The symbols used in the first writing had been used on tokens for trading since 10000 yrs ago or so. The first collection of these symbols, were on bula. I'm going with traders started things off with contracts.
Cloning? To what end? Why did they die out in the first place?.
Why did the Europeans who began colonising Greenland die out, leaving the natives? Is this proof the natives were/are superior and Europeans may as well leave this world?
The assumption was a steady 55 mph, so is certainly the maximum possible range, so I'm sure the actual range would be less if you were driving in the city.
To get an idea, the Wiki page for range in a Nissan Leaf is: 55mph/70miles, 38 mph/138miles, city traffic/105miles.
So no, 55mph is an inefficient speed for an electric car.
"For example, a planet with 5 times Earth’s mass but twice the radius would have a surface gravity only 20% higher than Earth; if you weighed 150 pounds here you’d weigh 180 pounds there."
Well, volume increase by the cube, and gravity is 1/r^2. So, for the same materials of Earth, a planet with double the radius would have 100% more gravity (2x).
If 5x the mass and 2x the radius then you would get 5/4 the gravity on the surface, == 25% more, not 20%?
To have 5x the mass and not 8x, the average mass would need to be 5/8 (62.5%) that of in our Earth. Earth: 5.513 g/cm3. 5x mass planet => 3.45 g/cm3.
I see Mars is 3.934 g/cm3 (due to ice?) so perhaps it's not ridiculous.
Culture is strongly related to population density. I read Neanderthals required about 7500 cal per day diet (compared to 1500 cal or so). This tells us an area of land can only support a fraction the amount of Neanderthals compared to modern Humans (1/5th?). This suggests they had a fraction of the culture, given equal intelligence.
As for Neanderthals remaining static, their toolkit changed a lot in Italy.
Consider isolated low population density modern human populations. We "lost" the use of fire in Tasmania and some (one?) of the Andaman islands. Even some Homo Erectus had the use of fire, not to mention huts/shelters with piles.
Given the Neanderthal's lack of population density, I argue that to have maintained their level of culture, they were smarter than modern humans.
Also: "Copper rotor: Anatoly Moskalev, in a recent post to my Motor City blog, astutely points out that “copper in its pure annealed form (most conductive) is very soft metal mechanically. But most highly conductive part of a rotor has to hold biggest mechanical stress because forces from electromagnetic field are applied mostly to areas in rotor with highest current. So making mechanically robust rotor from soft metal trying to minimize its mass is a real challenge.” Exactly. But we do use pure copper; making it mechanically robust is part of our secret sauce.:) "
Ummm, hard-drawn copper has a lower resistance than 'soft' annealed copper. It's all about grain structure.
So much for my memory. I did a quick search, and found a description of the motor worth reading:
http://www.teslamotors.com/roadster/technology/motor
"The Power Electronics Module supplies as much as 900 amps of current to the stator. To handle such high current levels, the stator coils in a Tesla motor employ significantly more copper than a traditional motor of its size. The copper is tightly packed in a proprietary winding pattern to optimize efficiency and power."
It's a 3-phase induction motor (rarely seen in houses, common in factories). Nikola Tesla did invent them, which supports the company's name choice I guess. I expect there have been refinements over the years to the motor design (such as the modern standard copper/aluminium squirrel cage rotor).
IIRC the Tesla motor's version has record power to weight ratio. They used the lowest resistance (softest) copper for the windings they could.
It might pay for itself in a few years of continuous use
I think you're missing a factor of two somewhere. Wouldn't you want the buffer to average out to half-full over the long run? What good is a constantly filled buffer?
Well, we would have to guess how many discharge cycles per day. To pay itself of in 10 years you would need 11 per day (=40000/10/365).
This is reassuring as their claims are seemed so extreme:
"Mr. Hoffmann also cites estimates that the mass-production cost of a 98.8 kWh version of the pack would range from 800 to 1,000 euros, or from about $1,100 to $1,400, which is thousands below current costs."
Both base 10 and base 20 were used. Base 20 was used by the priest class (as it used the "whole human").
The 260 day calendar is thought to be related to the human gestation period. Again, a human thing.
You are confusing "stupid calendar" with "not a solar calendar".
Also of interest, I seem to remember some contention about the start date of that calendar, it may be out by 150 yrs or so, so the lunies may be hyper for some decades to come.
If anything, what they need to do is stop eating carbohydrates.
I meant to say "in the areas of the oil spills"
It is well know that the world is the most productive during ice ages.
*facepalm*
Okay buddy, I've got some prime crop land for sale for you, smack dab in the middle of greenland. I'm sure the incredibly cold temperatures will be very productive for you!
I meant the world as a whole. Plankton prefer colder water, and the current desert areas are huge, have been productive in the ice ages.
