Back in the day, before any banks had gotten clueful, we used First Virtual. Each transaction required an email confirmation, which was nice for security, but probably too big a pain in the posterior. It didn't last very long.
Re:Real geeks only please
on
Top Ten Geek Girls
·
· Score: 2, Interesting
I really support the parent on this one. The author shows a deep lack of respect for women, and for geeks. Here's my list, and I left a little room on it for your favorites.
Emmy Noether
Hedy Lamar
Marie Curie
Rosalind Franklin did all the x-ray diffraction heavy lifting for those punks watson and crick
Lise Meitner co-discovered the fission of uranium
Emilie du Chatelet http://www.mathpages.com/home/kmath595/kmath595.ht m Mileva Maric einstien's ubergeek first wife, to whom some credit a lot of special relativity.
Hypatia mathematician, philosopher, martyr. http://www.agnesscott.edu/lriddle/women/hypatia.ht m
Very precise components are fabricated all the time when there's a demand. A lot of amplifier ICs contain several resistors that need to be closely matched to maintain the linearity of the amplification. The phrase I often see is "laser-trimmed", which probably involves measuring the resistence and then making tiny adjustments in a feedback arrangement.
Even if you can't fabricate your own components, you can still do pretty well with the off the shelf radio shack stuff. You can't predict ahead of time what the precise values will be, but you can measure them precisely. With a sufficiently large batch of these, and sufficient time and resources, you could test them until you found one that did the job. Assuming the variability isn't clumpy or something like that.
Time Dilation doesn't actually help much here. You have to accelerate to high speed and deccelerate at the end of the journey. Human beans can handle high accelerations for brief times with few ill affects, but we're talking months here. I suppose if you remain strapped into a squishy chair without having to move around too much then two or three g's might be more reasonable, but I'm pretty sure noone's done the studies.
Anyhoo, I typed "relativistic acceleration" into google, and two clicks later I was here.
It's a little disappointing. A traveller would only get up to 95% of the speed of light before it was time to start deccelerating.
For longer trips, however, the effect would be greater.
The exact numbers escape me, but the vast majority of sea life (above 95% by wieght, I believe) exists within 100 meters of the surface. These numbers could be off, but my point still holds. The whole point in storing CO2 is to sequester it, so insofar as it remains sequestered, ocean acidity will only be affected at these deep levels.
How ocean life that lives at or visits these depths is affected is a question I'd like to hear addressed, but the horrors you are expecting are not going to be a concern.
Yeah, and if you live in an area with more than one population center, such as: Minneapolis/St Paul, Fargo/Moorhead, Duluth/Superior, Kansis City KS/MO, etc, each city gets a group. This is fine for big meetups, but all the ones I use are tiny, and pooling them together would actually enable some reasonable attendance from time to time.
Of course, I could just be a loser for having such unpopular interests (Python, anyone?)
The prototype has a density of 16 sensors per square centimeter, far from the 1,500 of our fingertips.
Most of that is redundant. I'd like to see you sense 1500 independent locations within a sq cm of your fingertips. I bet you'd have difficulty with 16. Where's that number from anyway? I wouldn't be surprised if its wrong anyway. Nerve endings, maybe, but not all of those are for touch, some are for temperature and probably other things.
Still, some of those extra pressure senstive nerve endings would be good for detecting subtle shifts of whatever is being touched, or texture, etc. But its nothing like 1500 a sq cm.
I've always desired a todo manager that included timestamps for when the entry was made/resolved, and possibly with the ability to nest some notes, or to classify the entry. yeah, it sounds like bug/issue tracking, but I have them in a file called todo. I think there is some overlap here, so hopefully its not too off-topic.
I haven't tried using bugzilla, it looks a bit intimidating at first glance, but I could be wrong about that. Has anyone used software that has these features, and is simple to use?
Its ok. Spelling ability isn't necessarily linked to intelligence, or the authority to criticize that of others. Besides, it was really a "typing error" right?
So the election officials panic at the problems in 2000 and run out and the newest, slickest gadgets they can find. Somebody should give them some valium, have them count to ten, and show them how NASA does procurement.
You don't use untested technology for something this important. The perception is that all the old voting systems are inadaquate. What a load of bunk. In the Twin Cities, we use optical scanners, which are fast, easy to use, and hard to screw up. The scanning machine can even complain instantly if you do something silly like vote for two condidates in the same race. I'll stop rambling now.
Get over yourself and RTFA. Whitehats and blackhats each got eight represenatives listed, and the distinction was mentioned several times, even using the term "cracker." I'd even say that Robert Morris is a grey case, tipping things to our side. They all seemed to be possessed of great technical ability, which is the primary requirement. Well, maybe not ESR:)
They actually did a pretty admirable job, consiering all the UFO/psychic/unsolved mystery crap on those commercial "educational" stations.
