Tag: research

A Scientist’s Way of Making Super-Strong iPhone Cases

By Anupum Pant

Bulk Metallic Glasses (BMGs) A.K.A Amorphous metals, give you the goodness of both metals and glasses. They literally are glasses made out of metal. Unlike the most crystalline metals, BMGs are made by cooling certain liquid metals very quickly to lock the disordered glassy structure in place. They aren’t crystalline like your everyday metals and instead have a structure like that of glasses – disordered.

Some of these BMGs have amazing properties. Like super high hardness, about 3 times the hardness of steel is one of the most alluring properties they have.

They’ve been around since the 60s, and mass producing them has always been tough. Until now, BMGs were never used for something as ordinary as a smartphone case. But the recent innovation in manufacturing coming from a Materials scientist at Yale will probably soon bring to the market these new iPhone covers that’d be 50 times harder than plastic, or 10 times harder than Aluminium, and almost three times the hardness of steel.

A Simple and Elegant Cloaking Device

By Anupum Pant

In the year 2011, UTD NanoTech unveiled their carbon nanotube invisibility cloak, making us move one more step closer to realizing a piece of magical cloth which fictional characters often use to turn themselves invisible. And then there was a 3D printed invisibility cloak too.

A few researchers at the University of Rochester have now created their own elegant version of an invisibility cloak. It’s, in principle, a fairly simple optical device which uses just four lenses to cloak objects behind it, keeping the image behind it still visible.

In fact, whatever it does, it does it in 3 dimensions. That means, the viewer looking through the device can actually pan to change the viewing angle and can still see the image of the background, undistorted, as if there were no lenses in between, in real-time. And it is probably the first ever cloaking device to be able to do that.

The device has a blind spot (sort of). In a way that It doesn’t cloak anything that lies in the axis of the lens system. The cloaking area is in the shape of a dough nut. Any part of the object that accidentally enters the axis area becomes visible and conceals the background. The device is simple and cheap enough to be easily scaled to cover greater area, as long as lenses of that size can be made. The video explains it better.

via [Quarks to Quasars]

Nightvision Eye Drops

By Anupum Pant

A deep sea dragonfish, or specifically Malacosteus niger, has a special pigment in its eyes which helps it see better in the deep  dark sea. This pigment, isolated from the eyes of this dragonfish, in the year 1990, was found to be a derivative of Chlorophyll.

The marine biologist Ron Douglas of City University London, who was able to isolate it then, found that the pigment gave this fish an ability to absorb red light. Of course It did seem abnormal to find a chlorophyll derivative inside an animal’s eye. Moreover, the animal had learned to use it to enhance its vision! At that time it was conjectured that the chlorophyll came to the fish through some bacteria, and it somehow found a way to put it to good use.

A couple of years later (in 2004) an ophthalmic scientist at Columbia University Medical Centre read about it and started testing the derivative on other animal’s eyes. Recently, by using it on mice and rabbit eyes, the researcher has been able to enhance their night vision, by enhancing their eye’s ability to absorb red light.

It is highly possible that, in the near future, the pigment could somehow be made safe for human eyes, and be used to enhance their nightvision. Soon a better nightvision could be as easy as ingesting a pill, or using eye drops made out of this derivative. How great would it be for the special ops team! Of course, the U.S. Department of Defence is very interested, and has started funding his research now.

[Read more]

Cambridge University Says Spelling Does Not Matter?

By Anupum Pant

Background

Oh tell me you have never received this old chain mail that had the following paragraph attached in it, and warned you that if you did not forward it to 20 friends, something bad would happen. The passage  –

Aoccdrnig to rscheearch at Cmabrigde uinervtisy, it deosn’t mttaer waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteres are at the rghit pclae. The rset can be a tatol mses and you can sitll raed it wouthit a porbelm. Tihs is bcuseae we do not raed ervey lteter by it slef but the wrod as a wlohe.

The paragraph contains a bunch of letters that are jumbled and you are still able to read it at a normal pace. The passage speaks for itself and says that according to a research study done at Cambridge university, it doesn’t matter in what order the letters in a word are; only the first and last letters need to be in the right place. According to it, everything in the middle can be messed up and you can still easily read it even when it clearly shouldn’t be making any sense.

Questions, Questions!

Certainly blows your mind. But if you start questioning the legitimacy of what the passage claims, you start finding a couple of unanswered questions…

1. It says, “a researcher at Cambridge”. I’d like to throw an open challenge to you – Find me the publication where “the researcher from Cambridge University” published this paragraph (or something similar).

