This seems to be a more recent report. As of Aug 15, they are only being used for emergency beacons. But it looks as if they might get used for navigation once there have been software upgrades to the satellites and the ground station.
2057 posts • joined 23 May 2011
And the next 7nm laptop processor will be designed by In, er, AM, um, Qualcomm: The 64-bit Arm Snapdragon 8CX
Lawyers are sticklers for meaning
I've never heard of it happening. And it's sounds really improper. But the OED says blackmail is:
The action....of demanding money from someone in return for not revealing compromising information which one has about them.
So for it to be blackmail, she would have to be demanding the money and threatening to "go public" if she didn't receive it.
But she's already gone public and doesn't want the money. So it certainly sounds coercive, and it might have been bribery, but it wasn't blackmail; it's the wrong way round.
Q: If Pesky Pepper had a peek at patient papers, at how many patient papers did Pesky Pepper peek? A: 231
"If the accuracy of atomic clocks is dependent upon gravity (as just demonstrated), we may have a serious problem with the definition of time as that is currently defined using atomic clocks."
There wouldn't be a problem with the definition of time. But we would (and do) have to be careful comparing different clocks.
This actually caused a problem early on and the time signal formed from atomic clocks (TAI) ended up being a smeared average of clocks at different altitudes. I don't know why this mistake was made, since it was well understood that time on the earth's surface would be different to time at it's centre or at the centre of the solar system, and we had (and still have) different timescales to deal with this.
Check your repos... Crypto-coin-stealing code sneaks into fairly popular NPM lib (2m downloads per week)
I haven't looked at this case, but Britain has a long and proud tradition of "gold plating" European directives. So I suspect, if I bothered to follow the link in the article, I'd find we were doing way more than was required. It's a habit which has fed our distrust of the EU and yet it originates in Whitehall.
Re: It's not a compass.
"...that supposedly has a quantum noise limited integration error."
You want measurements accurate down to the Planck scale? Jeez, you guys are hard task masters.
Seriously, I don't know what they say in the video, but you can accumulate an error of hundreds of thousands of atomic diameters and still be accurate to less than a millimetre.
I found a security hole in Steam that gave me every game's license keys and all I got was this... oh nice: $20,000
But how long has IPv4 been around? I'm not sold on IPv6, but any new technology is going to face a bedding in period as we get to grips with it. Nobody will "understand [IPv6] well enough to implement it correctly" until people have been out there and implemented it incorrectly. And that's true of any IPv4 replacement - good, bad, or IPv6.
Re: I expect to be flamed
"Encrypt it with a password/secret that he didn't know."
Okay, let's suppose a prescient designer set up the system so that when an encrypted archive is exported, the password is handed to a nominated second user, and that the two users don't collude while transferring it to the external auditor, then we still have a person (the external auditor) who has access to the data on unaudited media and has the password.
Re: One can only hope
"These 2 telescopes have a shorter focal length then Hubble does so they won't be able to see as far into deep space as Hubble can."
I didn't realise they made telescopes with parsec focal lengths! But I guess that's what makes astronomy so tricky: focusing light from objects so far away.
*Sigh* Stars are "prefocused" (they're point sources at infinity) and so focal length has bugger all effect on how far a telescope can see. It does look as if these scopes won't see as far as Hubble, but that's because they're not designed to be cooled [SOURCE] and so won't be able to separate (infra)red-shifted starlight from thermal noise. However the focal length will give it a much wider field of view than Hubble and it will be able to see fainter objects at much closer distances [ibid].
First, your numbers are out by an order of magnitude. 60mN is 0.06 not 0.006. (Innumerate?) So the product is 108.
Secondly, you don't get to energy by multiplying force and time. The equation you want is Newton's second law, F=Δp/Δt, which we can rewrite as Δp = FΔt to show that a force applied over a period of time gives a change in momentum. Dividing this figure by the mass will calculate the change in velocity, but because you were out by an order of magnitude, it's actually 54cm/s.
Now we can calculate the change in kinetic energy of the satellite: it will be ½m(v+Δv)² - ½mv² which is mvΔv + ½mΔv² . (This should look familiar as it's the Galilean equation for acceleration multiplied by mass. We could have gone that route directly using the "F=ma" form of the second law, but we've got a deltaV so we'll stick with this.)
We'll use your velocity of 9.4E3m/s. And as Δv is tiny we'll discard the Δv² squared term and call the change in energy mvΔv. Which is
2E3 * 9.4E3 * 0.054 = ~1MJ (~50kW) This figure is a bit high because, I think, you've used the launch velocity not the orbital velocity. But it's the right ballpark. This energy is big because most of the transferred megajoule comes from the kinetic energy the plasma particles have from already being in orbit.
Anyway, detailed analysis suggest the impulse supplied will be enough to get an object in 1000km orbit down to 300km orbit, where the atmosphere will do the rest. There's an in-depth analysis here.
So, on the new numeric GCSE grading system, I reckon I'd give you -1.
New theory: The space alien origins of vital bio-blueprints for dinosaurs. And cats. And humans. And everything else
I'm normally critical of the panspermia crowd. But it appears that naturally occurring phosphates aren't in a form suitable for life. Plants and microbes convert it into the form we need. But that leaves the small problem of how phosphate got into the form necessary for life before there was any life. If most of the earth's oceans came from comets and that was contaminated with biology-friendly phosphates, then we're quids in. So this research has merit.
Re: Earthly origins
According to the paper, the phosphates in the earth's crust aren't very water soluble or useful for biology. Plants and microbes overcome this for us but that's no good before there were plants and microbes -- and for life to get going we did need to be swimming in it; every DNA or RNA nucleotide ("letter") needs at least one phosphate anion.
But if comets and meteors are polluted with space-synthesized phosphates of the sort life needs, then perhaps that's where it came from.
Former Apple engineer fights iPhone giant for patent credit and denied cash, says Steve Jobs loved his 'killer ideas'
I presumed the work involved in string reallocation would be the same for both approaches and so excluded the substring step for clearer exposition.
But, because I've not had to code pure C in a long time and there is a certain delight in being able to do this stuff, I think it should be:
char* res = malloc(strlen(str)+1);
return res != NULL ? strcpy(res,str) : NULL
Unless they're numpties (and this is Oracle, so I don't discount that) a regex will be slower and use more memory than a dedicated function.
In C, stripping leading whitespace is something like:
while (isspace(*str)) ++str;
By contrast with
string.replace(/^\s+/,'') the compiler parses the regex into an internal representation, and then, at run time, that's passed to the replace function which evaluates it using an internal engine and splices replacements into matching substrings. It's just no comparison.
Re: Six months?????
Rich, I'd back you against the cowboys, but given the shielding requirements, it may make sense to have that mass as fuel. I could easily imagine a slow outbound trip and then sprinting home, burning the shielding. It's one of those things were someone does have to run the numbers and see what's best.
Re: Possible mitigation?
The CSP will do this for you already. But you have to lock everything down. If, for example, you allow images from anywhere then I can exfiltrate data by including the image:
Re: "no planet clears its orbit"
Before you "tell that to Jupiter", have a word with 884 Priamus, 624 Hektor and 3317 Paris and their opponents 1404 Ajax, 588 Achilles and 1647 Menelaus.
That said, I agree there's a difference between having camps of rocks at your Lagrange points and having NEPTUNE in your orbit. And while focusing on hydrostatic is interesting, plenty of moons are in hydrostatic equilibrium.