Scientific Principles & Methods

How to Calculate and Measure Water Activity

What Is Sound Kinetic Energy and How Does It Work?

Can Impulse Be Negative? The Directional Nature of Impulse

What Is a Good R-Squared Value for a Model?

How Is Optical Density Measured?

What Is a Volt-Amp and How Is It Different From a Watt?

How to Find Mass Without Density

How to Use Capillary Tubes for Sample Collection

How Hard Is Glass on the Mohs Scale?

Sigzil: The 17th Shard Scholar and Worldhopper