First of all, this sound is based on observations of the microwave background radiation, which didn't come into existence until 300,000 years after the big bang. You will note that the article states "when it [the universe] was just 18 million light years across" Imagine beating a drum that big, and you'll see why the pitch is so low. So the big bang may or may not have been a "bang" but 300,000 years later, the sound made was a hum.
Really, the relevant signal to listen to is the background signal of gravitational waves. These actually correspond rather directly to (faint) sound waves, since they induce mechanical disturbances as they pass through matter. By now, of course, most of these will have stretched to the dimensions of the universe, and be more or less undetectable, even in principle. Some theories predict the existence of higher frequency waves going back to the first moments of the big bang. We can look forward to detecting some higher frequency waves in the next five to ten years, from the various interferometers coming online. This is serious science, and could provide insights into not only the origins of the universe, but also supernovae, and the dynamics of black holes and neutron stars. Not to mention curiosities that may occur unheralded. Something akin to the advent of radio astronomy may be in store for us.
There's also (presumably) a neutrino background, from about one second after the big bang. This will be very hard to detect, until we build a big sister to AMANDA covering icy orb, perhaps ganymede:) Some folks seem to be trying to detect it indirectly via the microwave background.
Physicists are entitled to a little fun now and then, anyway. It also helps to bring cosmology a little closer to the general public. It certainly isn't as if this researcher had to get a peer reviewed grant of many thousands of dollars to produce such "trivial" results: he simply did some starightforward processing on data that was already available, quite possibly in his spare time on his own computer. Oh, and I would definitely classify this as more useful/pertinent then that (admittedly a bit silly) "color of the universe stuff"!
It is not the case that "any" sound can be created, or that there is no relationship to the original, when scaling by 100,000. Many (most) relationships are preserved in this sort of operation. Indeed, a familiar example would be to speed up or slow down normal speech; it remains understandable.
Science starts with the presumption of ignorance, and then proceeds to discover what the universe can tell us about itself. Many slashdotters could take a lesson from this.
The two most abundant things in the universe are hydrogen and stupidity.
Harlan Ellison
Slashdot Mirror
Back in the day, before any banks had gotten clueful, we used First Virtual. Each transaction required an email confirmation, which was nice for security, but probably too big a pain in the posterior. It didn't last very long.
I really support the parent on this one. The author shows a deep lack of respect for women, and for geeks. Here's my list, and I left a little room on it for your favorites.
t m
t m
Emmy Noether
Hedy Lamar
Marie Curie
Rosalind Franklin did all the x-ray diffraction heavy lifting for those punks watson and crick
Lise Meitner co-discovered the fission of uranium
Emilie du Chatelet http://www.mathpages.com/home/kmath595/kmath595.h
Mileva Maric einstien's ubergeek first wife, to whom some credit a lot of special relativity.
Hypatia mathematician, philosopher, martyr. http://www.agnesscott.edu/lriddle/women/hypatia.h
All should be on wikipedia.
You go girls!
A chick? A chick embryo at that? Not exactly impressive, but baby steps, eh?
*ducks*
Very precise components are fabricated all the time when there's a demand. A lot of amplifier ICs contain several resistors that need to be closely matched to maintain the linearity of the amplification. The phrase I often see is "laser-trimmed", which probably involves measuring the resistence and then making tiny adjustments in a feedback arrangement.
Even if you can't fabricate your own components, you can still do pretty well with the off the shelf radio shack stuff. You can't predict ahead of time what the precise values will be, but you can measure them precisely. With a sufficiently large batch of these, and sufficient time and resources, you could test them until you found one that did the job. Assuming the variability isn't clumpy or something like that.
In other words, a faithful representation of the general population?
Time Dilation doesn't actually help much here. You have to accelerate to high speed and deccelerate at the end of the journey. Human beans can handle high accelerations for brief times with few ill affects, but we're talking months here. I suppose if you remain strapped into a squishy chair without having to move around too much then two or three g's might be more reasonable, but I'm pretty sure noone's done the studies.
Anyhoo, I typed "relativistic acceleration" into google, and two clicks later I was here.
It's a little disappointing. A traveller would only get up to 95% of the speed of light before it was time to start deccelerating. For longer trips, however, the effect would be greater.
The exact numbers escape me, but the vast majority of sea life (above 95% by wieght, I believe) exists within 100 meters of the surface. These numbers could be off, but my point still holds. The whole point in storing CO2 is to sequester it, so insofar as it remains sequestered, ocean acidity will only be affected at these deep levels.
