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Is It Even Possible to Understand Quantum Mechanics?

By: Rhett Allain β€”
Common sense is of no help in studying reality at the atomic scale.
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Transistors Changed Everything. Here’s How They Work

By: Rhett Allain β€”
How a tiny little electronic switch sparked the computer revolution.
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Squeeze More Juice Out of Your Dead Batteriesβ€”Using Physics

By: Rhett Allain β€”
How the joule thief circuit β€œsteals” energy from seemingly depleted power cells.
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What Is Entropy, Really?

By: Rhett Allain β€”
Never mind the β€œheat death of the universe.” Entropy is just a bridge between two levels of reality.
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Drive Slower, Save Money on Gas. Thanks, Physics!

By: Rhett Allain β€”
Planning a Fourth of July getaway? Use less gasβ€”and cut your emissionsβ€”by easing up on the pedal.
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How Can Soccer Players Bend Their Shots in Midair?

By: Rhett Allain β€”
As World Cup action kicks off, we look at the physics of the beautiful game.
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All the Fancy Measuring Devices Used in Science Rely on Two Stone-Age Techniques

By: Rhett Allain β€”
The many methods we use to gather data ultimately boil down to either counting or comparing.
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Build a Radio Wave Detector With Balls of Aluminum Foil!

By: Rhett Allain β€”
Here’s how you can hack together a radio transmitter and receiver out of stuff you have at homeβ€”and explore the weirdness of wireless.
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Do Lightsaber Blades Have Mass?

By: Rhett Allain β€”
On Star Wars Day, we put to rest a question that has bedeviled sci-fi nerds for years.
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How Can Astronauts Tell How Fast They’re Going?

By: Rhett Allain β€”
Weirdly, spaceships have no direct way to gauge their own speed. Luckily, we can use some physics tricks to figure it out.
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One Way or Another, Most of Our Electricity Comes From Solar Power

By: Rhett Allain β€”
That’s good news, since the forecast is sunshine for the next 5 billion years.
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You Can Approximate Pi by Dropping Needles on the Floor

By: Rhett Allain β€”
Who needs a supercomputer when you can calculate pi with a box of sewing needles?
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How Can a Locomotive Pull a Long Train That’s Much Heavier?

By: Rhett Allain β€”
For railroads, it’s all about managing static and kinetic friction.
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Could AI Data Centers Be Moved to Outer Space?

By: Rhett Allain β€”
Massive data centers for generative AI are bad for the Earth. How about launching them into orbit?
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How to Use Physics to Escape an Ice Bowl

By: Rhett Allain β€”
Here are three smart tricks, based on an understanding of frictional forces, to beat a slippery slope.
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How Does the Hive Mind Work in β€˜Pluribus?

By: Rhett Allain β€”
The β€œJoining” seems to connect people via radio waves. Let’s dig into the physics at play.
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Could You Use a Rowboat to Walk on the Seafloor Like Jack Sparrow?

By: Rhett Allain β€”
In Pirates of the Caribbean, Jack and Will use an overturned dinghy to hold air underwater. Madness or brilliance?
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How Do Astronomers Find Planets in Other Solar Systems?

By: Rhett Allain β€”
Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.
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How to Measure the Earth’s Radius With Legos

By: Rhett Allain β€”
With just a friend, a phone, and a few Lego bricks, you can accurately measure the size of our planet.
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Can a Hydroelectric Dam Really Make the Days Longer?

By: Rhett Allain β€”
By shifting water to a higher elevation, the giant Three Gorges Dam caused the Earth to spin more slowly.
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The Physics of the Northern Lights

By: Rhett Allain β€”
The aurora borealis is usually seen near the Arctic, but solar winds and magnetic turbulence are sparking some of the best light shows in centuries throughout the US.
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How Do Metal Detectors Work?

By: Rhett Allain β€”
What sneaky invisible forces enable these instruments to locate buried treasure?
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In Orbit You Have to Slow Down to Speed Up

By: Rhett Allain β€”
Driving a spacecraft around a planet isn’t anything like driving on a planet. A physicist explains orbital navigation.
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How to Get Your Kids Into STEM Even When Its Future Is Uncertain

By: Rhett Allain β€”
Thinking about science and technology in terms of return on investment misses the point. Here’s what kids really need to know.
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5 More Physics Equations Everyone Should Know

By: Rhett Allain β€”
These five equations should be part of your mental toolkit. They might even improve your bowling score.
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How Energy-Generating Sidewalks Work

By: Rhett Allain β€”
These innovative pavings convert the kinetic energy of footsteps into clean electric energy.
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What Is the Magnetic Constant, and Why Does It Matter?

By: Rhett Allain β€”
This persnickety number determines the strength of magnetic fields. It figures in everything from motors and generators to audio speakers. Oh, and without it we’d live in eternal darkness.
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What Is the Electric Constant and Why Should You Care?

By: Rhett Allain β€”
The force between electrical charges is kind of a big dealβ€”without it, the universe would be a primordial soup, and you would not exist. That force is determined by the electric constant.
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AC or DC: Which Is Better?

By: Rhett Allain β€”
Your gadgets run on direct current, but the electricity in your home is alternating current. What’s up with that?
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Einstein Showed That Time Is Relative. But … Why Is It?

By: Rhett Allain β€”
The mind-bending concept of time dilation results from a seemingly harmless assumptionβ€”that the speed of light is the same for all observers.
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Space Elevators Could Totally Workβ€”if Earth Days Were Much Shorter

By: Rhett Allain β€”
What would it take to run a cable from the ISS to Earth? Depends how fast you want the Earth to rotate.
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Are Those Viral β€˜Cooling Blankets’ for Real?

By: Rhett Allain β€”
According to physics, any blanket can cool youβ€”for a few minutes. But a real cooling blanket is possible with phase-change materials.
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Is Using a Stair Machine the Same as Climbing Stairs?

By: Rhett Allain β€”
According to physics, one burns more calories than the otherβ€”and the winner might surprise you.
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The Phony Physics of Star Wars Are a Blast

By: Rhett Allain β€”
Those epic battle scenes in space are awesomeβ€”and physically impossible. But hey, it’s more fun this way!
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This Famous Physics Experiment Shows Why the Government Should Support β€˜Useless’ Science

By: Rhett Allain β€”
Basic research often pays huge dividendsβ€”but that’s not why we do it.
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Torpedo Bats and the Physics of the Sweet Spot

By: Rhett Allain β€”
Baseball season just started, and everyone’s talking about these crazy new bats. Will they change the game?
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Can’t Wrap Your Head Around Pi? Here’s a Cool Visual to Help

By: Rhett Allain β€”
Pi is an irrational number, and like some irrational people it just goes on and on. What is it with this crazy, crucial number?
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Is It Electric or Magnetic? Depends on Where You Stand

By: Rhett Allain β€”
Physics is weird. Especially when you’re dealing with moving reference frames.
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Did a Rock Hit Your Windshield, or Did Your Windshield Hit a Rock?

By: Rhett Allain β€”
Either way, it sucks. But at least there’s some fun physics to ponder while you’re sitting in the repair shop.
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