Soccer: „The modern ball takes a different flight path.”

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What can make you change your mind in your professional life?

1. While you are working on a project 2. Before you start a new project 3. Have there been important strategic shifts in your professional life? 4. Do you have the impression that you change your...

07 August 2014 7,241 13 View

Is it a coincidence when we meet the right people in our lives?

Have you ever met persons who were particularly important for you at a special moment or situation of your private or professional life? I am not thinking of magical circumstances but of something...

06 July 2014 2,979 37 View

In a brain scan, what can be uncovered by the interpretations and what cannot?

Can the decoding of the details reveal something about our shared world? Assumed the brain scan would be reliable and decoded so that it tells us that the test person is thinking of the sentence...

06 July 2014 6,838 54 View

Is our talk of facts redundant? – Do we need facts in addition to causes?

The British logician Peter Geach wrote that “facts” found their way into literature by the end of the 19th century via the fashion journal “Strand Magazine”. In former times one could do without...

04 May 2014 3,820 15 View

Social media: Downvoting and degrading in social networks – What are the reasons? - What are the reactions?

We have recently seen a lot of down-votings in some threads. We also saw different kinds of reactions on this phenomenon. I would like to ask a question about these reactions. First I assume that...

04 May 2014 5,037 88 View

Non-payment culture – will it shrink the economy?

Jaron Lanier, in his new book “Who owns the future?” (2013) proposes the thesis, that the non-payment culture of free information and reduced transaction costs provided by the internet will shrink...

04 May 2014 9,355 18 View

Can we learn from our own imagination? Can someone move a slide rule in the head and get new results?

There are anecdotes about people with a special talent who can move a slide rule (a slipstick) in their head and get a result which they had not had before. I doubt this for a number of...

02 March 2014 4,242 39 View

Are there infinitely many possible sentences in a natural language?

Most authors seem to think so. Frege, one of the few mathematicians who worked on that problem spoke of “unpredictably many” (or uncalculably many; “unabsehbar viele”) - not an infinite number of...

01 February 2014 10,153 99 View

What is the difference between mathematical R^4 space and physical 4D unit space?

We assume that the difference is huge and that it is not possible to compare the two spaces. The R^4 mathematical space considers time as an external controller and the space itself is immobile in...

10 August 2024 6,678 14 View

Is it true that $\det(V(A))$ may be only $\pm 1$, depending on $n$, for the last symmetric tridiagonal matrix $A$?

One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...

08 August 2024 6,690 1 View

1. If I can quantize the atom using this hyperbolic spiral and classical physics, could nature do the same?

If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...

07 August 2024 5,343 2 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

Help us with Italian and Sicilian flora and become our co-author ?

I am looking for an expert on the flora of central and southern Italy and Sicily. I am offering co-authorship of a monograph on a historic herbarium kept in Poland. We have 300 high resolution...

01 August 2024 6,771 2 View

How to Import Blade geometry from CAD file in ANSYS design modeler?

Hello. I have the geometry of a blade in CAD file (stp) and I want to prepare the blade for meshing with turboGrid. I must import this file into designModeler and then transfer to the...

27 July 2024 356 3 View

How can I use DFT-D3 correction ( Siesta version 5.0.1)?

Dear Siesta Users, I installed Siesta 5.0.1 and I want to use Grimme's D3 correction. According to the 5.0.1 manual, I could use a few parameters to include the D3 correction in the...

27 July 2024 5,748 0 View

All math can be explained by iterator of code?

all math can be traversed by code? all math can be translate to code?

26 July 2024 9,530 0 View

Can we eliminate the stress singularity at the tip of the crack by manipulating the elastic constants?

The aim of the research here is to prevent the propagation of the crack in the fabricated elastic medium with useful applications.

25 July 2024 9,976 3 View

Flow through curved domains?

Hi everyone, I am working on a curved domain in which a ship is situated in the middle (geometry is given below). In my understanding the general fluid flow is parallel to the x axis from inlet to...

25 July 2024 9,058 4 View

Asmat Ali

Interesting question and amazing observation of the player. But it needs validation preferably from some empirical study.

Martin Schulz

Dear Friends,

In the meantime I found this:

http://www.nature.com/srep/2014/140529/srep05068/full/srep05068.html

but I didn't go into the details up until now.