Adam Weiner

The Breakdown

Trampoline Basketball

The science of jumping higher


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The Physics of Batman

Our resident Hollywood physicist takes on The Dark Knight and comes up victorious

With The Dark Knight, the action-infused sequel to Batman Begins, dominating the box office in recent weeks, it’s clear that the revitalization of the new Batman franchise is no fantasy. In my opinion, The Dark Knight doesn’t quite come up to the level of its predecessor—its relentless action sequences left me a bit numb after a while, and the constant quick cutting in these scenes gives the audience too much to absorb all at once.

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The Breakdown

That Amazing Devil Gravity

Do heavier things fall faster than lighter ones? In practice? In theory?


Here we have a clip from the excellent movie adaptation of Tom Stoppard's play Rosencrantz and Guildenstern are Dead. In addition to engaging and nuanced performances by Gary Oldman, Tim Roth, Richard Dreyfus, and Iain Glen, the script is full of thought-provoking metaphysical introspection, and some delightful physics introspection as well. It's well worth renting.

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The Breakdown

Apparently Weightless

Why are these astronauts floating around? It's not because of zero gravity


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The Breakdown

Everyday Electromagnetism

How can a magnet move a copper penny?


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The Breakdown

Ancient Bungee Jumping

Bungee jumpers use rubber cords to absorb the force of their fall; in Vanuatu, they use vines


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The Breakdown

Riverjump

When is a daredevil jump not a jump? When it's a flight

When is a daredevil stunt jump actually a "jump" and when does it become a form of ill-advised rocket flight? While we enjoy the dramatic and circus-esque musical soundtrack in the video, let's also appreciate some interesting physics issues relevant to Kenny Powers' unsuccessful jump. I'm not sure how carefully they thought this one through, but I suspect at least they must have recognized that their "souped-up" Lincoln Continental had to be under rocket power not only during the approach and up the ramp but during the jump (flight) as well.

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The Breakdown

Splendid Oscillation

Learn how to destroy expensive glassware with the power of sound


A few weeks back we looked at the phenomenon of resonance with oscillating metronomes. As a follow-up to that meditative and Zen-like video, we've included a crystal-clear demonstration of that favorite old opera singer's trick: shattering a wine glass with resonance.

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The Breakdown

The Breakdown: Can YOU Bend a Bullet?

Physicist Adam Weiner analyzes the magic behind Wanted's mind-bending ballistics


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The Breakdown

An Electric Aviation Experience

When a 747 gets struck by lightning, it might be more shocking for the onlookers than the passengers


If the passengers on that airplane felt their collective hearts stop for a moment, it wasn't due to the electric current from the lightning strike running through their bodies. In fact, airplanes getting struck by lightning is a fairly common occurrence -- more common than you might realize.

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The Real Center of the Earth

Just how realistic is Journey to the Center of the Earth in 3-D?


Hollywood, in its infinite desire to generate easy profits, has decided to do yet another remake of the Jules Verne classic Journey to the Center of the Earth -- this time in 3-D!. As we can see from the trailer, this movie is going to be a special effects extravaganza. Now, while we all know that the entire idea of traveling to the center of the Earth is pure fantasy, and any "science" represented in the movie is not to be taken seriously, we have so much scientific information about the state of the Earth's interior -- much more than Jules Verne ever could know -- that somehow the premise just falls flat.

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The Breakdown

Oscillate Wildly

Metronomes generally keep their own beat -- that's why we love them -- but when several get together, a compromise is hammered out

This charming little video demonstrates the principle of resonant frequency using oscillating metronomes. The mechanical wind-up metronomes used worldwide during the dreaded Saturday piano lesson employ an inverted pendulum to keep even time intervals. The resonant frequency of the pendulum is adjusted by moving the mass up and down. Sliding the mass higher up the rod decreases the resonant frequency of the pendulum by increasing its rotational inertia.

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The Breakdown

International Experiments In Relative Motion

Watch a dedicated Japanese research team fire a ball from a speeding pickup truck — all in the name of science

While the principle is fairly straightforward, this video is such an endearing representation of the concept of relative motion that we had to share it. Who wouldn't appreciate the lengths they went to do the demonstration, not to mention the dramatic atmosphere of the video!

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The Breakdown

Extreme Ski Jumping

Our physics expert explains how these skiers launch themselves off cliffs without getting a scratch—and why you shouldn't try



Skiing off of a 245 foot vertical cliff–looks like fun. It also looks like an insurance disaster in the making. And yet the skiers make it to the other side with nary a scratch. As you doubtless intuitively suspect, they end up ok because of the relatively “soft” snowy landing. As long as the acceleration involved in coming to a stop during impact is not beyond a certain threshold they can survive the fall. According to Newton’s Second Law (F = ma) if you extend the time of impact you reduce the acceleration (a = Δv/Δt) and therefore the force acting on a crazy extreme sport adrenaline junkie. The snow increases both the time and distance over which the collision occurs giving these guys a reasonable chance of walking away alive and without serious internal injuries. So let’s estimate how deep the snow needs to be for a safe landing.

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The Breakdown

Fun With Standing Waves

Our physics expert explains the science behind a trippy party trick


In this video, we see a dramatic demonstration of standing waves patterns, which form when travelling waves constructively and destructively interfere as they pass through one other.

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