Unit A: Nervous and Endocrine Systems

How is light connected to the colours we see? In this STEAM activity make a colourful light catcher and discover why we see different colours?

Explore the concept of persistence of vision in this hands on activity.

How does the human eye see visible light as colour? And why do some people see more colours than others?

The human eye lets us see the world by sending impulses to our nervous system. In many ways, it is very similar to other optical devices, including cameras.

Researchers have found that consuming foods rich in flavanols is linked to more efficient blood flow, which can improve brain function.

Heavy metal is a term for some toxic chemical elements. They can cause problems like bioaccumulation, but are useful in nuclear medicine and medical imaging.