Part 2/8:
The session begins with a nod to early experimental devices, specifically a rudimentary mirror galvanometer. Described as "primitive" and almost embarrassing to display, this device serves as an example of foundational electric measurement technology. Its simple construction, involving energy input at the bottom and a spring-loaded moving needle, exemplifies the basic principles of current detection. Despite its antiquity, this galvanometer still plays a role in the setup, illustrating the blend of old and new technology in the space.