You would need 2 million of these to clean up what is in the oceans now, and another 100,000 just to get the new waste.
While it contributes modestly in the quantity caught, I would not discount the contribution to publicity and awareness on the subject. And the example of doing something about a problem instead of producing just talk.
Surprising in terms of power requirement.Numbers I read for turbopumps in rockets are 10's or 100's of MW. 50hp=0.04MW. The (admittedly larger) Saturn V F1 engine had 55.000 hp turbopumps (https://en.wikipedia.org/wiki/Rocketdyne_F-1)
It is notable that their engine uses electrically powered pumps for fuel and oxidizer. Most rocket engines use turbo pumps that burn fuel to spin a turbine that is connected to these pumps, which require a respectable amount of power.
https://en.wikipedia.org/wiki/...
Here, they use LiPo batteries to power DC electric pumps (2x 50hp), which reduced complexity and cost. I was quite surprised that this is a feasible approach.
That disk had better be really black. I can imagine light coming up from the sun or earth or the moon giving a nasty background to the image one tries to obtain.Does anyone know how this works? Is the detector somehow focused on the edge of the disk?
No need for skillz, there are websites [flightradar24.com] that track stuff for you.
(At least their coverage for non-US flights is ADS-B based, real time, and collected from private contributing scanners AFAIK, US flights go through FAA)
The brilliant fireball objects tend to have an orbital velocity, ie a significant horizontal component to their speed.
I have not done the math, but if you get out of a balloon with 0 ground speed I can imagine it is less likely to hit fireball speeds before the atmosphere gets denser.
Moreover, ISS orbits with an apogee of 405 km above ground according to Wikipedia, while earths radius has a minimum of 6,357 km according to the same source.
Not sure where the asteroid flew, but unless you mean that ISS orbits ~1 earth radius from the center of the earth, 1 earth radius does not equal the the orbit of the ISS.
No need to take it back. Medical radiation sources can be quite mobile and far from hospitals.
http://environment.newscientist.com/article/dn3150
Get used to black cars trailing you if you happen to have a thyroid problem....
I always felt it was a missed opportunity that metadata never took off on the compact disk. With the (relative) gobs of storage it is trivial to add album and tracktitles to a CD, or even lyrics.
There is CD-text, but somehow it was an afterthought that never took off. It it had been part of the CD spec (as in: add metadata in order to be spec compliant) manufacturers would have been more likely to implement it in their hardware, especially as displays became more advanced.
It's not the case for gas, but have you ever bought an additional key with a transponder chip in it from a dealer? That is how THEY make their money...
Does anyone know how much money Linksys might actually save on the downgrade in RAM on the v5? RAM seems so dirtcheap these days, and we are talking about 4 megs difference right? A dollar difference? (No clue on how pricing on embedded systems works..)
Others noted that Dell has 7200 rpm drives available (using one right now on an Inspiron 9200). However, can someone explain to me why harddrives cannot 'throttle' their rpm's based on the power evironment? I would be happy to run on 4200 when on battery power, and trade some performance for endurance. Also, I wouldn't mind running 10.000 rpm while on AC (drive cooling permitting).
Is there someting inherently unthrottlable in harddrive technology?
There are probably nuggets of truth in the claim, but first of all DNA does not glow green. Perhaps they used fancy synthetic nucleotide analogs with a fluorescent label? Otherwise, they just spiked cheap marker dye into the mix, separate from the DNA. Furthermore, though a laser of the proper frequency (color) can definately make a fluorescent dye glow green, this is hardly something only a laser can do. Any source of (probably blue-ish) light will do. But of course 'blue flashlight' sounds not nearly as cool as 'laser of a specific frequency'.
Maybe people would bother to RTFM if new computers actually contained booklets with useful information. I usually see a packet of FCC declarations, some lawyer talk on warrantees and a flimsy green Win XP booklet that does not provide great insights either.
It shouldn't be that expensive to design these NAS boxes with Gb ethernet on board, instead of the usual 100 Mb I see everywhere. Granted, many places still run at 100, but it sure would be nice to at least have the option of running faster. The RAID could surely fill a Gb pipe....
Slashdot Mirror
You would need 2 million of these to clean up what is in the oceans now, and another 100,000 just to get the new waste.
