Photo of Albert Einstein lecturing in Vienna, 1921, by Ferdinand Schmutzer via Wikimedia Commons.

Science and maths educator Selwyn Holland shares a lesson on physicist Albert Einstein and how his theories of relativity significantly changed our understanding of time and gravity.

Selwyn Holland is holding The Everything Einstein Book by Shana Priwer and Cynthia Phillips.

An extended version of this conversation along with other resources can be found via the Wide Open Air Exchange podcast page.