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Search found 4114 matches

by notFritzArgelander
Sun Jan 19, 2020 9:50 pm
Forum: Off-Topic
Topic: Poecilonyms
Replies: 11
Views: 68

Re: Poecilonyms

helicon wrote:
Sun Jan 19, 2020 9:40 pm
Oh, I get it. I looked it up, too. At first I thought it was like Psilocybins.
That fits the Grace Slick quote....
by notFritzArgelander
Sun Jan 19, 2020 7:30 pm
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

Once you get the fraction of the rest mass energy that is extractable by lowering a bucket to the photon sphere there are other problems to be solved. The rope holding the bucket will be ripped apart by tidal forces is one. For instance you can't lower a bucket to Earth any closer than ~10,000 km be...
by notFritzArgelander
Sun Jan 19, 2020 6:52 pm
Forum: Off-Topic
Topic: Poecilonyms
Replies: 11
Views: 68

Re: Poecilonyms

BTW I really like "poecilonym". I had to look it up! :clap: :dance:
by notFritzArgelander
Sun Jan 19, 2020 6:47 pm
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

If we consider bucket infall to the photon sphere rather than the event horizon I’d imagine the bucket KE is quite high but not the lorentz factor or gravitational time dilation... a quite large fraction of the rest energy would be recoverable in a quite finite amount of time... Ah, so we change th...
by notFritzArgelander
Sun Jan 19, 2020 6:34 pm
Forum: Space Exploration
Topic: Musk's vision for Mars and beyond.
Replies: 7
Views: 69

Re: Musk's vision for Mars and beyond.

bladekeeper wrote:
Sun Jan 19, 2020 6:13 pm
Should eventually be enough StarLink sats in orbit to walk to Mars...

Thanks, Elon.
Maybe, just maybe the real purpose of StarLink is to terraform Earth back to Earth by shading out sunlight? :Think: :eek:
:now where is that tin foil hat emoji when i need it?:
by notFritzArgelander
Sun Jan 19, 2020 6:11 pm
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

I thought you said earlier the horizon moves outwards as the matter falls in. I did. But the condition for that needs to be satisfied: the incoming mass needs to be large enough and the radius has to be small enough. Then a new horizon can form. For a small bucket of small mass it's a very long wait.
by notFritzArgelander
Sun Jan 19, 2020 6:05 pm
Forum: Space Exploration
Topic: Musk's vision for Mars and beyond.
Replies: 7
Views: 69

Re: Musk's vision for Mars and beyond.

Not enough gravity on Mars for humans to maintain their health. What say you? Right click the image. Well, I suspect that we could adapt to that. But if not, then perhaps we should consider terraforming Venus. Initially, we'd need to blow off some of its excess atmosphere, of course. And....hmm, I'...
by notFritzArgelander
Sun Jan 19, 2020 5:57 pm
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

If I let the the bucket free-fall and apply the regen braking on the spool just before the bucket reaches the horizon, wouldn't that rest energy equivalent amount of kinetic energy imply the bucket is traveling nearly the speed of light relative to the ring? You're not listening: 1) you'll never ge...
by notFritzArgelander
Sun Jan 19, 2020 5:38 pm
Forum: Space Exploration
Topic: NASA expected to detail costs for fast-track moon landing program next month
Replies: 2
Views: 19

Re: NASA expected to detail costs for fast-track moon landing program next month

From SpaceFlightNow.com: "NASA will release a budget profile with a cost estimate for the agency’s Artemis moon landing program in February in conjunction with the White House’s fiscal year 2021 budget request, according to NASA’s deputy administrator. An official estimate for the total cost for NA...
by notFritzArgelander
Sun Jan 19, 2020 8:35 am
Forum: Solar System
Topic: Mapping_the_cosmic_journey_of_phosphorus
Replies: 4
Views: 54

