Quoth Wikipedia:
The most baffling part of this experiment comes when only one photon at a time is fired at the barrier with both slits open. The pattern of interference remains the same as can be seen if many photons are emitted one at a time and recorded on the same sheet of photographic film. The clear implication is that something with a wavelike nature passes simultaneously through both slits and interferes with itself -- even though there is only one photon present. (The experiment works with electrons, atoms, and even some molecules too.)
Did it work if they turned the display around and closed their eyes? What if a chimpanzee looked at it? How would a detector + "display device" + consciousness = observation but detector != observation without there being a magical connection between the observer's neurons and the erstwhile photons?
Poor man's ebook reader:
Palm V off ebay (~$20)
Plucker/eReader format books: http://ereader.com/ ($3 to $23 each) http://gutenberg.org/ (free!)
Works remarkably well, not terribly easy on the eyes though.
The point of the article is not extraterrestrial life, but rather life that arose totally separately (on Earth!) from the line of evolution that produced us. The question is, did life appear only once on earth, or multiple times? If it appeared multiple times, then maybe all you need for life is an earth-like setting and a bit of time.
The problem with urlshorteners is twofold:
a) Two points of failure- the website itself, and the redirecting site
b) If the redirecting site goes down, I don't even know the domain of the website the link was to. If "foobar.com" moves the file "meep.txt" to "dumbplace/meep.txt" and I follow a dead link to "foobar.com/meep.txt", at least I can hunt around foobar.com until I find the same file. But I follow a link like "urlwhatever.com/SDTKE$^%@#/" and urlwhatever.com is down, I'm totally at a loss.
I'm sure such wacky security systems are useful, but how many people would be willing to go through that to sign into their Hotmail account? Not a heck of a lot.
Comes up in The Hitchhiker's Guide to the Galaxy too. The people who most want power are the least qualified to actually have it, or something similar.
What?
Base 10: Each digit is worth ten times the one immediately to the right. Ie, 42 means 2*(10^0) + 4*(10^1)
Base 1: Each digit is worth one times the one immediately to the right. 111 means 1*(1^0) + 1*(1^1) + 1*(1^2) (ie, 3 in base 10).
I always liked Cantor's Proof:
http://en.wikipedia.org/wiki/Cantor's_diagonal_argument
As I understand it, an "uncountable" infinity has a higher cardinality that a "countable" one, but there is an infinite number of infinities of higher cardinality than the set of integers.
"# Objects left alone will "fall" toward the densest part of the spacecraft. When they eventually touch the spacecraft, they will stop moving and feel weight." - Wikipedia
Microgravity means, apparently, perceived weightlessness- ie, no contact force pushing against you. You can jump and feel 'microgravity'.
I read somewhere that if the sun were to compress to a black hole tomorrow, we'd still be orbiting. Makes sense, but semi counterintuitive (but I thought all black holes sucked?! etc).
I read through some of the actual reports, and they were slightly apocalyptic, but not overly. Major ramifications for business, internet and phones kludged up but usable-ish, mail delivery sporadic, power outages lasting much longer (ie people who would normally fix downed lines are AWOL). Not the end of the world but could have fairly dire consequences.
'Cept games take a lot of money to produce, beyond the cost of minting CDs. If it costs X number of dollars to develop a game, they have to sell X / ( ( consumer price of copy ) - ( cost of manufacture ) ) to break even. They then have to make enough of a profit to continue turning out games in the future, and satisfy investors (assuming it's a public company).
Given three (non-collinear) points you can construct a circle. Find the perpendicular bisectors of AB and BC (points being A, B and C). The point where they intersect is the center of the circle, the radii are segments from A, B and C to the intersection point.
"In one sense, if observers on earth at that particular time could have looked out and 'seen' the speed with which light was moving toward them out in space, it would have appeared as if it were traveling many times faster than c."
I thought that the speed of light was invariant? Or am I mistaken somewhere?
Slashdot Mirror
How to exhibit good form:
http://www.basicinstructions.net/2007/02/how-to-exhibit-good-form.html
Oh, okay, good. That makes sense.
Did it work if they turned the display around and closed their eyes? What if a chimpanzee looked at it? How would a detector + "display device" + consciousness = observation but detector != observation without there being a magical connection between the observer's neurons and the erstwhile photons?
