Best Explanation of Quantum Entanglement

By Anupum Pant

I don’t know a lot about Quantum entanglement, but I still think it is very interesting. So much that a PC game which contained of this concept, immediately landed on the list of my most favourite games. Yet, it sure is a tough thing to get into your head.

Fear not. Associate Professor Andrea Morello of  University of New South Wales (UNSW) is here to explain it to you, in this video which people have started calling – “The best explanation of quantum entanglement so far”. I have to admit it, I am still not sure if I really understand what the professor tries to explain in the best explanation ever video.

In very simple words entanglement works like this. If two objects are entangled with each other, and if you separate them by any distance (even place them at the opposite ends of the universe), then they’d still remain connected very peculiarly. Entangled particles even separated by a massive distance would still be connected – as in, whatever you did to one of the particles would instantly happen to the other particle at the other end.

The instantaneous reflection of changes done on the first particle to the other particle happened faster than light. And Einstein didn’t like that, he called it “spooky action at a distance”. Tom me, this video explains it better…

Chladni Figures

By Anupum Pant

If you take a surface, membrane with a layer of loose particles or certain liquids on it, you’ll see that these particles get arranged in beautiful patterns if the membrane is made to vibrate with varying frequencies.

This phenomenon has been known for a long time now, probably since the time when early human tribes used to put grains of sand on drums made of taut animal skin. Since then Leonardo Da Vinci and Galileo Galilei have been known to have observed this phenomenon by hitting or scraping a surface covered with visible particles and .

Later, with information gleaned from Galileo’s and Leonardo’s notes, in the year 1680, Robert Hooke, English scientist from the Oxford University, devised a simple equipment which demonstrated this effect much clearly. He made a glass plate covered with flour to vibrate with the help of a violin bow. And observed beautiful patterns.

Much later, Ernst Chladni explained these figures using mathematics, spread it all across Europe and made a lasting impression on The French Academy of Sciences. These patterns thus came to be known as Chladni figures.

Brusspup, a YouTube channel known for it’s amazing videos demonstrates these Chladni figures on video.

Today, this study, which makes sound and vibration visible to the naked eye, is called Cymatics.

Making Xrays Using a Sticky Tape

By Anupum Pant

It’s been known since the 1950s that peeling a sticky tape can produce great amounts of energy. But it wasn’t until recently (in the year 2009) a few scientists, who also didn’t quite believe what sticky tapes could do, decided to actually test this phenomenon.

Astoundingly, a simple act of peeling an adhesive tape, can produce enough xrays to make a Geiger counter cry like a cricket.

In fact, the xrays produced by peeling off sticky tape at the rate of about 5cm per second inside an evacuated chamber can produce enough xrays that can expose a photographic film – enabling you to take an xray of your finger – as demonstrated by the researchers in the video below.

The video is fairly old, was uploaded in the year 2009 and I somehow have never stumbled upon it. It seems relevant even today. Thanks to ScienceDump for showing me this today.

Imagine, you can take an xray picture of your finger using a simple adhesive tape (peeling off in vacuum of course). Scientists possibly couldn’t have discovered a cheaper source of producing xrays.

The vacuum is needed to let enough charge to accumulate before the medium in between the charges breaks. Had the peeling been done in atmospheric pressure, it would have just produced visible light (lower energy than xrays). You can even try doing that at home. Go to a dark room and try peeling off a sticky tape quickly. Thanks to the effect called triboluminescence, you’ll be able to see a spark of light coming out!