# Introduction to Physics

by Jared Rovny
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00:00 So first let’s do a quick overview of all the topics we’ll be covering in physics so what we’re going to do is start with basic mechanics, and unfortunately because we will start with basic mechanics some of these first topics might feel a little counter intuitive.

00:15 The examples might seem a little bit arbitrary, like this apple you see in front of you here, just falling. It may not seem like a medical problem to drop an apple but if we cover these basic mechanics first, we’ll build a very important terminology in some very very useful ways of thinking quantitatively about the world that we’ll be able to use as we move forward.

00:34 So first, we’ll just discuss basic motion and how things move. We’ll move on to forces which means we don’t just let things move on their own but we push them around. And then we’ll ask ourselves how can we put a system with many forces into an equilibrium. We’ll finish our mechanics section by discussing 3 very important quantities in physics that we derive including momentum, energy, or to conserve quantities, and then work which will tell us how to measure changes in energy. This set of 6 that I’ve just shown you, the first three and the least three will finish on mechanics, and having finished on mechanics, we’ll be ready to move towards some things that are incredibly practical and important immediately for the human body including fluids.

01:15 So for example blood, is a fluid moving through your body that follows the physical laws of fluids going into and out of your heart. And then gases which is an example of the fluid in fact which is actually just a more airy fluid or less dense fluid moving in and out of your lungs and then we’ll also talk about periodic motion involve the heart and the lung you can see here, certainly follow this principle of periodic motion that always repeating the same thing over and over.

01:39 And so we learn how to measure those kind of systems and the kind of laws that they'll be, that they follow as well. Then we’ll get to move to some of the more exciting modern source of physics including electricity and magnetism and understanding the relationship between these two. And then we’ll get to apply electricity magnetism to circuits, and what you see in front of you here, an MRI and batteries, any electrical system has gain a central importance to the medical field and the medical sciences.

02:08 And so they apply all around you and it’ll be very important to understand the basic principles that they follow and so we’ll get to see some of those in action. We’ll then move to waves and both light and sound are very important examples of waves in terms of how the eyes and ears of the human body have come to learn, to interact with the surroundings. Light and sound are both gonna follow the same basic principles of waves, so we will discuss waves and their properties and then we’ll actually discuss light and sound in particular and see what laws they follow as well.

02:38 Having done this, we’re going to zoom in very close to the small world that's actually going on inside of us.

02:44 We’re gonna start at the very basic level with atoms. We’ll see basic atomic structure and how atoms work and then move to the atom’s electronic structure and discuss electrons and then be able to use that to the next topic which will be thermodynamics and thermochemistry.

03:00 We’ll get to understand some very key principles here that are very important to any medicines, certainly anything somebody ingests, and how it get metabolized.

03:09 We’ll be able to use these principles throughout medicine.

The lecture Introduction to Physics by Jared Rovny is from the course Methods and Common Calculations.

### Included Quiz Questions

1. Physical Laws of Fluid.
2. Physical Laws of Motion.
3. Physical Laws of Gravity.
4. Physical Laws of Momentum.
5. Physical Laws of Gases.
1. Eyes and Ears.
2. Ears and Nose.
3. Nose and Eyes.
4. Skin and Ears.
5. Brain and Eyes.
1. Gynecology.
2. Neurology.
3. Pulmonology.