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Continuing with last week's introduction of calculus, Shini leads us through the ways that integrals can help us figure out things like distance when we have several other key bits of information. Say, for instance, you wanted to know how far your window was off the ground. By using integrals, a tennis ball, and a stop watch, you can figure that out! It's all here in this episode of Crash Course Physics!

Did you know that centrifugal force isn't really a thing? I mean, it's a thing, it's just not real. In fact, physicists call it a "Fictitious Force." Mind blown yet? To explore this idea further, this week Shini sits down with us to discuss centripetal force, centrifugal force, and a few other bits of physics to help us understand Uniform Circular motion.

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Explore the lytic and lysogenic viral replication cycles with the Amoeba Sisters! This video also discusses virus structures and why a host is critical for viral reproduction. Expand details for table of contents and further reading suggestions! This updated video replaces our older virus video

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Our universe contains an amazing array of celestial objects, sometimes referred to as celestial bodies or astronomical objects. Though most of the observable cosmos is composed of empty space, this cold, dark void that is sparsely populated by a number of astronomical objects that range from the common to the bizarre. Known collectively by astronomers as celestial objects, celestial bodies, astronomical objects, and astronomical bodies, they are the stuff that fills the empty space of the universe. Most of us are familiar with the stars, planets, and moons. But beyond these everyday celestial objects, lies an amazing collection of other wondrous sights. There are colorful nebulae, delicate star clusters, and massive galaxies. Pulsars and quasars add to the mystery, while black holes swallow up every bit of matter that comes too close. And now, the search is on to identify the mysterious, invisible objects known as dark matter. Join Sea and Sky for an intriguing journey as we discover these amazing celestial objects.

CALCULUS! Today we take our first steps into the language of Physics; mathematics. Every branch of science has its own way to describe the things that it investigates. And, with Physics, that's math. In this episode, Shini talks us through derivatives and how calculus helps us to understand the world around us.