physics

Chris Knight's avatar

Work with me here.  It’s way too late at night, I can’t sleep and this is the kind of thing I think about at this hour.

Here’s the problem: “Does a shadow have mass, and how much does it weigh if it does?”

Remember how in Peter Pan, when Pete loses his shadow and has to sew it back on when he finally catches it?  That’s how this started (though why I was thinking of Peter Pan so randomly is beyond me).  So if Pan loses his shadow, and it gets away from him and he has to catch it and attach it back to himself, then…

Logically, the shadow must have mass.  Because Pan couldn’t take hold of it if it didn’t have mass.  Except it’s impossible for a shadow to have mass, right?  Right?!

Okay, let’s look at this from the angle of physics.  What is a ...

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In the process of investigating a good idea (said process being one that even Stephen Hawking said could destroy the Earth), those wacky boffins in Switzerland are preparing to generate in excess of 5 trillion volts of juice with their Large Hadron Collider in the next few days.  The result could be the creation of miniatures black holes.  But more than that: it could punch a hole through the normal dimension of space-time and allow a peek into universes other than our own.

Reed Richards, take note!

From the article at IGN.com…

CERN’s Large Hadron Collider (LHC) is being fired up this week after a two-year hiatus and a group of scientists think the results could prove the existence of parallel universes.

A paper published by Dr.s Ahmed Farag Ali, Mir Faizal, and Mohammed M. Khalil in the journal Physics Letters B argues that the second run of the LHC

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Because I don’t want to go to bed with two consecutive posts pertaining to Star Wars staring me in the face (no matter how good, or how nutty)…

A strand of DNA containing the digital data of all of Shakespeare’s sonnets, a half-minute sound clip of Martin Luther King’s “I Have a Dream” speech, a photo and a science paper was announced a few days ago in an article from the journal Nature. So you could pretty much take everything information-wise accumulated during the course of your entire life – photos, videos, music, writings, financial information, medical files, an entire Blu-ray collection of movies and TV shows, computer games and porno – and put it inside a test tube. The DNA used in the research took two weeks to extract data from, but the read times are supposed to get shorter as the tech develops.

And earlier this month ...

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Two researchers at Case Western Reserve University have developed an optical storage system that can hold 1 to 2 terabytes of data on a disc the same size as a standard Blu-ray or DVD! That’s equal to 50 Blu-ray discs. Whereas Blu-ray and DVD discs have always had up to two layers holding the data and the laser refocusing to transition from one to another (the reason why your DVD often pauses for a split second before resuming play) the researchers piled dozens of much teenier layers on top of each other. Same basic technology, but a significant refinement of the materials being used. Potential investors are already looking into bringing the technology to market.

Meanwhile over in Israel, Izhar Gafni – an accomplished engineer and cycling enthusiast – has invented a bicycle made almost entirely out of cardboard. The cycle is very cheap to produce, can be manufactured ...

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Chris Knight's avatar

My mind is reeling from thinking about the applications possible with this…

A sharp-thinking dude named Ramesh Raskar and his team of techies have come up with a way to take photos… at 1,000,000,000,000 frames per second. That’s fast enough to watch an individual packet of photons from a laser moving through a soda bottle and being able to observe how the light particles scatter throughout.

And if you watch the video, you can also see how this technology might find its way into everything from medical imaging to search and rescue.

One thing that comes to mind is that in another decade or so, with enough refinement something like this could be put into a smartphone. The result? Your very own ESPER straight out of Blade Runner.

And then there is the notion of aiming this camera at a house, from across the street or from an ...

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The Swarm, a new roller coaster set to open at an amusement park in London later this month, might have to be toned down a bit. This after crash test dummies put on the coaster had their arms and legs torn off by the horrific G-forces the Swarm generates during ride.

And then there’s this lil’ baby…

The Euthanasia Coaster, designed by Lithuanian engineer Julijonas Urbonas, is a concept (it only exists on paper, thank God) intended to give terminally ill people one last thrill ride.

After a precipitous drop, the coaster would take its passenger through a series of ever-tightening loops that increase the forces on the person’s body, starving him/her of oxygen until death results.

Read more about the Euthanasia Coaster here.

Can you imagine one of these things at Disney World? Well, maybe under Michael Eisner…...

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Crazy buff for wild engineering that I be, this lil’ news item just blows my mind…

A team of researchers from the University of California at Irvine, HRL Laboratories and the California Institute of Technology have come up with a metal lattice material that is the lightest solid yet discovered. As you can see in the photo above, a sample of it can be perched atop a dandelion without damaging it at all. This stuff has less density than the air surrounding it! It’s also much stronger than aerogel: the previous “lightest solid” title holder.

It’s stories like this, friends and neighbors, that still give me a reliable sense of optimism about the future. Who knows what the uses and demand for this stuff will end up being....

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Those clever boffins (as our British brethren love to call such technical folk) at CERN in Switzerland have really made a mess of things this time: they’ve recorded neutrinos traveling faster than the speed of light.

If their determinations hold up, then a whole lotta physics is gonna have to be overhauled. Einstein held that the speed of light in a vacuum was an immutable, impassable barrier, and for most of the past century a lot of our understanding and technology has been based on that. And now… Einstein’s model of relativity stands to be revisited, revised, and possibly amended considerably.

But as with all such announcements, a measure of temperance and consideration is warranted. Jon Butterworth has posted an excellent essay on The Guardian’s website about the ramifications of CERN’s findings, including how it’s possible that neutrinos might not have broken the speed of light.

But if CERN’s ...

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There’s a chap named Richard Handl in southern Sweden who is right curious about things like physics and nuclear chemistry. So he, ummmm… attempted to build a nuclear breeder reactor in his flat’s kitchen.

But it can’t honestly be said that he had any nefarious motives, because Richard has a blog set up chronicling all the steps that he’s taken on his lil’ adventure into the world of fissionable atoms. He even documented a nuclear meltdown in his kitchen’s oven.

Turns out though that splitting atoms at home is the sort of thing that the local constabulary (not to mention the Swedish Radiation Authority) tends to frown upon. Richard Handl was arrested several days ago. He’s since been released from jail but his reactor equipment has been confiscated (and probably buried under several tons of concrete by now), but Handl is determined to continue his research at “the ...

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Wasn’t this the kind of thing that the DHARMA Initiative was playing with on that mysterious Island? We all know how great that turned out, huh?

Some thinkin’ dudes at Cornell University have torn a hole in time itself. The result is a “time cloak” that hides events from being observed by the rest of the universe.

From the article at Gizmodo…

The process relies on similar methods of distorting electromagnetic fields as invisibility cloaks, but it exploits a time-space duality in electromagnetic theory: diffraction and dispersion of light in space are mathematically equivalent. Scientists have used this theory to create a “time-lens [that] can, for example, magnify or compress in time”.

The time cloak takes two of those lenses and arranges them so that one compresses a beam of light while the other decompresses it. That leaves the beam seemingly unchanged, but the diffraction and dispersion actually “cloak”

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