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794 articles found
Earth science
Red waves that suddenly appear across a clear blue sea are more than a simple natural phenomenon: they are a red tide, which poses a major threat to marine ecosystems. Red tides ha
Education
Why did students tutored one-to-one outscore 98% of an ordinary class? This piece explains Bloom’s 2 sigma problem: the three teaching methods Bloom compared in 1984, what standard
General knowledge
With advances in modern agricultural technology and the widespread use of protected cultivation (greenhouse growing), we live in an era when lettuce, cucumbers, and tomatoes are av
Film & media
The rule of thirds is a composition principle that divides the frame into nine equal parts and places key subjects on the lines or where they meet. This article covers its basic pr
Earth science
A caldera is a large, round basin that forms when the ground above an emptied magma chamber collapses. Learn how it differs from a crater, how it forms, famous calderas around the
Physics
Total internal reflection happens when light traveling from a material with a higher refractive index toward a lower one hits the boundary beyond the critical angle and is reflecte
Logistics
Order picking is the work of retrieving the items a customer ordered, in the right quantities, from where they are stored. We look at why it can account for up to 55% of warehouse
Library & information science
This time, I would like to put together some material on thesauruses, dictionaries that show the various relationships among keywords when searching for the information you want. A
Design
The Doherty Threshold is the principle that when a computer responds within about 0.4 seconds, people and machines stop waiting on each other and productivity rises sharply. This p
Social welfare
Single-parent families are becoming an increasingly important social issue in modern society. Various social welfare programs are available for single-parent families that need fin
Economics
Gross domestic product (GDP) is one of the most important indicators in modern economics, used to measure the size and growth of a country's economy. By capturing the sum of a coun
Film & media
Video technology has advanced noticeably over time, and screen scanning (Scanning) technology in particular has greatly improved video resolution and quality. Screen scanning refer
