There just isn't enough energy in a radio frequency photon to mess with the electrons in material to cause this kind of effect. Perhaps if you jack up the power (the number of radio frequency photons per second) hitting your material then you might get it to change. Put it in a microwave oven for instance. By then you're already talking about dangerous levels of radio frequency energy.
Re:My C64 floppy could do that!
on
Scanjet Music
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· Score: 1
You could write a tight loop in Z80 asm that would make a buzz on an AM radio placed close to the ZX80. By varying the loop, you could get different 'notes'. It ate far too much CPU time to be useful for games or anything.
You do realise that they are not claiming 1606 decays is 98% of 200 million pairs, but rather that they expected to see X events and they saw ~98% of what they expected.
The events they want to observe ar so rare that there is less than 2000 of then in >200 million particle interactions.
Why not donate the spare Pentium or whatever. That is more likely to be useful to someone. These days a 486 is pretty much useless except as a firewall, router, fax machine, etc.
The local charity places here will not accept anything less than a P2, it just isn't worth their time and effort.
Pluto was discovered at the the Lowell Observatory in Flagstaff, Arizona. Lowell himself had made a calculation that suggested planet X existed beyond the orbit of neptune, however he died in 1916.
Credit for the actual discovery of Pluto goes to Clyde Tombaugh in 1930. IIRC the planet was named after the greek god of wealth, rather than after Lowell.
Well to scan in a reasonable time, say 10 sec or less you would need much more than the background level of muons from cosmic rays.
Generating muons would require a particle accelerator. This is already pushing the cost beyond that of standard x-ray gear.
Then you have to consider the interaction of muons with the human body. They are penetrating ionizing radiation, and they decay into more fast ionizing particles once they are inside the body. Not something you really want.
Best to stick with metal detectors at airports I think.
'scope, HP do some nice 3GHz bandwidth models = 30k
Vac. Chamber = well, we were quoted 500 for a 6" by 12" alu chamber, so call it 5000 for something of a reasoable size for general work. (ours is specialised)
Microscopes, ebay suggests ~20k for a 10 year old SEM, expect another 5k on optical + decent lenses, etc.
Breadboard = 25, parts from radioshack, no idea, expect them to be as over prices as Tandy was in the uk. Allow 2k.
Decent laser, excimer UV laser pumping a dye laser should cover pretty much anything from UV to IR. Reconditioned excimer (LPX-100) ~15k Dye laser just happen to have a spare we want to sell (FL-3002, to be pumped by the LPX100), so ~3k
Spectrometer, probably not much change out of 20k for a low end good one.
Allow say 2k for chemicals and another 1k for glassware.
Atomic clock, Hmmm hard to say. Set aside 500 in beer money to research this...
Uranium, about 1k for 1gram + other ellemnts from : http://www.birdguides.com/estore4/products/browse. asp
G5 Cluster, 5 machines (dual proc) for say 15k
Cyclotron, cheap. I built one for 200. Wasn't very good though. I suspect if you had the time would could build something reasonable for ~5k
so the total: 124525.00
So double up on everything, get a nice big lab (or by the parents a bigger house and move into a big basement:-) ). You'll still have cash for a good lego set, the support equipment for the lasers, general running costs etc.
11:50 -!- GF|Flu_Hungover changed the topic of #zx to:
'[08:10] [@Saddam_H] brb,someone at the door | [08:16] * [@Saddam_H] (SHussein@wmd.ir) Quit (Ping timeout: 480 seconds)'
Re:What is the difference between MI5 and MI6 anyw
on
Cracking GSM
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· Score: 0
MI5 is the internal intelligence service
MI6 is the external service
Or effects to those words...
Slashdot Mirror
Nah...
I'm giving the lecture.
There just isn't enough energy in a radio frequency photon to mess with the electrons in material to cause this kind of effect. Perhaps if you jack up the power (the number of radio frequency photons per second) hitting your material then you might get it to change. Put it in a microwave oven for instance. By then you're already talking about dangerous levels of radio frequency energy.
Hydrogen and quite a lot of vapourised HCl.
You could write a tight loop in Z80 asm that would make a buzz on an AM radio placed close to the ZX80. By varying the loop, you could get different 'notes'. It ate far too much CPU time to be useful for games or anything.
Just about any USB stick or camera you plug into your computer will also be formated FAT16.
