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Scientists use quantum device to slow chemical process by factor of 100B

sydney.edu.au

21–30 of 94 posts

Re: Scientists use quantum device to slow chemical process by factor of 100B

#23
post #20

I was reading a book hoping to work out how to derive E=mc2. My idea was to go from being about 400 years behind science to merely being 100 years behind. This sort of reporting makes me realise those 100 years are not linear. I had to go check that this was real - https://www.nature.com/articles/s41557-023-01300-3 , because it could have as easily been a marketing site for the next Marvel movie for all I could groun…

This is really a bad idea to study anything. Actually this is what sets aside naïve hobbyist interested in Physics vs someone studying Physics systematically and efficiently as part of PhD program. I did this mistake repeatedly. I started with annotated version of Newton's Principia, spent about a year just pulling my hair and gave up to realize how much time I had lost in all kind of minutia, noise and random things…

There's a related idea, which is that there's no reason that the first person to discover something will happen to find the best way to teach it. In fact there are many reasons for that not to be the case: their own understanding is nestled in a complex web of adjacent trivia, some of which is critical but they don't realise it, and some of which is unrelated but seems vital to them.

Re: Scientists use quantum device to slow chemical process by factor of 100B

#24
post #20

I was reading a book hoping to work out how to derive E=mc2. My idea was to go from being about 400 years behind science to merely being 100 years behind. This sort of reporting makes me realise those 100 years are not linear. I had to go check that this was real - https://www.nature.com/articles/s41557-023-01300-3 , because it could have as easily been a marketing site for the next Marvel movie for all I could groun…

This is really a bad idea to study anything. Actually this is what sets aside naïve hobbyist interested in Physics vs someone studying Physics systematically and efficiently as part of PhD program. I did this mistake repeatedly. I started with annotated version of Newton's Principia, spent about a year just pulling my hair and gave up to realize how much time I had lost in all kind of minutia, noise and random things…

On the other hand, some of Darwin's original treatise - Origin of species of species in particular, is well worth a read.

Re: Scientists use quantum device to slow chemical process by factor of 100B

#27
post #10

Earlier quoted context omitted.

That sounds awfully like an analogue simulation.

Not an expert, but what I'm understanding is this: With a regular simulation, whether analogue or digital, you create a mathematical model, and evaluate that model in some way to get a result, which hopefully matches the actual phenomena in whatever it is you were trying to simulate. Here, it's more like instead of measuring the phenomena, they instead measured something that is physically related to that phenomena.…

Like a scale model aircraft in a wind tunnel?

Re: Scientists use quantum device to slow chemical process by factor of 100B

#28
post #10

Earlier quoted context omitted.

That sounds awfully like an analogue simulation.

Sounds like a semantics debate about the meaning of the word "simulation".

No. An analogue system is not a simulation. A simulation is some approximation - a model - of a physical system that you compute with some finite precision.

An analogue is a physical entity with the same physics as some other thing.

A straightforward engineering example would be scale model of an airplane in a wind-tunnel.

Re: Scientists use quantum device to slow chemical process by factor of 100B

#29
post #21

What does this mean? Can you slow down time? I would assume you must also slow down physics in order to slow down chemistry. No?

They're using an analogous system. The speed of the process in the analog does not have to be the same as in the original system, in terms of wall-clock time.

Re: Scientists use quantum device to slow chemical process by factor of 100B

#30

Earlier quoted context omitted.

Not an expert, but what I'm understanding is this: With a regular simulation, whether analogue or digital, you create a mathematical model, and evaluate that model in some way to get a result, which hopefully matches the actual phenomena in whatever it is you were trying to simulate. Here, it's more like instead of measuring the phenomena, they instead measured something that is physically related to that phenomena.…

Like a scale model aircraft in a wind tunnel?

Like a scale model aircraft in a tunnel, with a fluid that behaves like air, but just enough it can flow slower. Before FEA and CFD, people did a lot of work with miniatures. I remember simulating a long metal rod for an oil rig that was a plastic pipe filled with liquid mercury so that it'd flex the same way the kilometer-long metal rod would.
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