Search results for “henry louis gates jr”

Mauvein: The Invention of the First Synthetic Dye

In the mid-19th century, chemical assistant Henry Perkin was looking for an synthetic substitute for an antimalarial drug. But instead of quinine, he produces the first synthetic dye: mauveine. An accidental product! Authors: ZDF/Terra X/T. Schrader/J. Koester/F. Steinhardt/Moods in Pictures/Maximi

6 Bizarre Signs You're Likely an Intelligent Person

Have you ever wondered if there are some other signs you are intelligent? You know, besides that IQ score and grade on your math test? There are some pretty common signs to tell if someone might be smart. But what about the less-obvious signs? Here are a few bizarre signs you’re likely an intelligen

The Seven Principles of Persuasion

The principles of persuasion are a set of psychological rules to influence others. In his book "Influence", Robert Cialdini presents 6 main principles: reciprocity, scarcity, authority, consistency, sympathy and consensus. Later, he added a 7th principle: uniformity. Knowing these rules can be helpf