IN our text-books on electricity I do not remember to have seen Priestley's name associated with the proof of Coulomb's law as derived from the fact that no electrification can be obtained in the ...

Coulomb's model may seem intuitive, but, for decades, researchers who study rock mechanics and faults have known that it may not be the full story. These scientists have introduced more detailed ...

Imagine a heavy book resting on a table. If you try to gently push the book across the table with the tip of your finger, it may first appear to ...