The Atomic Theory of Origami. ... For example, Lang said, the model assumes the origami can be made to fold flat even with defects, but in reality, defects can prevent the sheet from flattening.

GCSE; AQA Trilogy; Models of the atom - AQA Further developments to the atomic model. The idea of the atom as the building block of matter has developed over time. What was thought of as a single ...

As soon, for example, ... The prevailing theory of atomic structure, which we owe so largely to Prof. Bohr himself, might be characterised as “the central orbit theory.” ...