Episodes
Thursday Nov 28, 2013
Episode 52: Applications of Optics
Thursday Nov 28, 2013
Thursday Nov 28, 2013
We begin by discussing some of the basic principles of image formation in lenses and mirrors, including reflection in flat mirrors and curved mirrors, use of ray diagrams, real and virtual images, and the different ways in which images can be formed. These basic principles are then applied to gain an understanding of a number of interesting optical phenomena, including mirages, rainbows, and thin-film interference. I conclude the episode with a discussion of optical magnification, and how this is used in telescopes and microscopes.
Sunday Nov 24, 2013
Episode 51: Acids and Bases
Sunday Nov 24, 2013
Sunday Nov 24, 2013
A discussion of acids and basis, including a definition and description of the concepts of acidity and basicity, a look at the relationship between the concepts of strength, concentration, and corrosivity, a discussion of weak acids and acid-base equilibria, and an explanation of pH and how buffer solutions act to stabalise pH levels in solution.