KiwiJohnno

12 ms·

91.
by KiwiJohnno 5y ago
Inter-satellite switching (user laser links) is already happening with the sats in polar orbits. The sats in polar orbits need this, because there is no base stations on the ground within range - They need to route the signal through sever
92.
by KiwiJohnno 5y ago
>Debris that can stay in orbit for years and years. Just a note on this, The Starlink constellation is in low earth orbit, ~500km. There is still enough atmospheric drag at this altitude that most things will slow down and re-enter &amp
93.
by KiwiJohnno 5y ago
Interestingly, the lead architect of the VMS operating system, Dave Cutler was headhunted by Microsoft in the 80s to work on their new operating system - Windows NT. There are a LOT of similarities between VMS and NT, under the hood. From
94.
by KiwiJohnno 5y ago
In the article Louis says he wants to leave NYC, because the rent is exorbitant and over half of his work is mailed in anyway.
95.
by KiwiJohnno 5y ago
>collision debris is not ejected into orbits that decay significantly slower than the original orbits, just due to how orbital mechanics work. True, but debris can (and has been) thrown into orbits with an apoapsis (high point) much high
96.
by KiwiJohnno 5y ago
Another huge potential market for Starlink will be internet links to ships at sea, or aircraft. When far from land there would be no ground station in range of the satellites overhead, and laser crosslink is the only way to make this work.
97.
by KiwiJohnno 5y ago
The satellites in polar orbits (so far only 10, but they are planning to launch several hundred more this year) do have laser crosslinks. They said all satellites launched next year will have laser crosslinks Source: https://spa
98.
by KiwiJohnno 6y ago
Sorry, I have no idea what you are talking about. I can't see how two objects on dissimilar orbits could possibly be at a standstill relative to each other. I mean, if they are at a standstill relative to each other then their orbits
99.
by KiwiJohnno 6y ago
Sorry, not practical. Intercepting debris requires FAR more delta-v than you may expect. Changing the plane of your orbit is so expensive you just don't do it. Its cheaper to just launch a new satellite in a different plane. For ex
100.
by KiwiJohnno 6y ago
You are totally correct (and yay KSP!) But the danger is the debris that is ejected from a collision at a lower orbit would then collide with debris that is at a higher orbit. The debris from the 2nd collision would have its original peria
101.
by KiwiJohnno 6y ago
The original altitude is not relevant to how the item burns up. Its not the vertical velocity when it hits the atmosphere, its the horizontal velocity. Anything re-entering the atmosphere is subjected to temperatures around 8000 deg. Most
102.
by KiwiJohnno 6y ago
I'd say it would burn up pretty nicely. Its not gonna be one homogenous lump of stuff that holds together on re-entry, its a bunch of smaller "things" (battery cells) bundled up and held together with an external shell. As s
103.
by KiwiJohnno 6y ago
The thing is, the virus already had a name. He just refused to call it by its official name, because that wasn't offensive enough for him.
104.
by KiwiJohnno 6y ago
Actually, current starlink latency is 20-40 msec, which isn't bad compared to DSL or fibre internet. Its usually better than 4g or 5g internet. When starlink sats are fully using laser interconnects then their long-distance (london-NY
105.
by KiwiJohnno 6y ago
Thank you for succinctly putting forward the argument I've been trying to make against this legislation. I'm not saying google is a saint, or even evil but this legislation is just plain wrong. Google have provided an optional fr
106.
by KiwiJohnno 6y ago
Here is another AC story for you: I worked at a bank in the late 90s, on a crunch y2k project that was instigated because AC knowingly installed a non-y2k compliant set of core systems in about 1997, and didn't pass on the vendor'
107.
by KiwiJohnno 6y ago
- Founded three different multi-billion $ companies - Created market for practical, affordable electric cars - First successful car company listed on the stock exchange since Ford - Founded most valuable car company in the world - Made mode
108.
by KiwiJohnno 6y ago
Musk definitely overpromises and doesn't deliver on time... But he usually does deliver what he said, just years late.
109.
by KiwiJohnno 6y ago
To be clear, this is a limitation in some of the very old Win32 APIs, not the kernel itself or the filesystem. The size of the field in these APIs is a fixed maximum length and can't be changed, because that would break everything. If
110.
by KiwiJohnno 6y ago
I read somewhere it had about 15 tonnes of fuel onboard, which isn't trivial
111.
by KiwiJohnno 6y ago
That reminds me of my favourite XML quote: "XML is a lot like violence. If it isn't solving your problem, then you aren't using enough of it"
112.
by KiwiJohnno 6y ago
I never use login with Google, because if one day some automated process decided to suspend my account then I'd also lose access to all other systems I was using Google for authentication. You're basically at the mercy of getting
113.
by KiwiJohnno 6y ago
Thats absolutely nuts, considering they yet to sell any cars, or book ANY revenue. People bashed Tesla for years because they weren't profitable... But at least they had revenue.
114.
by KiwiJohnno 6y ago
Isn't that exactly the problem here though? A big business like, say netflix has enough clout to get what they want. A smaller business or an individual has no option but to get screwed by apple because they have no power. Shouldn&#x2
115.
by KiwiJohnno 6y ago
Excellent choice. After I wore out my first crappy espresso machine I did some research and brought a Rancilio Silvia. That was about 14 years ago, it still gets daily use and hasn't missed a beat.
116.
by KiwiJohnno 6y ago
Ah, ok, sorry I was just trying to be helpful, I wasn't trying to teach you to suck eggs :) But my main point was (that I implied, but I didn't say) is yes, I remember killing off early versions of microsoft security essentials (w
117.
by KiwiJohnno 6y ago
In windows processes have an access control list, just like file permissions. MsMpEng.exe (and other sometimes other critical system processes and antivirus scanners etc) can't be killed because only system has permission, not adminis
118.
by KiwiJohnno 6y ago
Wow, TIL I'm an extremist
119.
by KiwiJohnno 7y ago
If you are reading sequential addresses from RAM then the CPU cache is smart enough to prefetch what you want next, so you are actually hitting cache, not RAM. Remember, the "bandwidth" being referenced is limited not by actual b
120.
by KiwiJohnno 7y ago
I read the article, the patent release was 2016. Yes, its probably going to be helpful to Musk going forward but the company wasn't built on these patents by any stretch of the imagination. By 2016 SpaceX were already landing booster

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