Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Compound interest is interest that's calculated ...

Once described by Einstein as "spooky action at a distance," quantum entanglement may now seem less intimidating in light of new research findings. Osaka Metropolitan University physicists have ...

Principal is the amount you borrowed, and interest is the amount you pay to the lender as a charge for borrowing. To calculate interest, multiply the principal amount by the interest rate, then ...