[alancalverd]

IMO, this video provides intuitive explanation to answer the question.
Quote from: hamdani yusuf on 13/05/2024 13:23:20
What IS activation energy, really?

It is the energy you need to add to a system to displace it permanently from a local equilibrium.

[hamdani yusuf]

IMO, this video provides intuitive explanation to answer the question.
Quote from: hamdani yusuf on 13/05/2024 13:23:20
What IS activation energy, really?

It is the energy you need to add to a system to displace it permanently from a local equilibrium.

The video explains how it can be manifested in the form of chemical bonds.

[alancalverd]

Surely not? The activation energy is what you need to input to a mixture to break chemical bonds and initiate a reaction.

[hamdani yusuf]

Surely not? The activation energy is what you need to input to a mixture to break chemical bonds and initiate a reaction.

Have you watched the video?

[mxplxxx]

Easily. It is over a century old and people are still struggling to both understand it and make it useful.

[paul cotter]

Activation energy is a basic principle and one does not need a video to understand it. A kilogram of nitroglycerine sitting on a table has a lot of stored energy in the form of fuel and oxidiser in intramolecular form. Why does it sit there inert when the thermodynamics suggest ~1600Mcal are waiting to be released? The reason is that although thermodynamically unstable it is kinetically stable requiring a certain minimum activation energy to initiate an initial autooxidation which starts a chain reaction. Some reactions need very little in terms of activation and others need a lot. 

[alancalverd]

Easily. It is over a century old and people are still struggling to both understand it and make it useful.

Which "it" are you talking about?

[mxplxxx]

Which "it" are you talking about?

Have a guess.

[alancalverd]

Since none of my colleagues, students or clients struggles to understand either quantum mechanics or activation energy, and they all use both every day, I cannot possibly guess what you are talking about.

[mxplxxx]

Since none of my colleagues, students or clients struggles to understand either quantum mechanics or activation energy, and they all use both every day, I cannot possibly guess what you are talking about.

Good luck to you. I guess you and your super-intelligent coterie would have no trouble understanding the following description of Quantum Parallelism:

"Central to the power of quantum computing is the concept of quantum parallelism: quantum systems can explore and process multiple computational paths simultaneously. In this paper, we discuss the elusive nature of quantum parallelism, drawing parallels with classical parallel computing models to elucidate its fundamental characteristics and implications for algorithmic performance. We begin by defining quantum parallelism as arising from the superposition of quantum states, allowing for the exploration of multiple computational paths in parallel. To quantify and visualize quantum parallelism, we introduce the concept of quantum dataflow diagrams, which provide a graphical representation of quantum algorithms and their parallel execution paths. We demonstrate how quantum parallelism can be measured and assessed by analyzing quantum algorithms such as the Quantum Fourier Transform (QFT) and Amplitude Amplification (AA) iterations using quantum dataflow diagrams. Furthermore, we examine the interplay between quantum parallelism and classical parallelism laws, including Amdahl's and Gustafson's laws. While these laws were originally formulated for classical parallel computing systems, we reconsider their applicability in the quantum computing domain. We argue that while classical parallelism laws offer valuable insights, their direct application to quantum computing is limited due to the unique characteristics of quantum parallelism, including the role of destructive interference and the inherent limitations of classical-quantum I/O. Our analysis highlights the need for an increased understanding of quantum parallelism and its implications for algorithm design and performance."

[hamdani yusuf]

description of Quantum Parallelism:

What's the source of the paragraph that you quoted? Who are "we" there?

[hamdani yusuf]

Some reactions need very little in terms of activation and others need a lot. 

What makes the difference?

[mxplxxx]

description of Quantum Parallelism:

What's the source of the paragraph that you quoted? Who are "we" there?

https://arxiv.org/abs/2405.07222

[hamdani yusuf]

Activation energy is a basic principle and one does not need a video to understand it.

The video is a response to other videos trying to explain about activation energy and chemical bonds.

Chemistry text books say molecules like glucose store energy in bonds. Are they wrong? What even is chemical energy anyway? And what ARE chemical bonds? And are they JUST abstract concepts? Are Derek Muller and Nick Lucid correct when they say bonds don?t store energy? We look at the science and chemistry of molecular energy and answer the question: Where do molecules store their energy?

The author of the video saw the need to clear up some potential widespread confusion regarding this topic.

[alancalverd]

What makes the difference?

The nature of the chemical bonds in the reagents.

[mxplxxx]

Maybe the question should be "how does Reality work". Unfortunately, classical physics is based on mathematics which is ill-equipped to answer this question. Not knowing how their their trade works, physicists are involved in an eternal tug of war trying to justify pet theories. Along comes Quantum theory and the situation gets even worse. This theory seems to defy the basis of Reality according to classical physics.

imho, quantum theory is classical physics meeting computing. All of the weirdness of quantum physics disappears when physics is done via computer simulations. Entanglement is standard computing via references. Superposition is concurrent states. Quantum Theory screams out that the Universe is a computer. If so, we should be looking at using this computer to our advantage. I guess Quantum Computing is doing just that.

It is likely current computers are quantum computers. They can implement all (?) of current quantum theory.

[varsigma]

i cant help but spot the obvious here:

If you claim something is wrong with a theory, you're sort of obliged to point out what it is.

And pages later, you haven't. still. Nor has the team at the LHC, incidentally.

[hamdani yusuf]

DO NOT Study Quantum Mechanics | Nobel Physics Laureate Tony Leggett's Controversial Warning

GUEST BIO:
Tony Leggett is a Nobel Prize-winning physicist at the University of Illinois at Urbana-Champaign.


Don't Spend Too Much Studying Quantum Mechanics | Tony Leggett at The UIUC Talkshow
DO NOT Study Quantum Mechanics | Nobel Physics Laurate Tony Leggett

A comment : "Well, title is a little bit misguiding, if I got it somewhat right from the talk, he actually meant not to look too much for the meaning or interpretation of qm cause it is probably not the full picture yet."

[alancalverd]

He has a point. Some people look for "meaning" or "interpretation" instead of simply accepting that as with all physics, quantum mechanics is a set of equations that describe what happens and help us predict what will happen next. There's little point in  "studying" a telephone directory or a dictionary - just accept that it can give you the right answer when you need it, and when it doesn't, we'll rewrite the wrong bits.

The problem will persist for as long as there are philosophers who tell you that it is complicated and mysterious, and we stick to teaching classical mechanics and trying to tack QM onto classical concepts.

[hamdani yusuf]

The Problem With Quantum Theory | Tim Maudlin

From Schr?dinger's cat to General Relativity, Professor of Philosopher at NYU, Tim Maudlin, explains the problem with quantum theory today.

Tim Maudlin is Professor of Philosophy at New York University with interests primarily focused in the foundations of physics, metaphysics, and logic. His books include Quantum Non-Locality and Relativity, Truth and Paradox and The Metaphysics Within Physics.