You're right on the surface of it. But with a frequency in the 60GHz range and beamforming, we could get that number up to.004 watts.:)
We'll have batteries that last long enough to make this a moot technology before this becomes anywhere near practical. I'm one of the few humans on earth that still uses a not-too-bright flip phone. I charge it once a week whether it needs it or not.
Getting stuff there, i.e. habituate and keeping it supplied, is probably the least difficult part of it. It's a fairly shallow gravity well that puts the costs at not much more (less than twice) that of putting a satellite in Geostationary orbit.
Getting the actual people there (and back) is the costly part. "Stuff" doesn't require four or five levels of fail-safe. "Stuff" doesn't need to take a shit or get sick or argue about politics.
I do see it happening in my lifetime, and I'm pretty fucking old.
I do not see much profit in it however, other than bragging rights.
The companies you mention are the ones likely lobbying against this because it competes with them. This is a good idea. Anybody with the right antenna can get gigabit broadband regardless of where they live (within the latitude range of 55 to -55 so Alaska is still pretty fucked). Said antenna can probably be mass produced for a few dollars; probably built into the lid of a laptop; pure speculation on my part.
That link is the SpaceX plan. Please refer to page 55 for re-entry estimates.
These constellations are destined for orbits that are just outside the thermosphere so the real challenge is keeping them in orbit for the duration their useful life.
1. Batteries 5x better. I think that is the most realistic of the list. Li-air certainly but maybe zinc-air might dwarf that.
2. Mech Muscles. I think that is reasonable but may not be widely deployed.
3. Solar is already pretty damn cheap at $1/watt. Couple with 5x batteries and today's tech is fine.
4. Fusion will be just 50 years away. Modular fission will be all the rage.
5. Probably but it doesn't really matter.
I may have gotten some of the math wrong so feel free to double check me. If I leave all things as they are and just replace the Semi engine with an electric one and only consider the weight of the battery pack and how that impacts performance, it looks like an all electric semi isn't a very good idea. I get that one could change the way a driver takes breaks, etc, but I'm taking it as it is now.
The max legal drive time for a driver is 11 hours.
The Max distance traveled over that 11 hours is 660 mi
150 MJ/gal = actual energy in diesel (google) .5 = Max theoretical efficiency of a diesel engine
75 MJ/gal = energy used over that actual mile (150 x.5)
7 = mpg for a typical fully loaded semi (google)
11 MJ/mi = energy used over a typical mile (75/7)
3.6 MJ/kwh = joules to kwh conversion (google)
So... 3 kwh/mi = kwh required to move the truck one typical mile (11/3.6)
2000 kwh battery pack is needed (3kwh * 660 mi)
85 kwh Model S battery weighs 1200 lbs (google)
15 lbs/kwh = weight of batters (1200/85)
30,000 = weight of 2000kwh battery pack
Since...
The max legal weight of a semi, trailer, cab, cargo, is 80,000lbs. (google)
The batteries will constitute 37% of the total load (30k/80k)
A typical Semi, with an empty trailer attached, is roughly 22,000 lbs, call it 20000 with no engine (google)
That's a 25% of the the max weight.
That doesn't leave much to actually Haul in the Long Haul.
But if we limit the battery pack to 200kwh, charge it though breaking and a smaller diesel engine always running at a constant load at a peak efficiency, I think you'd see a great improvement in overall efficiency.
I can't believe anyone here actually thinks this will ever be deployed. It is so impractical you might as well use space travel to get them there. It would be cheaper too.
Consider that if that tube is breached anywhere along it's length there will be a ~14 PSI wall of air moving at roughly 500 mph through the tube.
Overpressure Physical Effects
20 psi Heavily built concrete buildings are severely damaged or demolished.
10 psi Reinforced concrete buildings are severely damaged or demolished. Most people are killed.
5 psi Most buildings collapse. Injuries are universal, fatalities are widespread.
3 psi Residential structures collapse. Serious injuries are common, fatalities may occur.
1 psi Window glass shatters Light injuries from fragments occur.
http://www.atomicarchive.com/E...
It will utterly obliterate any and every pod in the tube. You'd be hard pressed to find a piece of human meat bigger than a baseball. And that is really just one concern of a dozen.
The man is on the run from a rape accusation. I don't know of many countries that will help you out with that.
Given that the "rape accusation" is utterly fabricated, every country should.
The rape issue was created to give cause to punish him for leaking information that hurt the U.S..
An interesting timeline.
http://www.bbc.com/news/world-...
They reported that three out of the seven dead Apollo astronauts...
I count eight
Alan Shepard
Edgar Mitchel
Jack Swigert
James Irwin
Neil Armstrong
Pete Conrad
Ronald Evans
Stuart Roosa
Pete Conrad died in a motorcycle accident. Is that justification to exclude him? With him, the rate drops to 37%.
Regardless, if we wait a decade or so the sample size will be much higher.
