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It's what it sounds like—taking pictures of space. And it's not just for the Hubble Telescope, you can do it, too. David J. Eicher, the editor-in-chief of Astronomy magazine and the author of November's COMETS!, knows a thing or two.
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Thanks for all the fun entries! The past few weeks have been entertaining, to say the least. I saved one of my favorites, and one of the more tricky problems, for last. It’s not the simplest to set up mathematically, but can be solved intuitively. Last week’s problem: Hole in the Sphere A cylindrical hole […]
Read MoreLast chance! You guys rock–it makes me sad that I don’t have enough spare copies to give to the great entries I’ve been getting. I will be back momentarily with this week’s puzzle. First: Four bugs sit 10 inches apart in a square. They move toward each other, forming a logarithmic spiral. How far do […]
Read MoreFor this week’s contest, click here! Hello, Leiter Reports! I’m very glad that I have a couple philosophy degrees, because the conditional logic that you guys threw my way … well, wasn’t too complicated per se, I just don’t see much of it during a regular work day! That wasn’t supposed to rhyme. Anywho, I’m […]
Read MoreSeptember 24, 2008 [Update] This week is over! The winner, and the current contest, will be announced here. Today, we’ll start on the puzzles from Hexaflexagons, Probability Paradoxes, and the Tower of Hanoi. I’ll run three; that’s three more weeks of puzzle goodness. Incidentally, don’t miss Don Albers’ lengthy interview with Gardner, updated weekly. Last […]
Read MoreWelcome back! Go to the current contest here >> The entries are really coming in. Thanks to everyone for entering! Also, check out the interview with Gardner that I’ll be posting over the next few weeks. Last week’s question asked how many planes, re-fueling in midair, are required for one circumnavigation, assuming that a full […]
Read MoreUpdate: This is last week’s puzzle, click here for this week’s puzzle! It’s that time again! I’ve got another problem from Martin Gardner’s Origami, Eleusis, and the Soma Cube, and another copy available to win. We’ll move on to the other of the two first volumes in a couple weeks. Find this week’s puzzle after […]
Read MoreContest #1 Update: This is week #1’s puzzle. Click here for the current one! We’re giving away copies of the first two editions of Martin Gardner’s New Mathematical Library for the next 6 weeks. How to win? Simply solve the puzzle! I’ll pick a winner at random and announce the winner the following Wednesday. The […]
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