You do realise that they are not claiming 1606 decays is 98% of 200 million pairs, but rather that they expected to see X events and they saw ~98% of what they expected.
The events they want to observe ar so rare that there is less than 2000 of then in >200 million particle interactions.
Why not donate the spare Pentium or whatever. That is more likely to be useful to someone. These days a 486 is pretty much useless except as a firewall, router, fax machine, etc. The local charity places here will not accept anything less than a P2, it just isn't worth their time and effort.
According to the article, the magnitude is around 24. The best the human eye can see is about magnitude 5 given excellent conditions.
:
It is essentially invisible unless you have a decent research telescope.
More info on the astronomical magnitude scale can be found here
http://cfa-www.harvard.edu/icq/MagScale.html
Umm, not quite.
Pluto was discovered at the the Lowell Observatory in Flagstaff, Arizona. Lowell himself had made a calculation that suggested planet X existed beyond the orbit of neptune, however he died in 1916.
Credit for the actual discovery of Pluto goes to Clyde Tombaugh in 1930. IIRC the planet was named after the greek god of wealth, rather than after Lowell.
Yes, I read the article, that is how I knew the date the 'scope was finished.
At the time I posted the comment, there were plenty of posts suggesting this was the discovery scope. I just posted to correct this notion.
This isn't the telescope used to discover pluto. Pluto was discovered in 1930, this telescope wasn't even finished until 1960.
Probably a nice telescope, but it doesn't come with discovery bragging rights.
Well to scan in a reasonable time, say 10 sec or less you would need much more than the background level of muons from cosmic rays.
Generating muons would require a particle accelerator. This is already pushing the cost beyond that of standard x-ray gear.
Then you have to consider the interaction of muons with the human body. They are penetrating ionizing radiation, and they decay into more fast ionizing particles once they are inside the body. Not something you really want.
Best to stick with metal detectors at airports I think.
these prices are UK pounds. Seem to have lost the sign in posting. Not that is makes avast difference to the cost.
let us price this up.
. asp
:-) ). You'll still have cash for a good lego set, the support equipment for the lasers, general running costs etc.
'scope, HP do some nice 3GHz bandwidth models = 30k
Vac. Chamber = well, we were quoted 500 for a 6" by 12" alu chamber, so call it 5000 for something of a reasoable size for general work. (ours is specialised)
Microscopes, ebay suggests ~20k for a 10 year old SEM, expect another 5k on optical + decent lenses, etc.
Breadboard = 25, parts from radioshack, no idea, expect them to be as over prices as Tandy was in the uk. Allow 2k.
Decent laser, excimer UV laser pumping a dye laser should cover pretty much anything from UV to IR. Reconditioned excimer (LPX-100) ~15k Dye laser just happen to have a spare we want to sell (FL-3002, to be pumped by the LPX100), so ~3k
Spectrometer, probably not much change out of 20k for a low end good one.
Allow say 2k for chemicals and another 1k for glassware.
Atomic clock, Hmmm hard to say. Set aside 500 in beer money to research this...
Uranium, about 1k for 1gram + other ellemnts from : http://www.birdguides.com/estore4/products/browse
G5 Cluster, 5 machines (dual proc) for say 15k
Cyclotron, cheap. I built one for 200. Wasn't very good though. I suspect if you had the time would could build something reasonable for ~5k
so the total: 124525.00
So double up on everything, get a nice big lab (or by the parents a bigger house and move into a big basement
[please note very rough figures only]
Fun ways to break your brain analysing magnetic fields.. http://www.amasci.com/elect/mcoils.html
It has been there for ages. Open up a root shell and run knx-hdinstall
Nope. pH 7 is neutral pH 14 is highly basic pH 0 is Strong Acid
How is this off topic? Seems like a good idea to me. Although the OP should have a backup anyway.
You mean it does 'way less' don't you...
Not every planet. There is still nothing at Pluto and will not be until the new horizons mission gets there. http://pluto.jhuapl.edu/
Well he is running RedHat and as well all know linux includes SCO code, so Darl hasn't been left out...
11:50 -!- GF|Flu_Hungover changed the topic of #zx to:
'[08:10] [@Saddam_H] brb,someone at the door | [08:16] * [@Saddam_H] (SHussein@wmd.ir) Quit (Ping timeout: 480 seconds)'
MI5 is the internal intelligence service MI6 is the external service Or effects to those words...
Nope, sorry.