Re: Mapping_the_cosmic_journey_of_phosphorus

See also https://theskysearchers.com/viewtopic.php?f=74&t=6343 Doh! Pipped at the post again! I need to sharpen my pencil! To be fair, I did get that ESA email last Wednesday! Either way, quite a significant article, ESA version or Phys.org version after the theories proposed last year regarding ne...
by notFritzArgelander
Sun Jan 19, 2020 6:04 am
Forum: Off-Topic
Topic: Amusing but straight to the point.
Replies: 14
Views: 169

Re: Amusing but straight to the point.

bladekeeper wrote:
Sun Jan 19, 2020 2:23 am
:lol:

Talk about ripping someone a new one...
I prefer a dremel tool myself. It leaves a neater finish.
by notFritzArgelander
Sun Jan 19, 2020 5:35 am
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

well here on earth you can get some power by lowering a bucket of water on a rope down a well with a generator attached to the spool... True. if i build a ring around a black hole and lower buckets simultaneously from spools on both sides to keep the ring stationary i think i'll get a bit more than...
by notFritzArgelander
Sun Jan 19, 2020 5:11 am
Forum: Space Exploration
Topic: Musk's vision for Mars and beyond.
Replies: 7
Views: 69

Re: Musk's vision for Mars and beyond.

It's amusing sci-fi. :)
by notFritzArgelander
Sun Jan 19, 2020 4:25 am
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

well here on earth you can get some power by lowering a bucket of water on a rope down a well with a generator attached to the spool... True. if i build a ring around a black hole and lower buckets simultaneously from spools on both sides to keep the ring stationary i think i'll get a bit more than...
by notFritzArgelander
Sun Jan 19, 2020 3:47 am
Forum: Off-Topic
Topic: Amusing but straight to the point.
Replies: 14
Views: 169

Re: Amusing but straight to the point.

bobharmony wrote:
Sun Jan 19, 2020 3:17 am
The workbench guy is going to get the point in the end. And no ear protection - what is he thinking????

Bob
After he bought his neutronium long johns he couldn't afford the ear protection?

https://memory-alpha.fandom.com/wiki/Neutronium
by notFritzArgelander
Sun Jan 19, 2020 3:04 am
Forum: Off-Topic
Topic: Amusing but straight to the point.
Replies: 14
Views: 169

Re: Amusing but straight to the point.

kt4hx wrote:
Sun Jan 19, 2020 2:56 am
That'll certainly put the pucker in your, well you know. :lol:
cheeks? :)
by notFritzArgelander
Sun Jan 19, 2020 2:01 am
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

A flexible tether then... will the hoverer ever detect the other end of the tether drop below the altitude of the spacecraft? Suppose the spacecraft is using a laser beam (blocked by the tether) and a detector that detects the laser if the tether falls away. Over on physicsforums.com in the followi...
by notFritzArgelander
Sun Jan 19, 2020 12:28 am
Forum: Off-Topic
Topic: 10 years ago, the world laughed at private space companies.
Replies: 5
Views: 72

Re: 10 years ago, the world laughed at private space companies.

Business Insider lets you read a snippet and then has a paywall....I've run into before when I have stumbled across the site. Also, whether you can see the article might be location specific - e.g., can't see in the US or Canada but might be accessible from Europe or Africa. It's browser dependent....
by notFritzArgelander
Sun Jan 19, 2020 12:22 am
Forum: Off-Topic
Topic: time dilation vs measured velocity
Replies: 22
Views: 216

Re: time dilation vs measured velocity

A flexible tether then... will the hoverer ever detect the other end of the tether drop below the altitude of the spacecraft? Suppose the spacecraft is using a laser beam (blocked by the tether) and a detector that detects the laser if the tether falls away. Over on physicsforums.com in the followi...
by notFritzArgelander
Sun Jan 19, 2020 12:12 am
Forum: Off-Topic
Topic: Social Security Will Run Out of Money In 2035
Replies: 25
Views: 442

Re: Social Security Will Run Out of Money In 2035

coopman wrote:
Sat Jan 18, 2020 11:55 pm
Climate change is going to kill us all in 11 years anyways, so SS will run out of money 4 years after we're all gone. Not a problem.
:^)
:lol: Well it won't kill us that quickly it will just make the cost of civilized life so high we'll all wish we were dead. ;)

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