Per the "prototype dashboard", rather than tout data only back to 1950, why don't we look backwards 5 million years, because as we know more data means better predictions:
The main change we see here is due rise of the Himilayas. As well as increased albedo, there was a nice new co2 sink caused by the monsoons and freshly broken rock.
Please get an education before spouting stupidity.
And heck, if we look back even further with million-year timescales, we see that the Earth was significantly warmer for long geologic periods of time:
http://upload.wikimedia.org/wikipedia/commons/6/60/Five_Myr_Climate_Change.png [wikimedia.org]
There's just no logical reason to ascribe a majority of current climate change to anthropogenic causes.
The main change we see here is due rise of the Himilayas. As well as increased albedo, there was a nice new co2 sink caused by the monsoons and freshly broken rock.
Please get an education before spouting stupidity.
It is so bizarre that anyone would advocate doing nothing to reduce the expensive effects of global warming.
You think that putting a date 30 years out to curb our countries carbon emissions is drastic?
Yes. Artificially increasing the price of energy will harm the poorest of the poor, and increase poverty and misery throughout the world. Cheap energy means better lives for humanity, period. Telling a family in Africa that they have to watch their children die of malnourishment, exposure to the elements and disease because we're going to make it too expensive for them to afford energy is pretty drastic.
In the US, oil has received many subsidies. It is cheap compared to the rest of the world (aside from oil countries such as SA).
In Nigeria, the life expectancy has dropped to 40 yrs due to oil spills.
Another thing affecting them badly is drought, which gets worse due to global warming.
Making your arguments emotional, does not stop them from being bullshit.
Here's the only place I'd like to get to: agreeing that 1) climate is warming to a point of unnatural irreversible damage and 2) man made factors are contributing to it
#2 might be a reasonable assertion, but #1 is falsified by the historical record. A warmer planet is a better planet for life, period. We've had warmer periods in the past that were not "irreversible", and humanity has flourished during warm periods.
It is well know that the world is the most productive during ice ages.
As for "irreversible", how long did it take to reverse the last time CO2 was this high?
From what I remember, their main problem was lack of oxygen due to the concrete base oxidising. I.E: the air became stale. With older concrete, I don't know that it wouldn't have been significantly more successful.
Slashdot Mirror
The symbols used in the first writing had been used on tokens for trading since 10000 yrs ago or so. The first collection of these symbols, were on bula. I'm going with traders started things off with contracts.
Cloning? To what end? Why did they die out in the first place?.
Why did the Europeans who began colonising Greenland die out, leaving the natives? Is this proof the natives were/are superior and Europeans may as well leave this world?
The assumption was a steady 55 mph, so is certainly the maximum possible range, so I'm sure the actual range would be less if you were driving in the city.
To get an idea, the Wiki page for range in a Nissan Leaf is: 55mph/70miles, 38 mph/138miles, city traffic/105miles.
So no, 55mph is an inefficient speed for an electric car.
Well, volume increase by the cube, and gravity is 1/r^2. So, for the same materials of Earth, a planet with double the radius would have 100% more gravity (2x).
If 5x the mass and 2x the radius then you would get 5/4 the gravity on the surface, == 25% more, not 20%?
To have 5x the mass and not 8x, the average mass would need to be 5/8 (62.5%) that of in our Earth. Earth: 5.513 g/cm3. 5x mass planet => 3.45 g/cm3. I see Mars is 3.934 g/cm3 (due to ice?) so perhaps it's not ridiculous.
As for Neanderthals remaining static, their toolkit changed a lot in Italy.
Consider isolated low population density modern human populations. We "lost" the use of fire in Tasmania and some (one?) of the Andaman islands. Even some Homo Erectus had the use of fire, not to mention huts/shelters with piles.
Given the Neanderthal's lack of population density, I argue that to have maintained their level of culture, they were smarter than modern humans.
from: http://www.teslamotors.com/blog/nikola-tesla-everywhere
Ummm, hard-drawn copper has a lower resistance than 'soft' annealed copper. It's all about grain structure.
So much for my memory. I did a quick search, and found a description of the motor worth reading:
http://www.teslamotors.com/roadster/technology/motor "The Power Electronics Module supplies as much as 900 amps of current to the stator. To handle such high current levels, the stator coils in a Tesla motor employ significantly more copper than a traditional motor of its size. The copper is tightly packed in a proprietary winding pattern to optimize efficiency and power."
It is very difficult to land on. Check out the landing system for the next Mars Science Laboratory NASA mission.
Musk is famous for being very keen on going to Mars, but I wonder just how detailed this plan is so far.
IIRC the Tesla motor's version has record power to weight ratio. They used the lowest resistance (softest) copper for the windings they could.
The Monasteries made significant cash out of book writing.