Assuming the body temperature of a human is 20C, you're off by 40 degrees centigrade. A 60C cow would be 140 degrees Fahrenheit.
Poor man's ebook reader:
Palm V off ebay (~$20)
Plucker/eReader format books:
http://ereader.com/ ($3 to $23 each)
http://gutenberg.org/ (free!)
Works remarkably well, not terribly easy on the eyes though.
The point of the article is not extraterrestrial life, but rather life that arose totally separately (on Earth!) from the line of evolution that produced us. The question is, did life appear only once on earth, or multiple times? If it appeared multiple times, then maybe all you need for life is an earth-like setting and a bit of time.
The problem with urlshorteners is twofold: a) Two points of failure- the website itself, and the redirecting site b) If the redirecting site goes down, I don't even know the domain of the website the link was to. If "foobar.com" moves the file "meep.txt" to "dumbplace/meep.txt" and I follow a dead link to "foobar.com/meep.txt", at least I can hunt around foobar.com until I find the same file. But I follow a link like "urlwhatever.com/SDTKE$^%@#/" and urlwhatever.com is down, I'm totally at a loss.
The question is...
is this website satiric?
http://www.exposingsatanism.org/
I hope to god it is.
"AIDS is caused by a mycoplasma made in the USA"
http://www.exposingsatanism.org/aids.htm
Seriously, what the hell?
Anyone interested in it should read The Brain the Changes Itself by Norman Doige; utterly fascinating and worth reading.
Cosmological formations... like stars? I can observe them plenty.
http://en.wikipedia.org/wiki/Aluminium#Spelling It has quite a history.
Yeah, well, real hackers build themselves.
"A cell phone jammer takes away a person's right to be a loud, annoying, inconsiderate idiot."
No, it just takes away one possible method of being loud and annoying.
I'm sure such wacky security systems are useful, but how many people would be willing to go through that to sign into their Hotmail account? Not a heck of a lot.
Comes up in The Hitchhiker's Guide to the Galaxy too. The people who most want power are the least qualified to actually have it, or something similar.
What? Base 10: Each digit is worth ten times the one immediately to the right. Ie, 42 means 2*(10^0) + 4*(10^1) Base 1: Each digit is worth one times the one immediately to the right. 111 means 1*(1^0) + 1*(1^1) + 1*(1^2) (ie, 3 in base 10).
I always liked Cantor's Proof: http://en.wikipedia.org/wiki/Cantor's_diagonal_argument As I understand it, an "uncountable" infinity has a higher cardinality that a "countable" one, but there is an infinite number of infinities of higher cardinality than the set of integers.
"# Objects left alone will "fall" toward the densest part of the spacecraft. When they eventually touch the spacecraft, they will stop moving and feel weight." - Wikipedia
Microgravity means, apparently, perceived weightlessness- ie, no contact force pushing against you. You can jump and feel 'microgravity'.
I read somewhere that if the sun were to compress to a black hole tomorrow, we'd still be orbiting. Makes sense, but semi counterintuitive (but I thought all black holes sucked?! etc).
I read through some of the actual reports, and they were slightly apocalyptic, but not overly. Major ramifications for business, internet and phones kludged up but usable-ish, mail delivery sporadic, power outages lasting much longer (ie people who would normally fix downed lines are AWOL). Not the end of the world but could have fairly dire consequences.
'Cept games take a lot of money to produce, beyond the cost of minting CDs. If it costs X number of dollars to develop a game, they have to sell X / ( ( consumer price of copy ) - ( cost of manufacture ) ) to break even. They then have to make enough of a profit to continue turning out games in the future, and satisfy investors (assuming it's a public company).
In Soviet Russia, poll options you! ...
Heh, yep, I still find them funny.
In Soviet Russia, "In Soviet Russia" jokes find funny YOU!
Given three (non-collinear) points you can construct a circle. Find the perpendicular bisectors of AB and BC (points being A, B and C). The point where they intersect is the center of the circle, the radii are segments from A, B and C to the intersection point.
"In one sense, if observers on earth at that particular time could have looked out and 'seen' the speed with which light was moving toward them out in space, it would have appeared as if it were traveling many times faster than c." I thought that the speed of light was invariant? Or am I mistaken somewhere?