Physical science solved an age-old problem in the 19th century: what makes elements similar or dissimilar? Mendeleev generally is given credit for discovery of underlying structure chemical elements, known as periodic table. Like chemicals, qualia seem to share different relationships within a modality and between modalities. Wundt’s structuralism represents early effort build mind through data...

Which elements are essential for human life? Here we make an element-by-element journey through the periodic table and attempt to assess whether elements are essential or not, and if they are, whether there is a relevant code for them in the human genome. There are many difficulties such as the human biochemistry of several so-called essential elements is not well understood, and it is not clea...

We explore periodic orbits on an equilateral triangular billiard table. We prove that there is exactly one periodic orbit with odd period. For any positive integer n, there exist P d|n μ(d)P ¡ n d ¢ periodic orbits of period 2n, where μ(d) is the Möbius transformation function and P (n) = bn+2 2 c− bn+2 3 c. We count periodic orbits by introducing a new type of integer partition.

Although the periodic system of elements is central to the study of chemistry and has been influential in the development of quantum theory and quantum mechanics, its study has been largely neglected in philosophy of science. The present article is a detailed criticism of one notable exception, an attempt by Hettema and Kuipers to axiomatize the periodic table and to discuss the reduction of ch...

In May 2014, a discussion meeting entitled ‘The new chemistry of the elements’ took place—the first ever linking the Royal Society and the German Academy of Sciences, Leopoldina. The meeting confirmed and highlighted that the periodic table not only still represents the best way of understanding and mastering the fascinating and diverse science and technological applications of the known 114 ch...