Desert in Chile. Thinner dryer air but still about 70% density and mostly clear skies. Not a problem for most people. Almost no light pollution.
https://en.wikipedia.org/wiki/Atacama_Desert
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