Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Jennifer Simonson is a business journalist with a decade of experience covering entrepreneurship and small business. Drawing on her background as a founder of multiple startups, she writes for Forbes ...

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 ...

Available on npm. Can be used in a Node.js program or with a module bundler such as Webpack or Browserify. jsQR is designed to be a completely standalone library for scanning QR codes. By design it ...

A modern WebRTC client implementation using Observable HQ's runtime, designed to work with the Go2 WebRTC API. This client provides a clean, intuitive interface for WebRTC connections and real-time ...

Classical conditioning is a way to learn using unconscious associations. Pavlov discovered classical conditioning when dogs started to salivate at the sound of a bell before they got food. The ...