Quantum has become a word for magic
Healing, consciousness and leaps, none of which is physics.
Courses
Start with three things you can do today
How to understand quantum physics without math
Know what is genuinely strange about quantum physics, and what is hype.
Start with what an experiment records. In a two-slit quantum experiment, individual detections can accumulate into an interference pattern. Changing the apparatus to obtain reliable path information changes the result. An observer is part of a measurement setup, not a claim that human attention creates reality.
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A starting goal
I want to understand quantum physics well enough to know what is strange about it and what is hype. Explain the core ideas without equations and with honest limits.
Change any word so it fits your situation. The course is built from what you type and a few setup questions.
Start today
Three things you can do before the course exists.
Useful on their own. The course is for when you want the whole skill, not just the first move.
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Separate a detection from the pattern
In the idealized two-slit example discussed in the Feynman lectures, electrons are detected as individual events. Over many events, the distribution can show interference when the paths remain indistinguishable. One dot is not itself a little interference pattern.
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Compare two experimental arrangements
Ask what changes when an apparatus records which path an electron took. In the arrangement described by Feynman, obtaining that path information removes the interference. The comparison concerns a physical interaction and its records, not whether a person happens to be watching a screen.
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Check the conclusion
Which statement follows: "The apparatus matters to the distribution" or "Thinking about a result makes anything happen"? The first is supported by the example; the second is not. This qualitative account introduces one phenomenon. Quantitative predictions require the mathematical theory, and one analogy does not explain every quantum effect.
Sources: Caltech Feynman lectures: two-slit experiments and path measurement. Practical examples are starting points, not promised results.
- Best for
- Science & nature
- Prerequisites
- None. Bring the situation you have.
- Course length
- 7 to 30 lessons
- Pace
- Yours. One lesson at a time, as often as you like.
- Format
- Read it, or play the audio
- Access
- Available on the App Store and Google Play, with an optional early testing list
Before the course is built
Setup asks about your situation first.
Lesson 1 opens on the moment you describe, and the examples use your role. For this request, expect questions like these.
- What draws you: the weirdness, the technology, or the philosophy?
- How much physics do you have: none, school, or some?
- Have you met the popular claims, like observation creating reality?
Right for now
If any of this sounds familiar, start here.
You want the real strangeness
Which is stranger than the myths.
You gave up on a book at chapter two
The math arrived and you left.
Course arc
Where the course goes, in order.
Cadence writes the lessons for you, so the exact path follows your answers. This is the ground a course built from this sentence covers.
01 / 06Why quantum was needed
The experiments classical physics could not explain.
Superposition and measurement
Connect a description of a quantum state with the outcomes a particular measurement can record.
Uncertainty
What Heisenberg actually said, and what he did not.
Entanglement
Explore correlations between quantum systems and the limits of everyday analogies.
Interpretations
Why physicists disagree about what it all means.
Hype
Quantum computing, quantum healing and the difference between them.
What changes
What you will be able to do, and what you will stop believing.
You will be able to
Explain the core ideas
Superposition, uncertainty, entanglement and measurement, in plain words.
Know the evidence
Understand the experiments that made these ideas unavoidable.
Spot the hype
Recognize when quantum is being used to sell something.
Ideas this course corrects
Observation means a conscious person looking
Specify the physical measurement and information it produces. Do not substitute consciousness for an experimental description.
Quantum physics permits any outcome
The theory gives constrained predictions. A product using the word quantum still needs evidence for its particular claim.
Course questions
What to know before you start.
How to understand quantum physics without math: what can I do today?
Separate a detection from the pattern. In the idealized two-slit example discussed in the Feynman lectures, electrons are detected as individual events. Over many events, the distribution can show interference when the paths remain indistinguishable. One dot is not itself a little interference pattern. Compare two experimental arrangements. Ask what changes when an apparatus records which path an electron took. In the arrangement described by Feynman, obtaining that path information removes the interference. The comparison concerns a physical interaction and its records, not whether a person happens to be watching a screen. Check the conclusion. Which statement follows: "The apparatus matters to the distribution" or "Thinking about a result makes anything happen"? The first is supported by the example; the second is not. This qualitative account introduces one phenomenon. Quantitative predictions require the mathematical theory, and one analogy does not explain every quantum effect.
Is this a fixed course?
No. Cadence builds the course when you type the sentence and answer a few setup questions, so the lessons follow your situation. This page describes what a course built from this request covers. You see the whole path before Lesson 1.
Who is this course for?
Start with what an experiment records. In a two-slit quantum experiment, individual detections can accumulate into an interference pattern. Changing the apparatus to obtain reliable path information changes the result. An observer is part of a measurement setup, not a claim that human attention creates reality. It sits under Science & nature in the Ideas & discovery part of the library.
Do I need any prior experience?
No. Setup asks what you already know and where you want to use it, and the course starts from there. Bring a real situation if you have one; the examples are built around it.
How long does it take?
Most courses run 7 to 30 lessons. The course length is sized to what you asked for. You set the pace: one lesson at a time, as often as you like. Lessons can be read or played as audio.
Does this course award a certificate or degree?
No. Cadence is for practical self-learning and does not award accredited degrees or professional certification.
Start today
Type it, answer a few questions, open Lesson 1.
A starting goal
I want to understand quantum physics well enough to know what is strange about it and what is hype. Explain the core ideas without equations and with honest limits.
Want new features first?