At the interface between two facets of an artificial crystal, sound waves can be transmitted in the opposite direction to that expected, and undergo no reflection. Such wave behaviour could have ...

Learn about the features of waves, their properties and uses in day to day situations, and how to calculate their speed,as well as satellite communication.

(Supplied: Yoav Daniel Bar-Ness) Meteorologist from the Bureau of Meteorology Ellie Mathews explained that rainbows were formed by the refraction and reflection of sunlight within a raindrop.