I'm trying to create a 3D model of a six-sided area of my garden. I know the lengths of each side. Is it possible to work out the exact angle of each corner?
Here's a link to a rough picture - note that the labels are correct but the sides and angles aren't to scale. [more inside] posted by UltraFleece at 11:26 PM - 8 answers
I ran into some issues of "Scientific American, dated February 23rd, November 30th
1878 and a third February 1st, 1879, all in good shape. I also have one copy of "The Contemporary Review" dated November of 1879, in OK shape. I am curious as to whether they have any collector's value at this point. I have no idea how I came to own them, as these were dated before my father was born. posted by psc1860 at 9:57 AM - 4 answers
Recently, when flying over islands, I've noticed that the waves on the seashore appear to be motionless from cruising altitude. That is, you can see the white foam on the beach but it seems to be frozen in place and not ebbing/returning. Is there a name for this visual effect? posted by orrnyereg at 8:06 PM - 2 answers
I'd really really REALLY love to see the lights tonight and I'm willing to drive a couple hours to get there. I live in Magnolia in Seattle. Where do I go? [more inside] posted by Tevin at 11:03 AM - 12 answers
I'm working on some graphics for an upcoming presentation, and need a way to display some scientific data(scatter plots and bar graphs mostly). What is the next step beyond excel? [more inside] posted by aleatorictelevision at 10:46 AM - 16 answers
Is it going to be possible to see the northern lights in Minneapolis tonight? Will it be similar to a meteor shower, where one needs to get pretty far from the glow of the city lights to enjoy the show? Any tips/suggestions for how to make the best of it, or suggestions of particularly good spots from which to see it? posted by :-) at 8:50 AM - 7 answers
I expect this will turn out to be something akin to a lump of interesting concrete, but please take a gander at this object from a beach near Port Townsend, Washington, and tell me what you think it might be. [more inside] posted by maxwelton at 10:22 PM - 9 answers
I've got a bunch of curves that (I hope) show some common profile over time, although they maybe scaled versions of each other: at any index along in the curve >1, the next point is conditional on all (or some) of the previous.
See this greatly simplified example. [more inside] posted by ed\26h at 7:39 AM - 8 answers
How do dams hurt rivers, exactly? Is that damage built in – that is, are there ways to mitigate it? On the other hand, do a few million people deserve electricity?
Looking for reasoned arguments. Caveat: solar power is reasonable, but I don't see it replacing the Aswan dam in the next few generations. posted by LonnieK at 8:00 PM - 18 answers
So, I'm vacationing in the Cherokee National Forest in Tennessee, and my plant identification skills are useless around all this kudzu, apparently. I know poison ivy has a few distinguishing characteristics, but they all seem to overlap with this annoyingly omnipresent vine. [more inside] posted by ayerarcturus at 9:00 AM - 6 answers
So I've been a spiritual healer for a couple of years now and I wonder what direction to steer it in. Whilst talking to a senior, she mentioned 'psychic surgery', but didn't go into it at all. And as soon as I type 'psychic surgery' into Google, I have a Wikipedia page saying it has been disproved. I know you shouldn't believe every word on Wikipedia, especially with subjects that are going to be relying on information from people with heavily biased views; in the same way that when you mention spiritual healing to some people they call it black magic and do not want to talk about it ever again with you. [more inside] posted by sockpim at 3:48 AM - 21 answers
My friend, who lives in a very safe place in the United States, is unusually scared about ebola. More than really makes any sense. Ebola has appeared sporadically every several years since it was discovered in the 70s. Most years, there are zero cases worldwide. Is it right to say that the current outbreak is likely to be another case of ebola flaring up and then disappearing? [more inside] posted by Sleeper at 11:06 PM - 14 answers