Cambridge does have a Cognition and Brain Sciences Unit where researchers try to figure how brain processes language. But it is clear from this blog-post that people at Cambridge didn’t even know about the  meme that had been circulating all over the internet. At the time when this meme started circulating, in Cambridge, no one was doing research in this area. The prof says:

To my knowledge, there’s no-one in Cambridge UK who is currently doing research on this topic. There may be people in Cambridge, MA, USA who are responsible for this research, but I don’t know of them.

However, in 1999, the effect was originally demonstrated in a letter – [here]

Let’s give it up for the internet trolls, the phenomenon is indeed, intriguing. The researcher tries to figure out the science behind it in the same blog-post. He finds that the effect is same with many other languages. However, it doesn’t seem to work with languages like Finnish and Hebrew.

2. Try reading this:

Bblaaesl pryleas pnmrrioefg srillaimy aeoulltsby dvrseee clbrpmaaoe tteenmrat.

If you need hints, it follows the same rule. The sentence has all the words with first and last letters in place. The letters in the middle are jumbled. According to “the researcher from Cambridge” you should be able to read it easily. Why can’t you? It follows the exactly same rules. Have I made my point?

Why does it work?

Believe it or not, the paragraph actually works. I could read it without any hiccups. At the same time, the one above, which follows the same rules is pretty difficult to read. So what makes the chain mail paragraph so readable? In simple words…

1. There are 69 words in the paragraph. Out of those 69 words, only 37 are jumbled. All the other 32 words are two or three lettered words, which can’t follow the rule. That clears up the structure of sentences.

2. Out of the 37 jumbled words. 12, if I counted correctly, are four letter words that can only have the middle letters swapped. Those are breeze to figure out. That leaves us with just 25 jumbled letters. Given your life-long experience with reading, you can easily predict those if you know most of the other words.

3. Most of these 5 or more lettered words (in 25) are at such places that they don’t even require reading. For instance, your brain can easily figure that “because” will come after “this is”. So it knows, “bcuseae” is actually “because”.  Also, all of these 25 “big” words are easy and familiar ones.

4. The words have not been jumbled a lot.  There are mostly letter swaps, like – porbelm. “Porbelm” has just 2 pair of letters swapped. All those words that have this are pretty easy to figure too. What if it was “pbelorm”? It gets tougher when the central letter is moved from its place. Isn’t it?

But the mission of the makers of the meme passage was to blow your minds in a way that you’d be forced to forward it to your friends. So, they put in easy jumbles.

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Third-Hand Smoke is as Bad as Smoking

By Anupum Pant

Yes, third-hand smoke (THS)! I knew there was second-hand smoke that someone standing near a smoker could inhale and get affected, but never knew there was third-hand smoke. The worst part about it – It is as deadly as smoking a cigarette and effectively affects everybody, irrespective of your proximity to the smoker and his smoke.

So, if you are a non-smoker and the next time someone tells you that their smoking habit is none of your business, you need to tell them, actually it is. The third hand smoke is killing even the non-smokers.

What is third-hand smoke?

Since smoke is nothing but a collection of several tiny particles floating in air, it can get trapped in things like cloth fibers, hair and surfaces. This is the reason you always get that whiff of burning cigarette once a smoker without his cigarette enters a relatively clean room. It stays there, on clothes and objects, for a long time, even after the cigarette has been extinguished and is called third-hand smoke.

Interesting studies

1. Recently, researchers at University of California Riverside decided to study the deadly effects of third-hand smoke. They did the study on mice, exposed them to the kind of exposure normal human beings have to THS. Significant damage to livers and lungs of mice was recorded.

2. Last year, Lara Gundel, a scientist from Lawrence Berkeley National Laboratory, published a study on the effects of THS on Human DNA. Scientists exposed paper strips to cigarette smoke for 258 hours and ventilated air for 35 hours. After this, they exposed the compounds collected in that paper to human cells in petri dishes. It showed that THS can cause harm and mutation in Human DNA cells. It doesn’t stop at that. The potential to cause problems by THS can increase with time.

How it affects you

The thing about third-hand smoke that should worry you the most is, almost everyone comes in contact with it; at home, work, restaurants, bars, shops, etc… It is not like second-hand smoke where you have to inhale the smoke to get affected (equally deadly).

  • Smoke from cigarettes can collect over time on the walls and objects of a room; layer upon layer of carcinogenic compounds!
  • Cars, due to their small sizes and a lot of fibrous material inside can be the worst THS affected areas.
  • Someone smoking in some other room with a fan turned on can send a significant amount of particulates your way. These things can travel far, keep collecting in your room and can potentially affect every body.
  • Children and infants are the worst affected. As they touch objects and put things in their mouths, their tender developing brains can get affected by this more than adults (infants experience about 20 times greater effects)
  • Watch out for smoke rooms. You shouldn’t have a reason to go with your smoker friends in there.
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Using Psychology To Get Back Your Lost Wallet

By Anupum Pant

Do you like to keep a picture of someone you love in your wallet? If the answer is no, you should probably start doing it. But, suppose you have a loved baby, adorable parents, cute puppy and grandparents at home, all of whom you love equally, whose picture do you think would be the best one to keep in your wallet?

