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810 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
Robotics
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
Film & media
Day for night is a filmmaking technique that makes scenes shot in daylight look like night. This article covers why filmmakers shoot night in the daytime, the four main ways to fak
Physics
The universe remains full of mysteries, and dark matter is among its greatest enigmas. Although invisible, dark matter is estimated to make up approximately 27% of the universe, an
Psychology
Depression is emerging as an important issue in society, and many people suffer from this condition. Depression is a serious illness that goes beyond a simple low mood, involves ps
Film & media
Why do films and dramas cut from distant shots to close ones? This article explains the main shot types used in video production, namely the long shot, full shot, medium shot, bust
General knowledge
Cardiopulmonary resuscitation (CPR) is a basic first aid technique for saving the life of someone in cardiac arrest. This technique temporarily replaces the functions of the heart
General knowledge
This time, I would like to put together material on the process through which research in the social sciences is conducted. Unlike natural science research, which studies matter th
Business administration
The Theory of Constraints holds that a system's performance is determined by its single weakest link, so that constraint should be found and managed with focus. Learn what it is, t
Statistics
In this article, we will explore the concept of norms. Norms refer to the scores used as a basis for comparison when comparing an individual's test score with those of other people
Library & information science
This time, we will explore the concepts of primary (1st-order) and secondary (2nd-order) sources, which are commonly discussed in library and information science. These are among t
Tourism studies
A duty-free shop sells goods to travelers leaving the country without customs duties or value-added tax. This article covers how duty-free shops began, why they can drop taxes, the
