For comparison, the radius of a typical bacterium is 1 × 10-6 m and the radius of a human hair is about 1 × 10-4 m.

The nucleus is very small compared to the atom as a whole: as electrons are even smaller, most of an atom is empty space the diameter of a nucleus can be 100,000 times less than the diameter of an ...

Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly the same consistency throughout, with negatively-charged electrons scattered about in it like raisins in a pudding.

Studying the structure of the atom on smaller scales and being able to produce particles with higher masses is what drove the development of accelerators with ever-higher energies. In a ...

Together with new calculations of the structure of atomic nuclei, theoretical physicists from the Technical University of Darmstadt and Leibniz University Hannover were able to show that measurements ...

In fact, each gene in cellular DNA contains the code for a unique protein structure. Not only are these ... that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl ...

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical that encodes instructions for building and replicating almost all ...

A new study from MIT offers an explanation for how collagen ... atom also forms a double bond with an oxygen atom, forming a molecular structure called a carbonyl group. This carbonyl oxygen ...