Had this been a pro they'd have sold this log-in. It seems feasible that if it were properly managed and timed, a more realistic "Announcement" could have yielded big bucks in stock trading. My wee brain can't wrap itself around someone that is smart enough to hack the account and too stupid to do anything useful with said hack. I'm going to suppose that said hacker isn't really evil. Hell, just letting the guy know privately that you did it and how you did it would probably be fairly profitable. Let's just call him clever but stupidly shortsighted.
Wave G offers gigabit service to a select group of condos and apartments in Seattle. They [were] the fastest in Seattle according to Speedtest.com http://www.speedtest.net/award...
Here's a list of the buildings and services. https://gowaveg.com/our-buildi...
Nothing for $29 though. Cheapest they offer [that I could find] was $60 for 100Mb and $80 for 1Gb
I suppose if you can afford rent in one of those places you probably don't care about the difference between $29 and $80.
Still, $80 is pretty cheap for 1Gb
Looked at another way, 75 million subscribers * 158.5 hours per subscriber = 12 billion hours or 1.356 million years saved. Divide by the U.S. life expectancy of 78.74 years shows Netflix saved 17,234 lives.
Here is how they figured that out: "First, it took Netflix's recent 75 million subscriber mark. Then, it combined that with a quote from CEO Reed Hastings that said subscribers stream 125 million hours every day.
There is not a 1:1 relationship between subscribers and viewers; husband, wife, 1.25 kids, yada. I suspect--wild ass guess--it is more on the order of ~1:3. So the hours saved per account doesn't change but hours per viewer goes down by ~third. I'm a little surprised it is so few streamed hours per subscriber.
...we would have developed tech to have radio broadcast in non interfering ways
If you know of some technology that achieves that and still allows the utility we currently enjoy, do share.
... folks would have slid into non overlapping slots in the meantime
What does finite resource mean to you? There is already a far, far greater demand for slots than there are available slots. Without regulation every slot becomes unusable.
IPv6? Really? This is 2016: I've had dirt-cheap routers with IPv6 support since forever.
And has actually been used in the home router market since practically never. I would guess that 99.9% of the router buyers out there wouldn't know IPv6 it it bit 'em in the butt. For the remaining.1%, they're not buying this router anyway.
Slashdot Mirror
You're right on the surface of it. But with a frequency in the 60GHz range and beamforming, we could get that number up to .004 watts. :)
We'll have batteries that last long enough to make this a moot technology before this becomes anywhere near practical. I'm one of the few humans on earth that still uses a not-too-bright flip phone. I charge it once a week whether it needs it or not.
Getting stuff there, i.e. habituate and keeping it supplied, is probably the least difficult part of it. It's a fairly shallow gravity well that puts the costs at not much more (less than twice) that of putting a satellite in Geostationary orbit.
Getting the actual people there (and back) is the costly part. "Stuff" doesn't require four or five levels of fail-safe. "Stuff" doesn't need to take a shit or get sick or argue about politics.
I do see it happening in my lifetime, and I'm pretty fucking old.
I do not see much profit in it however, other than bragging rights.
Because rocket fuel is several orders of magnitude cheaper than the last mile of trenched fiber.
The companies you mention are the ones likely lobbying against this because it competes with them. This is a good idea. Anybody with the right antenna can get gigabit broadband regardless of where they live (within the latitude range of 55 to -55 so Alaska is still pretty fucked). Said antenna can probably be mass produced for a few dollars; probably built into the lid of a laptop; pure speculation on my part.
OMG. The hand-wringing that goes on here.
Pick one of those projects and read the technical details; de-orbiting is built right in.
For example:
https://cdn.arstechnica.net/wp...
That link is the SpaceX plan. Please refer to page 55 for re-entry estimates. These constellations are destined for orbits that are just outside the thermosphere so the real challenge is keeping them in orbit for the duration their useful life.
1. Batteries 5x better. I think that is the most realistic of the list. Li-air certainly but maybe zinc-air might dwarf that. 2. Mech Muscles. I think that is reasonable but may not be widely deployed. 3. Solar is already pretty damn cheap at $1/watt. Couple with 5x batteries and today's tech is fine. 4. Fusion will be just 50 years away. Modular fission will be all the rage. 5. Probably but it doesn't really matter.
I may have gotten some of the math wrong so feel free to double check me. If I leave all things as they are and just replace the Semi engine with an electric one and only consider the weight of the battery pack and how that impacts performance, it looks like an all electric semi isn't a very good idea. I get that one could change the way a driver takes breaks, etc, but I'm taking it as it is now.
.5 = Max theoretical efficiency of a diesel engine .5)
...
The max legal drive time for a driver is 11 hours.
The Max distance traveled over that 11 hours is 660 mi
150 MJ/gal = actual energy in diesel (google)
75 MJ/gal = energy used over that actual mile (150 x
7 = mpg for a typical fully loaded semi (google)
11 MJ/mi = energy used over a typical mile (75/7)
3.6 MJ/kwh = joules to kwh conversion (google)
So...