Professor Richard Wiseman from University of Hertfordshire, a psychologist, decided to find out. He designed an experiment that would be conducted on the street and would help him figure out the answer to this tough choice.

An experiment on the street

He and his team dropped 240 wallets around the city of Edinburgh. Just to find out, how many of the wallets would be returned by the finders to their respective owners.

Not all the wallets were same. A few displayed picture of a cute baby, others had a picture of a puppy, some had a family picture and others contained an elderly couple’s portrait.

There were some other wallets dropped which contained a receipt suggesting how charitable the owner of that wallet was. These had no pictures in them.

Which one do you think won? Guess and read on…

Results!

Following were the return percentages of wallets:

  • I hope babies don’t get too much cute-aggression out of you because the ones with baby pictures – An incredible 88% of these wallets got returned!
  • Ones with the puppy pictures – 53% were returned.
  • Family portrait wallets – 48% came back.
  • With just 28% return percentage, the ones with the picture of an elderly couple fared the worst among all wallets that had pictures.
  • And only 15% of the wallets that enclosed a receipt and had no pictures were returned to their owners.

Moral (take it with a grain of salt)

If it doesn’t hurt, you could experiment with a cute baby’s picture in your wallet. Since it was tested in just one city, there is a great chance that you could get a different result in your area. If you don’t have one yet, find one on the WWW. The internet is full of them!

Getting back a lost wallet 88 times out of 100 times is big probability. What do you have to lose? A simple picture of a baby will pump up your chances of getting back the wallet by so many percentage points. Go, get one printed right now!

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Yeti Probably Does Exist + Fun Yeti Facts

By Anupum Pant

The search for Yeti, the mythical human-like creature that is assumed to have been living in higher elevations of the Himalayas, has continued for several thousands of years. Back in the days of Alexander the Great, during the 326 BC, when he was in the Indus valley area, he learned from the local people about the Yeti and expressed a desire to see it. The local people failed to bring it to him. Since then, several encounters have been reported and shoddy evidence has been produced, but till date, no one has succeeded in capturing the creature dead, or alive.

Proven Existence of Yeti

An Oxford university Genetics professor, Brian Sykes claims to have found a solid evidence that proves the existence of the Yeti. Moreover, according to him, it is a sub-specie of the brown bear. Specifically, an hybrid of the polar-bear and the brown bear.

After thoroughly studying two of the DNA samples (40 years and 10 years old samples) of hair from a mysterious animal found in Ladakh and Bhutan he said:

I think this bear, which nobody has seen alive… may still be there and may have quite a lot of polar bear in it. It may be some sort of hybrid and if its behavior is different from normal bears, which is what eyewitnesses report, then I think that may well be the source of the mystery and the source of the legend.

Interestingly, the DNA samples were found to be a 100% match with those coming from an ancient Polar bear that walked in Norway about 100,000 years from now. During those times a Polar bear was almost like a brown bear, the brown bear was yet to evolve.

– BBC

 Random Yeti Facts

  • Did you know, Yeti is also knows as the “Abominable Snowman” because the Tibetian word “Metoh-Kangmi” was mis-translated by a famous journalist as “dirty men in snow”.
  • There is a wildlife sanctuary in Bhutan that goes by the name Sakteng Wildlife Sanctuary which is dedicated to preserving the Yeti.
  • During the 1950s, the Nepal government issued formal Yeti-hunting-licenses which costed a massive $650 per Yeti. Otherwise, Yeti brings in a lot of business in Nepal. There are braded hotels and airlines named after the Yeti.(more at NatGeo)
  • Even in the virtual world, Yeti is a pretty popular creature. Games often like to include it as an easter egg. GTA San Andreas players claim that the Yeti can be found on the rocky faces of the Mount Chiliad at daytime. They say it is hard to see because it blends in with the mountain due to its color. GTA V players have encountered a similar beast, the BigFoot.

Making Fresh Water With Apple and Tomato Peels

By Anupum Pant

Water on Earth

It’s Christmas! On this happy day let’s take a minute to look at what the major part of the world is facing today.

The present situation might not look as bad, but the truth is that we are running out of fresh water. To give you an idea about how much water is actually there on earth, this image of the whole world’s water compared with the size of earth is, in my view, the best thing that could prove it to you.

