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-1
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2answers
63 views

Creating elements without using the basic elements

Have there ever been created an element in the history (I'm talking about the 20 well known synthetics element) without using any other of the available elements from the nature? For example, element ...
1
vote
1answer
43 views

Are differences between elements besides the number of valence electrons negligible in forming matter and giving certain properties?

We were talking about life complexity, I don't know almost anything about physics, he told me that differences between elements beside the number of valence electrons are negligible and elements with ...
3
votes
0answers
52 views

In the αβγ cosmology paper, how do the authors assume the integral of density over time in the early universe?

In the famous Alpher-Bethe-Gamow paper, the authors say: "it is necessary to assume the integral of $\sigma_n dt$ during the building-up period is equal to $5 \times 10^4 \frac{\text{g ...
2
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0answers
46 views

How do experimental physicists know the decay path of transuranium elements ahead of time?

I have been watching (and enjoying) Dr. Poliakoff's YouTube videos on the synthesis of transuranium elements like Roentgenium and Copernicium, which decay so quickly that they are identified (if I ...
2
votes
0answers
59 views

How common is compromised reference data for physical properties of materials and elements?

This question concerns Monte Carlo simulation of electron scattering in complex material structures, especially the reliability of publicly available source codes and reference data for physical ...
0
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0answers
28 views

element effect on quantum dot band gap

Main Question: Why do Au QDs have quantum confinement effects which change optical behavior from the bulk Au, whie certain other elements (such as Fe) are typically not shown to have the same ...
0
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0answers
9 views

Does the spin-orbit interaction increase or decrease as one moves across the periodic table from boron to fluorine?

Does the spin-orbit interaction increase or decrease as one moves across the periodic table from boron to fluorine? I'm studying for a test. This is not homework. I just don't understand how to ...
0
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0answers
19 views

Separating elements in a molten asteroid

I was reading some material about asteroid mining and diverse projected methods of on-site processing of the metals/gases, and that got me thinking about what would happen if the whole asteroid was ...