Molecular properties and reactions are controlled by electrons in the molecules. Electrons had been thought to be particles. Quantum mechanics showed that electrons have properties not only as particles but also as waves. A chemical theory is required to think about the wave properties of electrons in molecules. These properties are well...

Legendary investing author and philosopher Benjamin Graham lived through interesting times. Soon...

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Th e first edition of Th e Focal Encyclopedia of Photography was published in 1956 at a time when innovations in silver halide technology, photographic tools, and practices were growing exponentially. Reading the Introduction to the First Edition published by Hungarian author Andor Kraszna-Krausz, the fi rst chairman of the editorial board,...

The urgency attached to the agenda of international terrorism and human and drugs- trafficking has forced the European Union into new cooperation with Africa and Asia. These...

Do you carry around a pocket full of cash, telling your friends that cash is...

"Shoot," I muttered when the paper sliced my finger; I pulled it out to examine the damage. A single drop of blood oozed from the tiny cut. It all happened very quickly then. Edward threw himself at me, flinging me back across the table... I tumbled down to the floor by the piano, with my arms thrown out instinctively to catch...

The reason you write sales or pitch letters is simple: You have a message you want to deliver to the letter reader. In today’s electronic world, you may deliver the written word in a format other than ink on paper. Your letter might be delivered via e-mail, or as an open letter on a Website. Some letters are still delivered via fax...

This...

How can a robot decide what motions to perform in order to achieve tasks in the physical world...