Electromagnetism
Why magnetic force does no work—even in a moving rod
A moving conductor can power a circuit without the magnetic force doing work on its charges. The key is to include both the rod’s motion and the charge’s drift.
A closer look at the universe.
Ideas · Discoveries · UnderstandingIdeas worth understanding
Explore all articlesQuantum Physics
What does a quantum state actually tell us?
Start with the predictions of the theory, and separate what can be measured from what must be interpreted.
Relativity
The time a clock actually measures.
Proper time begins with one clock, two events, and the path that connects them.
Explore the branches of physics
From the smallest to the largestCosmology & Astronomy
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Matter at the smallest scales
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Physics that becomes technology
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From the editor
Physics begins
with a good question.
What is time? How does light carry energy? What can a new experiment really tell us? ConceptualPhysics.in explores the ideas behind the equations and the evidence behind the discoveries.
An independent publication founded by physics educator Geetha Prasad, for students, teachers, and anyone who wants to understand the physical world more deeply.
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