Humorous Aside: Intrinsic angular momentum

Quantum theory has some unusual ideas. A particularly unusual one is that a subatomic particle has an intrinsic angular momentum. The idea is as such:

any given sub atomic particle is spinning
however, the amount that particle is spinning never changes

Heisenberg's uncertainty principle

Heisenberg's uncertainty principle states that we cannot know certain pairs of physical properties such as a particle's position and momentum precisely and simultaneously.

Detecting cancer with MRI based pH imaging

It is known that cancerous tumours tend to exhibit acidic pH levels. In fact the urine of patients with advanced cancer can be extremely acidic. It is plausible that the acidity of cancerous tissues is detectable via MRI when the tumour is still very small.