Scientific Principles & Methods

When to Use a Chi-Square Test of Independence

What Are the Characteristics of the Hard Sciences?

The Sharquisha Incident: The Viral Video and Aftermath

When to Use Spearman vs Pearson Correlation

Why Do Helium Balloons Deflate in the Cold?

When to Use Random Sampling in Research

Understanding ANOVA: Principles, Types, and Calculations

How Was Ultraviolet Light Discovered?

Can Observational Studies Show Causation?

How Are Roller Coasters Made From Start to Finish?

What Happens When a Spinning Ice Skater Draws in Her Arms?

How Does a Paper Airplane Fly? The Science Explained

What Is a Nuclear Cooling Tower and How Does It Work?

How to Remove Static From a Plastic Bag

What Materials Affect How Aerodynamic a Paper Airplane Is?

How Does a Siren Work? The Science of Sound and Signals

How to Find and Reduce Measurement Error

Why Sample Size Is Important in Scientific Research

What Are Test Tubes Used for in a Laboratory?

Why Should an Experiment Be Repeated?