It's sometimes an acceptable shorthand to express a weight in grams, but not when that's the whole point of the story. The _mass_ in grams is (hopefully) not changing. The _weight_ in newtons (or any other dimensionally-correct unit you prefer) is what's changing.
If you're using a device that measures weight and reports it in grams, then you need to re-calibrate it against a known reference mass at each new location.
p.s. don't forget about buoyancy. Accurate measurements need to be done in a vacuum chamber.
The picture in the abstract shows where the iron ion is located. It's not at the very tip of the spike. It's a bit further back, holding a few protein pieces together.
Ostensibly, they allow for more brains behind the card than is possible with a magstripe.
You get that benefit from having a microprocessor on the card, such as a standard "chip card" with metal pads (like a SIM card) that you insert into the reader. Adding all of the RFID nonsense on top of that just makes it less secure.
(I'm aware that "chip+pin" also has known security flaws, but it's better than the alternatives).
It's not quite that simple. Although ethanol has a lower energy content, it has a higher "octane number" and can be used at higher (more efficient) compression ratios than regular gasoline. An engine specifically designed for E85 wouldn't necessarily be much less efficient than one designed for standard gasoline.
However, cellulose-derived butanol is probably a better long-term solution.
There's more to life than just "calories". You also need a supply of amino acids to make new proteins (such as enzymes), and if there aren't enough of these in your diet then the only option is to break down muscles or other important tissues. Fat reserves can be used as energy and can even be used to synthesize glucose for the organs that require it, but there's no way to make amino acids from fat.
Don't forget about CANDU reactors. They use a heavy-water moderator and are able to burn a wide variety of fuels including plutonium, natural uranium, or "spent" fuel from a light-water reactor.
Kids today may not know this, but the former Soviet Union launched a series of radar satellites that were powered by full fission reactors (not just RTGs). At the end of their service life they were designed to eject the reactor cores and boost them into a higher parking orbit.
Most of the time it worked, and those spent reactor cores are still up there with all of the other space debris. However there were a few notable failures, including the 1978 uncontrolled re-entry of Kosmos 954 which sprayed radioactive contamination across a large stretch of northern Canada. It was just luck that it came down there rather than over a more populated section of the planet.
if all went according to plan, the camera would have disintegrated with the lunar module during Earth re-entry.
IIRC the only lunar modules which re-entered the atmosphere were Apollo 9 (test of the LEM in Earth orbit) and the Apollo 13 "lifeboat". The other ones were left to crash into the moon.
"How the fsck is he ever going to find that thing again?"
It helps if the rocket has a GPS receiver and is broadcasting its position over APRS. At 08:23 you can see a short clip of them receiving a position report on what looks like a Kenwood TH-D7A handheld transceiver.
"Warning! Disconnect telephone lines before opening!"
As someone who was once zapped when removing a PCI modem, I can understand this one. Phone lines carry a moderate DC voltage, plus a higher AC voltage when ringing. It is a good idea to disconnect those lines before handling the circuit boards they connect to. It wouldn't be lethal, but it's unpleasant and could cause you to yank your hand away suddenly (right into a pointy heat-sink or razor-sharp edge of sheet metal).
Harper is one of the worst "We're doing it MY FUCKING WAY!" politicians we've had in YEARS, and that's WITH a minority.
I was amused by a recent Conservative attack ad that accused Jack Layton of being "desperate for power" and "blindly ambitious". They've certainly been taking lessons from the US NeoCons - look at your own guy's biggest flaws and then accuse your opponents of it.
Any of the recent Apple ones, like the Time Capsule I'm currently using with a tunnelbroker.net tunnel.
The real question is how many major websites support IPv6? Google (ipv6.google.com), Facebook (www.v6.facebook.com), and not too many others that I can think of. Normal people won't set up a tunnel or ask their ISP about v6 availability unless they have a reason to use it.
Slashdot itself is one site that should have been there years ago, given its techie nature. The last time I checked I could not find any AAAA records for it. Get with the program you slackers.
Tritium is not an alpha emitter. It can't be, because tritium itself is only 75% as massive as an alpha particle. It emits very low-energy beta particles (electrons). Granted, that's still a bad thing if it happens inside one of your cells.
We were offered four classes, to be taken in strict order, Geometry, Algebra, Pre-calculus (I guess the word "trigonometry" doesn't fit in a CHAR(16) column or something stupid like that), Calculus.
Slashdot Mirror
It's sometimes an acceptable shorthand to express a weight in grams, but not when that's the whole point of the story. The _mass_ in grams is (hopefully) not changing. The _weight_ in newtons (or any other dimensionally-correct unit you prefer) is what's changing.
If you're using a device that measures weight and reports it in grams, then you need to re-calibrate it against a known reference mass at each new location.
p.s. don't forget about buoyancy. Accurate measurements need to be done in a vacuum chamber.
Nothing reads like time cube. Nothing. :)
First off, your brain starts to bleed just from the background image
The funniest thing for me is that when you finally scroll down to the bottom of that wall of crazy-text, there's a "next page" link.
The picture in the abstract shows where the iron ion is located. It's not at the very tip of the spike. It's a bit further back, holding a few protein pieces together.
