Statistics
The Rule Hidden in the First Digit: Benford's Law
In many naturally occurring sets of numbers, smaller leading digits appear far more often: about 30.1% start with 1, and only about 4.6% with 9. This article explains the definitio
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810 articles found
Earth science
The Formation and Roles of Dew and the Principles of Change in Nature
Dew consists of tiny water droplets commonly seen in nature, but its formation and roles are highly complex and have important significance. Dew forms when water vapor in the atmos
Physics
Why Cold Coffee Never Warms Back Up: Entropy
Entropy is a quantity that captures why nature flows in only one direction. This article covers its origin with Clausius, the Second Law of Thermodynamics, Boltzmann's probabilisti
Statistics
Methods for Managing Data Variability Using Standard Deviation
Standard deviation plays an important role in describing data variability and is an essential concept used in a wide range of practical situations. In data analysis and decision-ma
Education
The Key Impact of Educational Philosophy on Education
Educational philosophy is an academic field that identifies the nature and values of education and offers practical direction through systematic, in-depth inquiry into its purposes
Robotics
Reaching Out a Hand from Afar: Teleoperation
Teleoperation lets a person control a distant machine directly, sending their hands and eyes where people cannot safely go. This article covers its origins in 1940s–50s nuclear lab
Information technology
Just Keep the Key Secret: Kerckhoffs's Principle
Kerckhoffs's Principle holds that a cryptographic system should stay secure even if everything except the key is known. This piece covers Auguste Kerckhoffs's 1883 “La Cryptographi
Food & nutrition
How to Choose and Use Health Foods Properly
In modern society, rapidly changing lifestyles and irregular eating habits make it difficult for many people to maintain their health. In these circumstances, health foods are attr
Economics
Fiscal Policy Strategies for Promoting Economic Growth and Strengthening Stability
Fiscal policy is a key tool for promoting the stability and growth of a national economy, playing an important role as governments use it to adjust economic conditions, address imb
Business administration
Strategies for Efficient Task Force (TF) Operations
Efficient problem solving is one of the challenges commonly faced by many organizations and businesses. To address such problems, many organizations have recently been using specia
Food & nutrition
Changes in Food Processing: Toward Better Nutrition and Health
Food processing has played an important role in addressing humanity's food supply challenges and improving nutritional status. Today, food processing is evolving beyond techniques
Library & information science
One Number for Papers and Citations: The h-index
The h-index folds the number of papers and the number of citations into a single figure. This article covers how to calculate it, what it measures and its strengths, its limits acr