If you're a coffee lover, you probably have a favorite type, brand, and even a preferred mug you like to sip out of. But if you've always reached for light or dark roast coffee without really knowing ... Food & Wine: What Is the Difference Between Light Roast and Dark Roast Coffee?

Understanding the Context

At its core, light is a form of electromagnetic radiation, which encompasses a broad range of wavelengths and frequencies. The visible light spectrum, which human eyes can detect, ranges from approximately 400 to 700 nanometers (nm) in wavelength. Add Yahoo as a preferred source to see more of our stories on Google. Light roast coffee is a go-to choice for the occasional coffee drinker or those who prefer a milder, more delicate roast.

Key Insights

Unlike ... Wired: How I Learned to Stop Worrying and Love Light Roast Espresso Time was, in those forgotten years called the "late ’90s,” espresso only meant dark roast. And “espresso roast” meant oily-dark beans. At least that’s what they still write on Starbucks bags. But then ...

Final Thoughts

Light, visible light, or visible radiation is electromagnetic radiation that can be perceived by the human eye. [1][2] Visible light spans the visible spectrum and is usually defined as having wavelengths in the range of 400–700 nanometres (nm), corresponding to frequencies of 750–420 terahertz. Light is a primary tool for perceiving the world and interacting with it for many organisms. Light from the Sun warms the Earth, drives global weather patterns, and initiates the life-sustaining process of photosynthesis; about 10 22 joules of solar radiant energy reach Earth each day. Light: Science and Applications is an open access journal that publishes the highest quality articles in basic and applied optics and photonics.