3 kwh/mi = kwh required to move the truck one typical mile (11/3.6)
2000 kwh battery pack is needed (3kwh * 660 mi)
85 kwh Model S battery weighs 1200 lbs (google)
15 lbs/kwh = weight of batters (1200/85)
30,000 = weight of 2000kwh battery pack
Since
The max legal weight of a semi, trailer, cab, cargo, is 80,000lbs. (google)
The batteries will constitute 37% of the total load (30k/80k)
A typical Semi, with an empty trailer attached, is roughly 22,000 lbs, call it 20000 with no engine (google)
That's a 25% of the the max weight.
That doesn't leave much to actually Haul in the Long Haul.
But if we limit the battery pack to 200kwh, charge it though breaking and a smaller diesel engine always running at a constant load at a peak efficiency, I think you'd see a great improvement in overall efficiency.
Overpressure Physical Effects 20 psi Heavily built concrete buildings are severely damaged or demolished. 10 psi Reinforced concrete buildings are severely damaged or demolished. Most people are killed. 5 psi Most buildings collapse. Injuries are universal, fatalities are widespread. 3 psi Residential structures collapse. Serious injuries are common, fatalities may occur. 1 psi Window glass shatters Light injuries from fragments occur.
http://www.atomicarchive.com/E... It will utterly obliterate any and every pod in the tube. You'd be hard pressed to find a piece of human meat bigger than a baseball. And that is really just one concern of a dozen.
The man is on the run from a rape accusation. I don't know of many countries that will help you out with that.
Given that the "rape accusation" is utterly fabricated, every country should. The rape issue was created to give cause to punish him for leaking information that hurt the U.S.. An interesting timeline. http://www.bbc.com/news/world-...
But don't you also have to pay to keep those facilities running? Isn't the 3 cents/kwh just added on top?
Is the cost of this method included in the $0.03/kwh?
The Chinese plan to improve their BeiDou Navigation Satellite System with synchronization signals from the new orbital atomic clock.
I'm thinking a clock accurate to 1 second every 1,000,000 years would more than suffice. Am I wrong?
Brought to you by the Department of Redundancy Department.
They reported that three out of the seven dead Apollo astronauts...
I count eight
Alan Shepard
Edgar Mitchel
Jack Swigert
James Irwin
Neil Armstrong
Pete Conrad
Ronald Evans
Stuart Roosa
Pete Conrad died in a motorcycle accident. Is that justification to exclude him? With him, the rate drops to 37%. Regardless, if we wait a decade or so the sample size will be much higher.
Had this been a pro they'd have sold this log-in. It seems feasible that if it were properly managed and timed, a more realistic "Announcement" could have yielded big bucks in stock trading. My wee brain can't wrap itself around someone that is smart enough to hack the account and too stupid to do anything useful with said hack. I'm going to suppose that said hacker isn't really evil. Hell, just letting the guy know privately that you did it and how you did it would probably be fairly profitable. Let's just call him clever but stupidly shortsighted.
That's a damn good question.
And perhaps the unspoken reason is that there are enough politicians that fear their own vulnerability with back doors. It's a two-way street.
Wave G offers gigabit service to a select group of condos and apartments in Seattle. They [were] the fastest in Seattle according to Speedtest.com
http://www.speedtest.net/award...
Here's a list of the buildings and services. https://gowaveg.com/our-buildi...
Nothing for $29 though. Cheapest they offer [that I could find] was $60 for 100Mb and $80 for 1Gb
I suppose if you can afford rent in one of those places you probably don't care about the difference between $29 and $80.
Still, $80 is pretty cheap for 1Gb
Accessible here http://www.documentarytube.com...
uhh, what's the 'wrong side of the road', you are allowed to park 'on the wrong side of the road' (well at least in our country)..
Parking facing traffic is illegal in the U.S. and Canada.
No, it is ~25% commercials now.
Looked at another way, 75 million subscribers * 158.5 hours per subscriber = 12 billion hours or 1.356 million years saved. Divide by the U.S. life expectancy of 78.74 years shows Netflix saved 17,234 lives.
They should get an award or something.
Here is how they figured that out: "First, it took Netflix's recent 75 million subscriber mark. Then, it combined that with a quote from CEO Reed Hastings that said subscribers stream 125 million hours every day.
There is not a 1:1 relationship between subscribers and viewers; husband, wife, 1.25 kids, yada. I suspect--wild ass guess--it is more on the order of ~1:3. So the hours saved per account doesn't change but hours per viewer goes down by ~third. I'm a little surprised it is so few streamed hours per subscriber.
It is regulated differently. You can even say fuck.
...we would have developed tech to have radio broadcast in non interfering ways
If you know of some technology that achieves that and still allows the utility we currently enjoy, do share.
... folks would have slid into non overlapping slots in the meantime
What does finite resource mean to you? There is already a far, far greater demand for slots than there are available slots. Without regulation every slot becomes unusable.
IPv6? Really? This is 2016: I've had dirt-cheap routers with IPv6 support since forever.
And has actually been used in the home router market since practically never. I would guess that 99.9% of the router buyers out there wouldn't know IPv6 it it bit 'em in the butt. For the remaining .1%, they're not buying this router anyway.