Among the many strange concepts now well documented experimentally are such things as the fact that neutrons and protons (which we used to think were the fundamental particles of the atomic nucleus) are actually made up of six flavors of quarks (named “up,” “down,” “strange,” “charmed,” “bottom,” and “top”). The six flavors become even stranger when they are described as each having three colors (red, green, and blue). The quirky names given to these particles at least prove that scientists have a sense of humor.
