Refractive-index microscope measures a sample's optical properties with pinpoint accuracy

By combining two fundamentally different microscopy techniques, researchers can now measure the optical properties of a ...
Investopedia

What Is Gross Income? Definition, Formula, Calculation, and Example

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

100 Years Before Quantum Mechanics, a Physicist Spotted Its Hidden Clue

Long before quantum mechanics existed, a scientist developed a powerful way of describing motion by drawing an analogy between particles and light.
Investopedia

Discount Rate Defined: How It's Used by the Fed and in Cash-Flow Analysis

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 ...