An overview of the nature and properties of electromagnetic radiation, including a discussion of the electromagnetic spectrum, the nature of photons, ...View Details

An overview of the basic morphology and physiology of plants, including a discussion of the main types of plants, stems, roots, leaves, plant transpor...View Details

In this special episode I am joined by Jared Bauer, cofounder of Wisecrack, to discuss science and philosophy in movies and popular culture. We cover ...View Details

In the final episode of our series on computers, I give an introduction to high-level programming languages, how they relate to assembly language and ...View Details

In this the fifth episode of the series 'how computers work', I begin with a summary of some of the major methods of improving the performance of the ...View Details

In this fourth part in our series on computers, I begin with an overview of the von Neumann architecture used in most modern computers. This leads in ...View Details

In this third part of the series on computers I begin with an overview of Boolean algebra, including a discussion of key logic functions such as NOT, ...View Details

In this second episode in the series, I explain binary digital coding to motivate a discussion of the operation of transistors. Beginning with an exam...View Details

We begin our series discussing how computers work with an overview of the theory of computation, including a discussion of Turing machines and Turing ...View Details

An analysis of the major factors influencing climactic variation over Earth's surface, including a discussion of the effect of differential heating at...View Details