Every see the fabulous german monastary libraries with all that beautiful marble?
Each book was equal in value to a small farm/vinyard.
The printing press was a disaster for monastery finances / way of life.
It might pay for itself in a few years of continuous use
I think you're missing a factor of two somewhere. Wouldn't you want the buffer to average out to half-full over the long run? What good is a constantly filled buffer?
Well, we would have to guess how many discharge cycles per day. To pay itself of in 10 years you would need 11 per day (=40000/10/365).
Burkas originated with the Zoroastrians in Persia.
It's max ceiling is estimated at 10,000 ft.
it *is* classified as an ultra light.
Also of interest, it's climbing rate is 1000ft/min, which was higher than the helicopter.
Estimated range of 30min, at 100km? == 50km?
A bit like a chopper, but perhaps safer, thanks to the parachute option :)
A VASIMR style propulsion (built and tested), with it's very high ISP, and Nuclear sub style Fission power plant could do far better.
The main problem associated with a fission plant in space is the mass of the required radiators.
Just recently they've had government testing of their new car battery prototype, as well as testing by the independent firm Dekra.
http://www.allcarselectric.com/blog/1058119_its-official-dbm-energys-electric-car-battery-is-real
http://green.autoblog.com/2011/04/05/dbm-energy-record-breaking-kolibri-battery-passes-government-tests/
This is reassuring as their claims are seemed so extreme:
"Mr. Hoffmann also cites estimates that the mass-production cost of a 98.8 kWh version of the pack would range from 800 to 1,000 euros, or from about $1,100 to $1,400, which is thousands below current costs."
http://rumors.automobilemag.com/cars-computers-best-buy-sell-electric-vehicles-45795.html
Tested by a Japanese taxi company (6 taxis + 1 battery swap station?) I read they want to do a second trial.
Why is it so many religious have no understanding of a finite sized world?
Both base 10 and base 20 were used. Base 20 was used by the priest class (as it used the "whole human").
The 260 day calendar is thought to be related to the human gestation period. Again, a human thing.
You are confusing "stupid calendar" with "not a solar calendar".
Also of interest, I seem to remember some contention about the start date of that calendar, it may be out by 150 yrs or so, so the lunies may be hyper for some decades to come.
Um, it's the healthcare system, not the petroleum causing problems:
http://allafrica.com/stories/200808010350.html
If anything, what they need to do is stop eating carbohydrates.
I meant to say "in the areas of the oil spills"
*facepalm*
Okay buddy, I've got some prime crop land for sale for you, smack dab in the middle of greenland. I'm sure the incredibly cold temperatures will be very productive for you!
I meant the world as a whole. Plankton prefer colder water, and the current desert areas are huge, have been productive in the ice ages.
Per the "prototype dashboard", rather than tout data only back to 1950, why don't we look backwards 5 million years, because as we know more data means better predictions:
http://en.wikipedia.org/wiki/File:Five_Myr_Climate_Change.png
The main change we see here is due rise of the Himilayas. As well as increased albedo, there was a nice new co2 sink caused by the monsoons and freshly broken rock. Please get an education before spouting stupidity.
And heck, if we look back even further with million-year timescales, we see that the Earth was significantly warmer for long geologic periods of time: http://upload.wikimedia.org/wikipedia/commons/6/60/Five_Myr_Climate_Change.png [wikimedia.org] There's just no logical reason to ascribe a majority of current climate change to anthropogenic causes.
The main change we see here is due rise of the Himilayas. As well as increased albedo, there was a nice new co2 sink caused by the monsoons and freshly broken rock.
Please get an education before spouting stupidity.
It is so bizarre that anyone would advocate doing nothing to reduce the expensive effects of global warming.
Yes. Artificially increasing the price of energy will harm the poorest of the poor, and increase poverty and misery throughout the world. Cheap energy means better lives for humanity, period. Telling a family in Africa that they have to watch their children die of malnourishment, exposure to the elements and disease because we're going to make it too expensive for them to afford energy is pretty drastic.
In the US, oil has received many subsidies. It is cheap compared to the rest of the world (aside from oil countries such as SA). In Nigeria, the life expectancy has dropped to 40 yrs due to oil spills. Another thing affecting them badly is drought, which gets worse due to global warming. Making your arguments emotional, does not stop them from being bullshit.
#2 might be a reasonable assertion, but #1 is falsified by the historical record. A warmer planet is a better planet for life, period. We've had warmer periods in the past that were not "irreversible", and humanity has flourished during warm periods.
It is well know that the world is the most productive during ice ages.
As for "irreversible", how long did it take to reverse the last time CO2 was this high?
From what I remember, their main problem was lack of oxygen due to the concrete base oxidising. I.E: the air became stale. With older concrete, I don't know that it wouldn't have been significantly more successful.