How ocean life that lives at or visits these depths is affected is a question I'd like to hear addressed, but the horrors you are expecting are not going to be a concern.
Yeah, and if you live in an area with more than one population center, such as: Minneapolis/St Paul, Fargo/Moorhead, Duluth/Superior, Kansis City KS/MO, etc, each city gets a group. This is fine for big meetups, but all the ones I use are tiny, and pooling them together would actually enable some reasonable attendance from time to time.
Of course, I could just be a loser for having such unpopular interests (Python, anyone?)
The prototype has a density of 16 sensors per square centimeter, far from the 1,500 of our fingertips.
Most of that is redundant. I'd like to see you sense 1500 independent locations within a sq cm of your fingertips. I bet you'd have difficulty with 16. Where's that number from anyway? I wouldn't be surprised if its wrong anyway. Nerve endings, maybe, but not all of those are for touch, some are for temperature and probably other things.
Still, some of those extra pressure senstive nerve endings would be good for detecting subtle shifts of whatever is being touched, or texture, etc. But its nothing like 1500 a sq cm.
I've always desired a todo manager that included timestamps for when the entry was made/resolved, and possibly with the ability to nest some notes, or to classify the entry. yeah, it sounds like bug/issue tracking, but I have them in a file called todo. I think there is some overlap here, so hopefully its not too off-topic.
I haven't tried using bugzilla, it looks a bit intimidating at first glance, but I could be wrong about that. Has anyone used software that has these features, and is simple to use?
Umm, that's spelled "intelligence"
Its ok. Spelling ability isn't necessarily linked to intelligence, or the authority to criticize that of others. Besides, it was really a "typing error" right?
Uhh, should that be "its" or it's"??
So the election officials panic at the problems in 2000 and run out and the newest, slickest gadgets they can find. Somebody should give them some valium, have them count to ten, and show them how NASA does procurement.
You don't use untested technology for something this important. The perception is that all the old voting systems are inadaquate. What a load of bunk. In the Twin Cities, we use optical scanners, which are fast, easy to use, and hard to screw up. The scanning machine can even complain instantly if you do something silly like vote for two condidates in the same race. I'll stop rambling now.
Get over yourself and RTFA. Whitehats and blackhats each got eight represenatives listed, and the distinction was mentioned several times, even using the term "cracker." I'd even say that Robert Morris is a grey case, tipping things to our side. They all seemed to be possessed of great technical ability, which is the primary requirement. Well, maybe not ESR :)
They actually did a pretty admirable job, consiering all the UFO/psychic/unsolved mystery crap on those commercial "educational" stations.
First of all, this sound is based on observations of the microwave background radiation, which didn't come into existence until 300,000 years after the big bang. You will note that the article states "when it [the universe] was just 18 million light years across" Imagine beating a drum that big, and you'll see why the pitch is so low. So the big bang may or may not have been a "bang" but 300,000 years later, the sound made was a hum.
:) Some folks seem to be trying to detect it indirectly via the microwave background.
Really, the relevant signal to listen to is the background signal of gravitational waves. These actually correspond rather directly to (faint) sound waves, since they induce mechanical disturbances as they pass through matter. By now, of course, most of these will have stretched to the dimensions of the universe, and be more or less undetectable, even in principle. Some theories predict the existence of higher frequency waves going back to the first moments of the big bang. We can look forward to detecting some higher frequency waves in the next five to ten years, from the various interferometers coming online. This is serious science, and could provide insights into not only the origins of the universe, but also supernovae, and the dynamics of black holes and neutron stars. Not to mention curiosities that may occur unheralded. Something akin to the advent of radio astronomy may be in store for us.
There's also (presumably) a neutrino background, from about one second after the big bang. This will be very hard to detect, until we build a big sister to AMANDA covering icy orb, perhaps ganymede
Physicists are entitled to a little fun now and then, anyway. It also helps to bring cosmology a little closer to the general public. It certainly isn't as if this researcher had to get a peer reviewed grant of many thousands of dollars to produce such "trivial" results: he simply did some starightforward processing on data that was already available, quite possibly in his spare time on his own computer. Oh, and I would definitely classify this as more useful/pertinent then that (admittedly a bit silly) "color of the universe stuff"!
It is not the case that "any" sound can be created, or that there is no relationship to the original, when scaling by 100,000. Many (most) relationships are preserved in this sort of operation. Indeed, a familiar example would be to speed up or slow down normal speech; it remains understandable.
Science starts with the presumption of ignorance, and then proceeds to discover what the universe can tell us about itself. Many slashdotters could take a lesson from this.
The two most abundant things in the universe are hydrogen and stupidity.
Harlan Ellison