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On Popular Mechanics: How the 404 Error Created the World Wide Web

Another SNF-workshopped article on the Popular Mechanics blog:

It’s the bane of every web surfer, the internet’s version of fingernails on the chalkboard. Click almost any link that dates back to pre-2005 and brace for the inevitable: “HTTP 404 Not Found.”

Anyone who’s spent time near an internet connection is familiar with the 404 error, a webserver’s way of saying you’ve reached a dead end. What’s less well known is that this very error is what allowed the World Wide Web to exist in the first place.

Read the whole article on the Popular Mechanics website.

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Billion Dollar Meme

Do you remember this piece of shoddy math from when the Powerball made it to more than a billion dollars back in early 2016?

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The creator suggested that instead of only giving the winnings of the lottery to the winners of the lottery, we should divide it evenly to everyone in the country.  If everyone in the U.S. received 4.33 million dollars, poverty in this country certainly would be solved! Continue reading

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Fantastic Beasts and the Science Behind Them

Growing up reading Harry Potter, my favorite parts of the series weren’t the coming of age stories, nor the magical spells, nor the combat and adventure. Instead I obsessed over the mythical science, potions, and creatures. I was captivated by the Harry Potter companion book Fantastic Beasts and Where to Find Them, and wondered, did such fantastic creatures exist in our world?

We tend to think that all parts of the map that were once labelled “Here be dragons” are free from mysteries. True magic may not exist, but there are still beasts at the corners of the world with abilities so magical that scientists have not yet entirely figured them out. Let’s take a look at five entries in a modern-day muggle edition of Newt Scamander’s encyclopedia.

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On SciAm guest blogs: The Unexpected Dangers of Recreational Counting

Magician with cards

Image by Flickr user jin.thai, CC BY 2.0

From an article reviewed by SNF and posted yesterday on Scientific American’s guest blog:

The cleverest card trick I’ve ever seen was performed not by a magician, but by a math professor.

A teaching assistant (let’s call him Nick), acting as magician’s assistant, recruited five student participants. Each student picked a card from a 52-card deck and handed it back to Nick, face up but invisible to Tom, the professor. Nick laid out four of these cards in front of Tom. To our astonishment, Tom immediately identified the missing fifth card.

The professor revealed the trick at the end of class. But when I came back to my dorm, bursting with excitement, my suitemate Benjamin refused to let me explain it; he had to figure this out on his own. He wandered off to his room muttering to himself, blissfully unaware that within twenty-four hours, this puzzle would prove disastrous to his dignity.

Read the whole article on the Scientific American website.

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Pokemon GO-bal Positioning System

Earlier this July, my childhood dream finally came true.  Over the series’ 20 year history, I’ve played more than 30 Pokemon video games, and with each new release I’ve wanted to become a gym leader and to catch ‘em all – a feat I accomplished, once, back in the first game.   Now, as a 28-year old working on a Ph.D., I can finally achieve my dream with the help of Niantic’s latest augmented reality game, Pokemon GO.

 IMG_2016-07-10-13445138 I can find a Pidgey (the Pigeon Pokemon) on a city sidewalk thanks to GPS telling Pokemon GO where I am.  Finding a Goldeen (the Goldfish Pokemon) on the same city street would not make sense.

In Pokemon GO, as I wander around my city, my phone periodically vibrates indicating that I’ve found a Pokemon.  I quickly look at my phone and tap on the Pokemon to enter a battle with it.  The game knows where I am thanks to GPS, the Global Positioning System, and uses that information to show me location-appropriate Pokemon, such as Water-type Pokemon close to rivers and Fire-type Pokemon in deserts.

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The Rogue Geo-engineer

Photo of iron sulfate dumping off the coast of Canada from http://phys.org/news/2012-10-canadian-knew-sea-fertilizing.html

In the summer of 2012, scientist and entrepreneur Russ George sailed purposefully past the coast of Vancouver to the archipelago of Haida Gwaii. There, he proceeded to dump 100 tons of iron sulfate into 10,000 square miles of ocean.

The Haida Indians had given him their blessing. George was the director of the Haida Salmon Restoration Corporation, and the Haida Indians were told that this iron would fertilize the plankton, a valuable feedstock for the native salmon. But George’s intentions went beyond fish farming: adding iron would allow swarms of plankton to blossom, which would draw down massive amounts of carbon dioxide. Russ George claimed to have found a solution for amending the starving salmon population and mitigating the rising concentration of greenhouse gases in one fell swoop.

Most experts, however, were infuriated.

Since then, George has become an infamous case of the dangerous line between ingenuity and recklessness. Supporters argue that such drastic measures may be needed in the future unless we somehow reduce our greenhouse gas emission. But most scientists and policymakers argue that his hasty deed had no scientific merit, and could cause irreversible damage to the ocean environment.

How could an experiment with such good intentions have gone so wrong?
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Spin your phone in the air around these three axes. Can you get a few full turns in without allowing the side that faces you to change?

The Mysterious Phone Tumble

Physics is full of outlandish scenarios where our basic intuitions break down. Quantum mechanics, relativity, nanoparticles…so many phenomena seem counter-intuitive, or even impossible, that it’s almost not surprising when we hear of another in some remote domain. But sometimes, physics surprises can be found right in our hands.

My favorite counter-intuitive motion can be demonstrated with an object that you likely have near you right now: a smartphone. To see it, hold your phone with the screen facing towards you and give it a light toss into the air, spinning it so the screen stays facing towards you. Make sure that if you drop it, it falls in your lap or somewhere soft.* Watch how the phone rotates in the air. Continue reading