A group of 12-year-olds is discussing whether it’s ever okay…

A group of 12-year-olds is discussing whether it’s ever okay to break the rules. Some argue rules should always be followed because authorities set them, while others suggest evaluating the principles behind rules. According to Kohlberg’s theory, these children are demonstrating:

Scientists had long theorized about electromagnetic waves, b…

Scientists had long theorized about electromagnetic waves, but their existence could not be confirmed until Heinrich Hertz built equipment capable of producing and detecting radio waves in 1887. This verification of something that had always existed represents: