Theory is based off of...

Plum Pudding Model

The Plum Pudding Model is an atom model proposed by J.J. Thompson, another very well known physicist. It is also known as the Chocolate Chip Cookie or Blueberry Muffin Model. You can easily picture it by imagining the said foods. For example, you can imagine a plum pudding wherein the pudding itself is positively charged and the plums, dotting the dough, are the negatively charged electrons.

Thus, in contrast to today’s atom that has a very dense and very small (compared to the whole atom) positively charged nucleus, Thomson’s had a more dispersed positive charge. As a whole, the plum pudding representation only strived to explain why most atoms were neutral.