As well as reading there are some great youtube tutorials around where they can learn most of first year mathematics at their own pace. One of my favourites was http://www.khanacademy.org/
It comes from having a few other pieces of information.
The main one is: Most of the universe is made of hydrogen.
We know some stars fall within a certain range of temperatures, we also know of a few events (such as hydrogen falling into a white dwarf or neutron star) that seem to be almost exactly the same, no matter where they happen, and can give an independent estimate of distance based on brightness.
So the key is, we look for some spectral lines (plural) that are a set fraction apart, or come from a known object. We use that to find the distance, then we can use that information to find other chemicals.
It's a bit hard to explain without a picture, but imagine you see a sequence of bright lines at 1, 2, 5, 7. Then another at 3, 6, 15, 21. (They're usually 335nm, vs 337nm etc, but the distinction is clearer with integers.
If you have enough other information/reasons to believe it to be consistent you can assume the second sequence is 3 times the first and thus is red-shifted by a factor of 3.
As you said/questioned this cannot be done with one frequency, but with many(or a single known source) you can figure out both distance and chemical makeup.
Not that I'm terribly knowledgeable on the subject, but what about Jainism? As far as I'm aware Jainists are all about the 'don't hurt anything, ever' school of thought.
Agreed, the eee I'm typing this on has been drop from 1-1.5 metres multiple times.
Spent a while rattling around various backpacks and had stacks of textbooks on top of it.
It's doing fine.
We already have an item that people use to get at something of similar value.
Some of them even have a crypto key of some kind or other on them electronically.
It's called a set of car keys.
people lose them but it's not as bit an issue as you make out.
_Professional_ little bitches, thank you very much.
Re:Is it possible to do automatic code migration?
on
Python 3.0 Released
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· Score: 1
Yes, there are both the 2to3 and the 3to2 (now somewhat redundant) packages.
2to3 will convert (most) python 2 code to python 3, but there are some limits on its abilities. Large libraries tend not to work very well, especially anything involving other languages (ie. c)
3to2 was for developers going the other way, maintaining python 2 compatibility whilst writing 3.0 code.
Python 3 being out is great, they've fixed a few things that allow bad programming, but does anyone know how long it will take for the libs to start getting ported?
Especially numpy and scipy
There are laws against reselling certain adult products in some areas. Perhaps if they can prove the recipient's health is at risk they'd be able to slip it past ^_^
-_-
That's exactly what the principle says. If the universe were different, either sentient life would exist asking exactly the same question, or the question would not be asked.
I'm sure 3kHz is slow enough for interferometry to work. If we can do it with visible light sound is probably not an issue.
Also most scratchy hissy sounds are around the 16kHz mark and I'm sure there are at least a few overtones in the ultrasonic range (still wavelength of 5-80cm).
I'd imagine echoes from the borders of the table would be involved and other non-trivial bits, so I'd say a drawing surface is plausible (maybe not for detailed sketches but for something like a whiteboard).
Slashdot Mirror
As well as reading there are some great youtube tutorials around where they can learn most of first year mathematics at their own pace.
One of my favourites was http://www.khanacademy.org/
I think I'm on to something here, I'm going to enter that SHA-3 competition
We know some stars fall within a certain range of temperatures, we also know of a few events (such as hydrogen falling into a white dwarf or neutron star) that seem to be almost exactly the same, no matter where they happen, and can give an independent estimate of distance based on brightness.
So the key is, we look for some spectral lines (plural) that are a set fraction apart, or come from a known object. We use that to find the distance, then we can use that information to find other chemicals.
It's a bit hard to explain without a picture, but imagine you see a sequence of bright lines at 1, 2, 5, 7. Then another at 3, 6, 15, 21. (They're usually 335nm, vs 337nm etc, but the distinction is clearer with integers.
If you have enough other information/reasons to believe it to be consistent you can assume the second sequence is 3 times the first and thus is red-shifted by a factor of 3.
As you said/questioned this cannot be done with one frequency, but with many(or a single known source) you can figure out both distance and chemical makeup.
If it's that close to a quasar I don't think it's gunna have much in the way of life. At least no life based on water.
Didn't you notice, he said he was an engineer.
Not that I'm terribly knowledgeable on the subject, but what about Jainism?
As far as I'm aware Jainists are all about the 'don't hurt anything, ever' school of thought.
Agreed, the eee I'm typing this on has been drop from 1-1.5 metres multiple times. Spent a while rattling around various backpacks and had stacks of textbooks on top of it. It's doing fine.
We already have an item that people use to get at something of similar value. Some of them even have a crypto key of some kind or other on them electronically. It's called a set of car keys. people lose them but it's not as bit an issue as you make out.
more information on this would be greatly appreciated, do you have a url for me to start searching and maybe some keywords?
_Professional_ little bitches, thank you very much.
Yes, there are both the 2to3 and the 3to2 (now somewhat redundant) packages. 2to3 will convert (most) python 2 code to python 3, but there are some limits on its abilities. Large libraries tend not to work very well, especially anything involving other languages (ie. c) 3to2 was for developers going the other way, maintaining python 2 compatibility whilst writing 3.0 code.
I had a lot of trouble (and didn't succeed) when trying to install numpy on 3.0rc3, any hints on how you went about it would be appreciated.
Python 3 being out is great, they've fixed a few things that allow bad programming, but does anyone know how long it will take for the libs to start getting ported? Especially numpy and scipy
There are laws against reselling certain adult products in some areas. Perhaps if they can prove the recipient's health is at risk they'd be able to slip it past ^_^
-_- That's exactly what the principle says. If the universe were different, either sentient life would exist asking exactly the same question, or the question would not be asked.
I'm sure 3kHz is slow enough for interferometry to work. If we can do it with visible light sound is probably not an issue. Also most scratchy hissy sounds are around the 16kHz mark and I'm sure there are at least a few overtones in the ultrasonic range (still wavelength of 5-80cm). I'd imagine echoes from the borders of the table would be involved and other non-trivial bits, so I'd say a drawing surface is plausible (maybe not for detailed sketches but for something like a whiteboard).