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The word 'flux' can be used in many different contexts, but in general it refers to the amount of 'stuff' passing through a unit area of space per unit time. In the case of light sources, we can measur...

This question started from the concept of 'canvas'. 

After WW2, artists started to be sceptical about human rationality. And the canvas was the symbol of human's rationality in art area. ...

To determine the side effects of taking the drug on humans, to test for toxicity, to determine the correct dosage needed, and to test the effectiveness (efficacy) of the drug.

Crude oil is seperated using a method called fractional distillation. The hydrocarbons that make up crude oil have different boiling points, so when the crude oil is heated, each compound evaporates at...

The definite particle in arabic includes the letters 'alif' and 'laam' at the beginning of the word, so pronounced as 'al'. The purpose is to render the noun on which it is pre-fixed to. Consequantly, ...