Physicists have debated which way a submerged sprinkler sucking in water would spin. Careful experiments provide an answer.

Researchers at New York University’s Courant Institute conducted a series of experiments with different silly sprinkler ...

ETF: inverse daily Apple exposure via swaps. Learn risks like compounding/volatility and sizing—use tactically.

Aaron McDade is a breaking news reporter for Investopedia. He is an experienced journalist who has covered everything from the latest in business and tech news to sports and international news like ...