Welcome to the Department of Physics and Astronomy at the University of Delaware, where the pursuit of scientific discovery and innovation meets cutting-edge research and academic excellence. Our ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Marguerita is a Certified Financial Planner (CFP), Chartered Retirement Planning Counselor ...

Pi (𝜋) is a mathematical constant that is the ratio of a circle's circumference to its diameter. Pi is irrational and does not repeat its decimal representation ...

Talking to yourself is very common and can be good for you. If your self-talk is positive, it can help you feel better and reach your goals. Be careful with negative self-talk, as it can make you feel ...