THE transportation of optical images has been carried out hitherto with the aid of lenses or mirrors or both. As with all optical systems, aberrations are introduced and the parts have to be aligned ...

Machine learning is the ability of a machine to improve its performance based on previous results. Machine learning methods enable computers to learn without being explicitly programmed and have ...

Getting your hair to look sleek, straight, and healthy can feel like solving a difficult math equation. Using hot styling tools to straighten hair strips your hair of moisture, causing breakage. Over ...

Russian forces continue to bombard Ukrainian cities and make slow but steady gains on the battlefield, even as Moscow says it is considering the latest US-brokered peace plan. At least three people ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Learn about the basics of blood pressure and high blood pressure: an overview of risk factors, causes, diagnosis, and treatment. Find out what the top and the bottom blood pressure numbers mean, and ...