Convexo

The video tutorial covers two main topics: the perimeter of a circle and the historical uses of convex lenses. It begins with a discussion on calculating the perimeter of a circle, followed by an exploration of how convex lenses have been utilized for vision correction, magnification, and fire-making over the past 3000 years.

What is the primary function of convex lenses?

How have convex lenses been utilized in vision correction?

In what ways can convex lenses be used to magnify objects?

What historical significance do convex lenses hold in relation to fire-making?

Discuss the historical timeline of convex lenses usage over the past 3000 years.