Fresh water in all the lakes and rivers on the whole planet is represented by the tiniest dot.  Yes, there is a third water sphere in the picture. You might have to squint to find it. So, that is the amount of fresh water we have here on earth.

global-water-volume-fresh
Source: http://ga.water.usgs.gov/edu/earthhowmuch.html

War for water: If this image isn’t much of a proof that fresh water is scarce, probably this will do the trick:
Countries consider fresh water a very precious resource. Several countries all around the world are fighting with their neighbors for this blue gold. Two good examples of that – [India starts water war] and [This]

The Point

Today, economically and technologically backward countries require good cost-effective methods to purify water. Scientists are doing a tremendous amount of work in this area and coming out with innovative methods to deal with the problem. Also, it is one great idea for taking up as a science fair project by students. One such recent research regarding this caught my attention.

The fruit peel method

Note: If you are wondering why have I written fruit when we are dealing with a tomato here, this might come as a shock to you that Tomato is actually a fruit. And BTW:

Knowledge is knowing that a tomato is a fruit. Wisdom is knowing that a tomato doesn’t belong in a fruit salad. – Miles Kingston

Mr Ramakrishna Mallampati, under the guidance of Associate Professor Suresh Valiyaveettil of the Department of Chemistry at the NUS Faculty of Science, have discovered a new way of purifying water which is both innovative and cost effective. Moreover, it uses the waste product of a fruit, its peel, for something good. They hope that their new technology will comes as a boon to the people living in areas where a water treatment plant cannot be set up.

According to their research, a tomato’s peel, under certain conditions, can remove dissolved organic and inorganic chemicals, dyes and pesticides. Additionally, an apple’s peel was also found to have these wonderful properties. Apple’s peel loaded with Zirconium were found to be effective in removing phosphate, arsenate, arsenite, and chromate anions. This is the first time ever someone has used to remove two different kinds of pollutants using two different kinds of peels. Notably, all their processes can be scaled up for large scale applications.

I hope that this new discovery will come as a respite to all the poor nations where people die everyday due to the unavailability of drinking water – due to diseases.

Source: http://water.org/water-crisis/water-facts/water/#
Source: http://water.org/water-crisis/water-facts/water/#

For more details – [NUS researchers developed world’s first water treatment techniques using apple and tomato peels]

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Understanding the Impending Helium Crisis

by Anupum Pant

There is too much Helium?

Helium is the second most abundant element in the observable universe, present at about 24% of the total elemental mass. Helium is also the second lightest element. So, 24% by mass is too huge a mass for a single light element. It equates to a measure that is probably millions of times more than what humanity could use up in millions of years. Close to about 12 times the mass of all the heavier elements combined, this element will almost never run out. But, that is only when we talk about the universe. Back in Earth, it is completely a different story.

Helium sources for us

On Earth, Helium is relatively rare. It amounts to only a 0.00052% volume of the earth’s atmosphere. Although 0.00052% is not too less, you also can’t consider it as an abundant element. Moreover, extracting Helium from air is almost 10,000 times more costly than fractional distillation (mentioned in the next paragraph). So, all that Helium in air is nearly useless to us till better methods of extraction are invented.
Thankfully, Helium is also present under the surface of the earth. The source of this kind of deposit is, radioactive decays which take place down there. It mixes with the natural gas and is lost to space, if released into the atmosphere. It is separated from natural gas using a process called fractional distillation – The best process to make Helium.

The largest known underground reserve estimated to contain about 10 billion cubic feet of Helium is a federal reserve (mostly under Texas and Kansas). For years US reserves had been the largest global suppliers of Helium (90%). Even today, these reserves contribute to more than 35% of the total global supply. The price of Helium coming from this source has remained almost unchanged for a long time. While during the same period (10 years) privately held Helium prices have tripled. The gap in prices is increasing every day, creating a big distortion in the market.

Helium Usage

Uses of Helium range from manufacturing smart phone screens (all LCD screens) to optical fibers (Internet cables) to health care (MRI scanners) to scientific research etc. [Uses of Helium]

The Problem

Since Helium has been made artificially cheap due to the Helium privatization act, it is popularly believed to be a cheap gas and is wasted a lot. Instead of using it up for important things, we consume it by filling up party balloons, distort voices and other entertaining activities. In fact, the warning issued by the Nobel Prize winner Robert Richardson that Helium could be depleted within a generation, seems to have had no effect on us. We still continue to waste a lot of Helium, release it into the air and keep losing it forever. Not many realize that it is a non-renewable resource.

We have almost reached a crisis already, but it was temporarily averted by the congress. In the future, after about 6-7 years, when the Federal Reserve stops supplying it (at below-market prices), it could be a big problem. I’m not very optimistic about market adjusting within such a small span either. In under a decade, we’ll probably see smart-phone prices, optical fiber prices and health care (MRI scans etc.) prices shoot up precipitously due to this artificial market distortion, if we do not start using Helium properly.