In the world of chemistry, efficiency is defined as: the work a system does, divided by the energy given to that system to complete the work. Sal illustrates this important chemistry concept by drawing a PV graph that shows a Carnot...

One of the greatest inventions is the steam engine. But why? What makes it so useful? And how does it work? In this video episode of Crash Course Physics, Shini talks to us about how engines work, what makes them efficient, and why...

A video lecture discussing the four processes of the Carnot cycle. Each step of the process is described and illustrated relating the temperature change and whether heat was absorbed or released. Also explained is the P-V diagram for the...

A video lecture proving the Carnot engine is the most efficient engine. The video starts by explaining the basics of heat engines and the Carnot engine. Then the video compares the efficiency of the Carnot engine and a proposed super...

Proving that a Carnot Engine is the most efficient engine

A video lecture defining efficiency for a heat engine and the efficiency of a Carnot engine. Using the area under the PV diagram, the lecture explains how the efficiency of an engine could be calculated. [14:04]

Definition of efficiency for a heat engine. Efficiency of a Carnot Engine.

Learn how the Carnot engine is the most efficient engine in this video lecture. The lecture begins with describing a heat engine and the steps of Carnot cycle. The video also explores how the engine would need to be frictionless and...

A video explaining how the Kalina cycle uses a mixture of two working fluids for power production. [5:43]

Understand one of the most valuable but confusing laws of nature, the second law of thermodynamics, in this video. Video will explain the law and then examine real-world applications. [13:50]