In quantum mechanics, it’s just as natural to go forward in time as going backwards. And if you look at a typical Feynman diagram, you can turn the diagram either way. Where does this transition from time symmetry...

SUMMARY

The second law of thermodynamics states that overall entropy of any isolated system can never decrease. Entropy is a measure of the disorder in a system (roughly). However, living things don’t seem to...

Five areas of physics worth remembering: Classical mechanics, energy and thermodynamics, electromagnetism, Relativity, and Quantum Mechanics. Classical mechanics - two main concepts worth knowing. The first is...

We just finished looking at some catalytic hydrogenation reactions, so let's look at another extremely important application of hydrogen gas. Ammonia is a critically important compound for many reasons, particularly fertilizer production...

We explore the fundamental nature of entropy and its deep link to information. If you were taught that entropy measured disorder, you are in for a treat!

Chap
ters:
0
0:00 Intro
00:10 Macro-
and Microstates
02:06...

Heat death of the universe, also called The Big Chill or Big Freeze, will happen when the entropy of the universe will be so high that everything and everyone that lives in it will perish. This will happen because an organism living in...

A Boltzmann brain is not real, but what’s fascinating about it is that it thinks it’s real, and all the memories and experiences it has are real. But, of course, this brain is not real. But how would such a brain know that its...

This video explains how to handle passwords securely.

While observing this simulation model of a car, you can virtually see entropy and the second law of thermodynamics with your own eyes. In this video you will discover one of the most fundamental laws of nature, which can not only explain...

In this video we take a look at the technical data of how heat pumps work. Covering the basics, showing the typical system along with the main components and an animated drawing explaining its operation in both cooling and heating mode...

This video guides you through the advanced operation of a chiller, making use of animations, illustrations and 3D models to help build your understanding.

This covers the basics of a centrifugal chiller in a typical office...

This video guides you through the basic operation of a chiller, making use of animations, illustrations, 3D models and real world photographs to help build your HVAC understanding.

This covers the basics of a air cooled chiller in...

Theoretical physicist and Nobel Laureate Roger Penrose (Oxford) describes why he thinks Stephen Hawking was wrong to change his mind about information loss in black holes.

Nobel Laureate Roger Penrose, University of Oxford, describes a profound puzzle that he's been wrestling with throughout his entire research career: how is it possible that the universe began in a peculiar state of both minimum and...

Theoretical physicist and Nobel Laureate Roger Penrose (Oxford) describes how the sun's entropy is harnessed by all manner of life on earth.

Nobel Laureate Roger Penrose (Oxford) describes two different instances of the Second Law of Thermodynamic: expansion of gases and clumping due to gravity.

Nobel Laureate Roger Penrose (Oxford) tells us why he is sceptical of the inflationary theory of cosmology.

Nobel Laureate Anthony Leggett (Illinois) speculates on how we might re-interpret the famous EPR experiments by flipping the arrow of time.

Nobel Laureate in Physics Roger Penrose (Oxford) relates his longstanding bemusement at why the early universe was in such a peculiar low state of entropy.

Nobel laureate in Physics David Politzer (Caltech) uses a banjo to demonstrate how octaves and harmonics arise from vibrating strings.

Nobel Laureate Roger Penrose, University of Oxford, describes why he believes that inflationary cosmology doesn't explain the mystery of why the universe began in such an unlikely, very smooth state, arguing that had it started out...

This week on Nature League, Brit sits down with Hank Green to discuss invasive species and the nuances surrounding their existence and impact.

A Boltzmann brain is not real, but what’s fascinating about it is that it thinks it’s real, and all the memories and experiences it has are real. But, of course, this brain is not real. But how would such a brain know that its memories...

Cholesterol Structure (Part 1 2)