How the heck do we map out a planet without oceans? NASA had to figure that out when we sent the Mariner 9 probe to Mars. There's some tricky, yet fascinating science behind all of it! In this episode of Crash Course Physics, Shini talks...

In this video Paul Andersen explains how heat is the movement of energy from an object with a higher temperature to an object with lower temperature. Heat transfer can occur through conduction, convection, and radiation.

Mr. Andersen explains the difference between potential and kinetic gravitational energy. He also uses physics to calculate the energy in various objects.

In this video Paul Andersen explains how objects in contact with varying temperatures will eventually reach thermal equilibrium with equal temperatures. The amount of thermal energy transferred is related to the mass and temperature of...

A Simple Proof of Conservation of Energy

New ReviewIn this video, we build directly on electric potential energy and electric potential to develop a clear, conceptual understanding of electric potential difference. Using parallel plates and a uniform electric field, you will see where...

New ReviewIn this lesson we derive the change in gravitational potential energy for an object moving in a uniform gravitational field and then use that result as a direct analogy to determine the change in electric potential energy for a charge...

After 25 years of teaching physics, I realized I had been wrong about when you can use the equation Work due to nonconservative forces = Change in mechanical energy. In this video, I break down my mistake, show the correct way to think...

Why is the electric potential energy of unlike charges negative? Why does it decrease as they get closer? In this Flipping Physics lesson, we graph electric potential energy vs. distance for a two-point charge system and use the shape of...

A visual explanation of viscosity using water, maple syrup, and ketchup.

Explore the fundamentals of viscosity and how it impacts fluid flow. Learn why water moves easily while ketchup flows slowly through this clear and engaging physics explanation.

Dive deep into the concept of electric potential energy with Mr. P and the Flipping Physics crew! In this engaging physics lesson, we explore how electric potential energy compares to gravitational potential energy, using a thought...

What happens when a satellite slows down in orbit? Learn how a small Δv transforms a circular path into an elliptical orbit, with step-by-step analysis of orbital energy, period, and arrival timing.

2 minute video Graphing Energy - potential energy, kinetic energy and mechanical energy, for middle school science

Kinetic vs. Potential energy

What drives natural phenomena? Why does entropy only increase or stay the same. Why does a pencil on its tip fall to the table?

Things always tend towards their lowest energy state. Why is nature driven this...

In 2012, the Higgs boson (the God Particle) was discovered. It's responsible for giving mass to fundamental particles. But the scientists never measured the particle. So how can scientists claim a discovery without...

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By the end of 1905, we had two big new equations in physics. Max Planck’s, Energy equals Planck’s constant times the frequency, and Einstein’s Energy equals the mass times the speed of light squared. A...

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Quantum field theory or QFT is the basis of the best theory we have in physics today to explain nearly everything, called the Standard Model of particle physics. What is Quantum Field theory? Why is it...

If a tree falls in a forest and no one is around to hear it, does it make a sound? Philosopher George Berkeley asked this famous question in 1710, and people are still debating it.



Where is the forest...

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Why Everything in the universe is a spring (kind of). Why everything is a spring. Classical springs like you might have in your mattress have a harmonic oscillation. And this behavior has a quantum...

SUMMARY

The law of energy conservation may be the most fundamental law in physics. It says that overall energy is always conserved. It can never be created nor destroyed - it can only change form. But this law...

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...

Discover the true meaning behind the gravitational potential energy formula U = –GMm/r. Learn how it explains bound systems, escape energy, and why gravitational energy is always negative — all through clear, intuitive reasoning.