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When coherent, in-phase light passes through two slits they act as seperate sources, these waves diffract and overlap, causing regions of constructive and destructive interference. When they collide with ...

Simply, aid can be thought of as the provision, assistance, support or relief to a cause (usually in the form of money) for nothing in return. Whether or not receiving aid leads to a country becoming reli...

Normally you use the subjunctive to imply doubt or uncertainty. For example, you might say je doute qu'il soit dans le jardin.Verbs in the negative also trigger the subjunct...

La reponse depend des mots donnés à trouver.

The lithosphere (the solid bit underneath continents) acts as the major compenant of tectonic plates. The asthenosphere (80-200km deep) is a mostly solid layer, despite being described often as ‘molten ro...