Why Does Slicing a Cone Give an Ellipse?

The intersection of the pink plane with the blue cone is an ellipse (shaded orange when y > 0 and brown when y < 0). The length of either red line added to the length of either yellow line is constant. 

Currently my favorite YouTube channel is “3Blue1Brown“, created by Grant Sanderson.

With excellent visuals and high production quality, Grant both shows and explains mathematics in a way that … Read the rest

The Road Ahead

My plans for this blog are ambitious.

My main goal for Infinity is Really Big is to bring you excellence in mathematical content for your personal and professional growth.

YouTube-Related Content

As of the early January 2019, my YouTube channel, “Bill Kinney Math“, is moderately successful. It has over half a million views and over 4400 subscribers. The … Read the rest