If you really want a kit you can buy an assembled board, de-solder all of the components, and *make* a kit.
Ostensibly, they allow for more brains behind the card than is possible with a magstripe.
You get that benefit from having a microprocessor on the card, such as a standard "chip card" with metal pads (like a SIM card) that you insert into the reader. Adding all of the RFID nonsense on top of that just makes it less secure.
(I'm aware that "chip+pin" also has known security flaws, but it's better than the alternatives).
It's not quite that simple. Although ethanol has a lower energy content, it has a higher "octane number" and can be used at higher (more efficient) compression ratios than regular gasoline. An engine specifically designed for E85 wouldn't necessarily be much less efficient than one designed for standard gasoline.
However, cellulose-derived butanol is probably a better long-term solution.
There's more to life than just "calories". You also need a supply of amino acids to make new proteins (such as enzymes), and if there aren't enough of these in your diet then the only option is to break down muscles or other important tissues. Fat reserves can be used as energy and can even be used to synthesize glucose for the organs that require it, but there's no way to make amino acids from fat.
Don't forget about CANDU reactors. They use a heavy-water moderator and are able to burn a wide variety of fuels including plutonium, natural uranium, or "spent" fuel from a light-water reactor.
Kids today may not know this, but the former Soviet Union launched a series of radar satellites that were powered by full fission reactors (not just RTGs). At the end of their service life they were designed to eject the reactor cores and boost them into a higher parking orbit.
Most of the time it worked, and those spent reactor cores are still up there with all of the other space debris. However there were a few notable failures, including the 1978 uncontrolled re-entry of Kosmos 954 which sprayed radioactive contamination across a large stretch of northern Canada. It was just luck that it came down there rather than over a more populated section of the planet.
The Mint isn't selling this coin, they just made it for funzies.
Anyone wanting to actually buy a huge gold coin will have to settle for a $1 million Canadian Maple Leaf.
If two inches of snow can shut down your town, you're not living in Canada.
Technically, Vancouver and Victoria are still part of Canada.
if all went according to plan, the camera would have disintegrated with the lunar module during Earth re-entry.
IIRC the only lunar modules which re-entered the atmosphere were Apollo 9 (test of the LEM in Earth orbit) and the Apollo 13 "lifeboat". The other ones were left to crash into the moon.
it would be exactly like taking physics I and then trying to create an ideal point mass or a completely frictionless surface...
That reminded me of http://xkcd.com/669/
"How the fsck is he ever going to find that thing again?"
It helps if the rocket has a GPS receiver and is broadcasting its position over APRS. At 08:23 you can see a short clip of them receiving a position report on what looks like a Kenwood TH-D7A handheld transceiver.
"Once the rockets are up, who cares where they come down?
That's not my department," says Wernher von Braun.
Just come up with a standard format for medical information[...]
Here are a couple to get you started:
DICOM
HL7
See also: OpenEMR
Hmm. That got me thinking, anyone have the numbers on the maximum speed an object can reach falling towards the moon?
Same as the escape velocity, which Google says is 2.38 km/s.
I just read the article - this is a scam. A hoax.
No mod points today so I'll just repeat what you said.
Move along folks, nothing to see here, just a sinkhole for your investment dollars.
Uh. Yeah. I think FCC rules prohibit encryption
There's no overall ban on encryption, although some services such as amateur (Ham) radio aren't allowed to use it.
"Place Coffee Here to Keep Warm"
This guy cooked an egg on an AMD CPU.
"Warning! Disconnect telephone lines before opening!"
As someone who was once zapped when removing a PCI modem, I can understand this one. Phone lines carry a moderate DC voltage, plus a higher AC voltage when ringing. It is a good idea to disconnect those lines before handling the circuit boards they connect to. It wouldn't be lethal, but it's unpleasant and could cause you to yank your hand away suddenly (right into a pointy heat-sink or razor-sharp edge of sheet metal).
Harper is one of the worst "We're doing it MY FUCKING WAY!" politicians we've had in YEARS, and that's WITH a minority.
I was amused by a recent Conservative attack ad that accused Jack Layton of being "desperate for power" and "blindly ambitious". They've certainly been taking lessons from the US NeoCons - look at your own guy's biggest flaws and then accuse your opponents of it.
How many home routers support IPv6?
Any of the recent Apple ones, like the Time Capsule I'm currently using with a tunnelbroker.net tunnel.
The real question is how many major websites support IPv6? Google (ipv6.google.com), Facebook (www.v6.facebook.com), and not too many others that I can think of. Normal people won't set up a tunnel or ask their ISP about v6 availability unless they have a reason to use it.
Slashdot itself is one site that should have been there years ago, given its techie nature. The last time I checked I could not find any AAAA records for it. Get with the program you slackers.
Tritium is not an alpha emitter. It can't be, because tritium itself is only 75% as massive as an alpha particle. It emits very low-energy beta particles (electrons). Granted, that's still a bad thing if it happens inside one of your cells.
We were offered four classes, to be taken in strict order, Geometry, Algebra, Pre-calculus (I guess the word "trigonometry" doesn't fit in a CHAR(16) column or something stupid like that), Calculus.
That reminded me of "A Mathematician's Lament" (PDF) by Paul Lockhart.