Recent content by Aidyan

As I understand it, the energy-time uncertainty relation \triangle E \triangle t \geq \hbar /2 expresses a trade-off between the precision with which energy and time can be simultaneously measured. I understand that, unlike position and momentum, time is not an operator, so the relation is not...

Well, I'm not an expert, but the reason I would like to integrate back in time is precisely because I would like to check how accurately the solution returns to the initial conditions. That would suggest something on how the integration forward in time is correct (does it?) Say one finds a...

I'm wondering whether a differential equation that can be integrated numerically forwards in time can also be integrated backwards in time starting from the final state and inverting the momenta/velocities? I tried and it didn't work. But I'm not sure whether I'm making a mistake with my solver...

It was in a personal conversation. Nothing that can be referenced or linked. I only want to know whether the above definition is internally consistent or not.

Knowledgeable people. But I guess they didn't get the point I was trying to make. I will stick to the above definition.

That was my point too with those who doubted my exposition. I don't see any reason to dwell into non-frequentist formalism and/or interpretations if we simply want to discuss the statistics, say, of the photon distribution on a detection screen in a double slit experiment, the measurement...

Of course. But the discussion is set in a purely experimental context that discusses measurement outcomes only. Say, on how to define a discrete probability distribution for the interference fringes at a detection screen of the double slit experiment without necessarily recapitulating all the...

In a line of reasoning that involves measurement outcomes in quantum mechanics, such as spins, photons hitting a detection screen (with discrete positions, like in a CCD), atomic decays (like in a Geiger detector counting at discrete time intervals, etc.), I would like to define rigorously the...

A water molecule is as tiny as 0.3 Angstrom. I would expect that quantum effects play a role. I'm wondering if its Brownian motion in a fluid is determined only by classical thermodynamics or if its collisional processes must take into account also quantum scatterings or other effects like...

I'm trying to understand the Schram plot, which is the graph of wiki here: https://en.wikipedia.org/wiki/Cosmological_lithium_problem I do not understand why the yellow box (the observed light element abundance) for H3/H (red stripe) is absent? Is there any reason for this?

That was my question (read to the end). If there is historical research that highlights if and when it was more or less in fashion? From my interaction with scientists, especially when it comes to issues of philosophical nature, nowadays, they tend to resort much more frequently than in the past...

When I went to college, more than 30 years ago, as far as I can remember, nobody was talking about the use of Occam's razor in science. Reading the works of past scientists, I rarely see them invoking principles of parsimony, let alone cite Occam's razor. Yes, Newton, Einstein, and few others...

Is the International Journal of Cosmology, Astronomy and Astrophysics (IJCAA) (https://madridge.org/journal-of-cosmology-astronomy-and-astrophysics) a respectable journal? I received from them an invitation, and it looks like a journal that could fit for something I would like to publish...

Synthetic biology is a rapidly growing field of science that aims at redesigning organisms for medical and agricultural applications, by means of biotechnology, genetic engineering, molecular biology and other methods by chemical, biological or computer engineering. As far as I understand it...

Ok. So, the concept of "species" is a very questionable one that has not a scientific and clear-cut correspondence in the real living world. But then why are we making the distinction between homo sapiens and home Neanderthalensis in the first place? It is said that "compared with modern...