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

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Cool Your Liquor

One glass of Knob Creek (on the right) with ice, one glass (on the left) with whiskey stones.

One glass of Knob Creek (on the right) with ice, one glass (on the left) with whiskey stones.

Last December, a friend gave me an early Christmas present. The package was a perfect cube, and hefty as a rock. “Whiskey stones!” I exclaimed after tearing off the wrapping paper, and promptly gave my friend a hug.

A week later, I was exchanging gifts with my undergrad friends over our annual Christmas brunch. One friend passed me a heavy gift bag. At the bottom of an assemblage of tissue paper sat a cubed box of whiskey stones. “Oh no,” bellowed a third friend, “I got Djuna whiskey stones too!”

My friends know me well.

Whiskey stones are marketed to fellow drinkers, who have indulged in the vice long enough to prefer the burn of whiskey straight. Whereas ice, the traditional cooling agent, melts and dilutes your cocktail, whiskey stones will chill your beverage without watering it down. Although 3 sets of whiskey stones would require an imbibing of alcohol excessive even for me, one box claimed that whiskey stones could also be used to cool coffee and tea for iced beverages.

Delighted by my new alcohol accessory acquisition, I immediately began adding whiskey stones to every beverage best served cold. I had grand plans of a new life enjoying undiluted tastes, secretly laughing while others unknowingly sipped cooled drinks with a weakened flavor. How disappointing it was when, after a few weeks, I swore I would never use my plethora of whiskey stones again. This was not due to any resolution to quit drinking caffeinated beverages or whiskey (you wish, Mom). Rather, it was simply thermodynamics.
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On Mathematics, Mandelbrot, and Beauty

I have a confession to make. I suck at math. I always have, and maybe always will. Despite possessing two engineering degrees and being very close to completing a third, I can’t say that I am comfortable with math. So you might be surprised if you ever drop by my office on a Sunday afternoon. You’ll find me with a broad smile on my face, leafing through a big fat book titled something like ‘Advanced Engineering Mathematics’. I read it because I want to, and I read it because it is fun.

“But math is hard!”, you say. I agree, but great difficulty does not always breed contempt. On the contrary, years of struggling with math have actually pushed me to a level where I have started to see the beauty in it.

To the uninitiated, the very notion of finding beauty in numbers and rigid logic might seem absurd. Nothing could be farther from the truth. Case in point – the pictures below:

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