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# Category Archives: Uncategorized

## How to Talk to Aliens

So, you have met aliens. According to most sci-fi books and movies, the first thing you should do is establish the first contact. This task may seem daunting, but don’t panic: various people, ranging from professional linguists to total idiots, … Continue reading

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## How Many Tribbles?

Assuming I haven’t made a mistake in time zone calculations, this post should go online exactly 50 years after the intrepid crew of USS Enterprise appeared on American screens for the first time. Since then, the adventures of Starfleet officers … Continue reading

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## A Question Most People Get Wrong

Edit: The poll is now over. A bunch of people voted after I wrote this article, but I decided not to redo all calculations because I am lazy. A few days ago I created a Twitter thing called Geeky Polls. … Continue reading

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## Epoch Article, Part 2

This is the second part of a two-part post about measuring time. Part one is here. Last time we discussed our familiar calendar, and the conclusion was that it is really messy. Well, then we should maybe make a better … Continue reading

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## Epoch Article, Part 1

This is the first part of a two-part post about measuring time. Part two is here. In Physics class, we learn how to measure different things. We measure length, area, volume, velocity, force, energy, momentum, etc. using stone age tools … Continue reading

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## Some Boolean Algebra

This is the first of two articles written especially for Ada Byron’s 200th birthday. A Boolean variable is a variable which can take only two values, namely True (1) and False (0). A Boolean function is a function which takes … Continue reading

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## Spivak’s Problem

Long ago, Alexander Spivak posed the following problem: The problem. What is the least number of knights that can be placed on a chessboard such that all empty squares are attacked and none of the knights is attacked? It is … Continue reading

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