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Hacker News front page now, but the titles are honest

dosaygo-studio.github.io

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Re: Hacker News front page now, but the titles are honest

#241

Post by agumonkey »

jvanderbot wrote: post #59

OK, so the "Storing data in the network ... " title made me remember something. If you transmit a message to Mars, say a rover command sequence, and the outgoing buffer is deleted on the sending side (the original code is preserved, but the transmission-encoded sequence doesn't stick around), then that data, for 20-90 minutes, exists nowhere _except_ space. It's just random-looking electrical fluctuations that are pr…

allegedly, this was used long ago. a teacher told us similar stories from his early career in the 80s

made my mind tickle for quite a while

Re: Hacker News front page now, but the titles are honest

#243

Post by aeve890 »

ajcp wrote: post #112

-> Rich developer spends $15k to run a model slightly faster. I love these and I know this is all in good fun, but I feel like this one is a little unfair to Jeff. He's a content creator and he didn't actually buy the rig. If he's rich it's because he creates content like this.

>a little unfair to Jeff

I don't know chief, have you seen how many rpis this guy has?

Re: Hacker News front page now, but the titles are honest

#244

Post by DarmokJalad1701 »

jvanderbot wrote: post #59

OK, so the "Storing data in the network ... " title made me remember something. If you transmit a message to Mars, say a rover command sequence, and the outgoing buffer is deleted on the sending side (the original code is preserved, but the transmission-encoded sequence doesn't stick around), then that data, for 20-90 minutes, exists nowhere _except_ space. It's just random-looking electrical fluctuations that are pr…

During NASA's Deep Space Optical Comms demo (https://www.nasa.gov/mission/deep-space-optical-communicatio...), they transmitted video at 267 Mbps from 16 million kilometers away. That's 1.78 GiB stored in space while in transit (assuming 53.3 seconds light-speed delay).

The furthest they did was 8.3 Mbps at 400 million km which is around ~1.38 GiB in transit.

Re: Hacker News front page now, but the titles are honest

#249

Post by Sesse__ »

PartiallyTyped wrote: post #102
terminalkeys wrote: post #94

Earlier quoted context omitted.

Not a scientist, but I assume the signal would degrade or mutate over time due to space radiation and other radio waves.

It should be same logic we use for repeaters, so it'll be fine.

The logic we typically use for repeaters (EDFA, erbium-doped fiber amplifiers) for long-distance lines amplifies but does not clean noise (so across the oceans, you are very much bound by SNR). And you need one of them every 80 km or so in typical fiber.
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