While it contributes modestly in the quantity caught, I would not discount the contribution to publicity and awareness on the subject. And the example of doing something about a problem instead of producing just talk.
Sorry to say that Nobel prizes are not awarded posthumously..
Surprising in terms of power requirement.Numbers I read for turbopumps in rockets are 10's or 100's of MW. 50hp=0.04MW. The (admittedly larger) Saturn V F1 engine had 55.000 hp turbopumps (https://en.wikipedia.org/wiki/Rocketdyne_F-1)
It is notable that their engine uses electrically powered pumps for fuel and oxidizer. Most rocket engines use turbo pumps that burn fuel to spin a turbine that is connected to these pumps, which require a respectable amount of power. https://en.wikipedia.org/wiki/... Here, they use LiPo batteries to power DC electric pumps (2x 50hp), which reduced complexity and cost. I was quite surprised that this is a feasible approach.
That disk had better be really black. I can imagine light coming up from the sun or earth or the moon giving a nasty background to the image one tries to obtain.Does anyone know how this works? Is the detector somehow focused on the edge of the disk?
No need for skillz, there are websites [flightradar24.com] that track stuff for you. (At least their coverage for non-US flights is ADS-B based, real time, and collected from private contributing scanners AFAIK, US flights go through FAA)
The brilliant fireball objects tend to have an orbital velocity, ie a significant horizontal component to their speed. I have not done the math, but if you get out of a balloon with 0 ground speed I can imagine it is less likely to hit fireball speeds before the atmosphere gets denser.
Moreover, ISS orbits with an apogee of 405 km above ground according to Wikipedia, while earths radius has a minimum of 6,357 km according to the same source. Not sure where the asteroid flew, but unless you mean that ISS orbits ~1 earth radius from the center of the earth, 1 earth radius does not equal the the orbit of the ISS.
And so did Germany at Kalkar http://en.wikipedia.org/wiki/SNR-300
No need to take it back. Medical radiation sources can be quite mobile and far from hospitals. http://environment.newscientist.com/article/dn3150 Get used to black cars trailing you if you happen to have a thyroid problem....
I always felt it was a missed opportunity that metadata never took off on the compact disk. With the (relative) gobs of storage it is trivial to add album and tracktitles to a CD, or even lyrics. There is CD-text, but somehow it was an afterthought that never took off. It it had been part of the CD spec (as in: add metadata in order to be spec compliant) manufacturers would have been more likely to implement it in their hardware, especially as displays became more advanced.
It's not the case for gas, but have you ever bought an additional key with a transponder chip in it from a dealer? That is how THEY make their money...
Does anyone know how much money Linksys might actually save on the downgrade in RAM on the v5? RAM seems so dirtcheap these days, and we are talking about 4 megs difference right? A dollar difference? (No clue on how pricing on embedded systems works..)
Others noted that Dell has 7200 rpm drives available (using one right now on an Inspiron 9200). However, can someone explain to me why harddrives cannot 'throttle' their rpm's based on the power evironment? I would be happy to run on 4200 when on battery power, and trade some performance for endurance. Also, I wouldn't mind running 10.000 rpm while on AC (drive cooling permitting). Is there someting inherently unthrottlable in harddrive technology?
There are probably nuggets of truth in the claim, but first of all DNA does not glow green. Perhaps they used fancy synthetic nucleotide analogs with a fluorescent label? Otherwise, they just spiked cheap marker dye into the mix, separate from the DNA. Furthermore, though a laser of the proper frequency (color) can definately make a fluorescent dye glow green, this is hardly something only a laser can do. Any source of (probably blue-ish) light will do. But of course 'blue flashlight' sounds not nearly as cool as 'laser of a specific frequency'.
Maybe people would bother to RTFM if new computers actually contained booklets with useful information. I usually see a packet of FCC declarations, some lawyer talk on warrantees and a flimsy green Win XP booklet that does not provide great insights either.
It shouldn't be that expensive to design these NAS boxes with Gb ethernet on board, instead of the usual 100 Mb I see everywhere. Granted, many places still run at 100, but it sure would be nice to at least have the option of running faster. The RAID could surely fill a Gb pipe....