C*Q
发帖数: 65 | 1 Paris is small: no corner is farther than six miles from the
square in front of Notre-Dame Cathedral. The city has a total
area of 41 square miles (105 square kilometres), if the two
big parks at either extremity are included, and 34 square
miles without them. The city occupies a bowl hollowed out by the
Seine in its prehistoric vigour, and the surrounding heights have
been respected as the limits of the city. The river arches through
the center of town, visiting 10 of the 20 arrondissements.
Th |
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C*Q
发帖数: 65 | 2 Paris is small: no corner is farther than six miles from the
square in front of Notre-Dame Cathedral. The city has a total
area of 41 square miles (105 square kilometres), if the two
big parks at either extremity are included, and 34 square
miles without them. The city occupies a bowl hollowed out by the
Seine in its prehistoric vigour, and the surrounding heights have
been respected as the limits of the city. The river arches through
the center of town, visiting 10 of the 20 arrondissements.
Th... 阅读全帖 |
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c**i
发帖数: 6973 | 3 Enchantment in Mesoamerica. Wall Street Journal, Mar 26, 2011 (in the column
"Visualizer")
http://online.wsj.com/article/SB100014240527
48703858404576214923106032328.html
(introducing a book: Andrea Stone and Marc Zender, Reading Maya Art; A
hieroglyphic guide to ancient Maya painting and sculpture. Thames & Hudson,
2011)
Note:
(a) Maya Civilization
http://en.wikipedia.org/wiki/Maya_civilization
(Pre-Classic period (c. 2000 BC to 250 AD); Classic period (c. 250 AD to 900
AD), and continued throu... 阅读全帖 |
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B********e
发帖数: 19317 | 4 【 以下文字转载自 Joke 讨论区 】
发信人: Huan2007 (胡绵涛), 信区: Joke
标 题: Re: 收音机正在说老爱错了，超光速可行
发信站: BBS 未名空间站 (Thu Sep 22 18:23:40 2011, 美东)
The science world was left in shock when workers at the world's largest
physics lab announced they had recorded subatomic particles travelling
faster than the speed of light – a feat that Einstein said was impossible.
If the findings are proven to be accurate, they would overturn one of the
pillars of the Standard Model of physics, which explains the way the
universe and ev... 阅读全帖 |
|
c**i
发帖数: 6973 | 5 Enchantment in Mesoamerica. Wall Street Journal, Mar 26, 2011 (in the column
"Visualizer")
http://online.wsj.com/article/SB1000142405
2748703858404576214923106032328.html
(introducing a book: Andrea Stone and Marc Zender, Reading Maya Art; A
hieroglyphic guide to ancient Maya painting and sculpture. Thames & Hudson,
2011)
Note:
(a) Maya Civilization
http://en.wikipedia.org/wiki/Maya_civilization
(Pre-Classic period (c. 2000 BC to 250 AD); Classic period (c. 250 AD to 900
AD), and continued throu... 阅读全帖 |
|
c**i
发帖数: 6973 | 6 Joseph Manning, Beyond the Pharaohs. Wall Street Journal, Mar 19, 2011.
http://online.wsj.com/article/SB10001424052748
704893604576200393350126576.html?mod=WSJ_Books_LS_Books_8
(book review on Toby Wilkinson, The Rise and Fall of Ancient Egypt; The
History of a civilization from 3000BC to Cleopatra. London: Bloomsbury (2010
) and Manhattan: Random House (2011))
Quote:
"Known as the Saite period (ca. 650-525 B.C.) because the Egyptian capital
was located at Sais in the western Nile Delta, this pe... 阅读全帖 |
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s******l
发帖数: 278 | 7 27. Ashoka Station
How tiny the island looked from this altitude!
Thirty-six thousand kilometres below, straddling the
equator, Taprobane appeared not much bigger than the moon.
The entire country seemed too small a target to hit; yet he
was aiming for an area at its centre about the size of a
tennis court.
Even now, Morgan was not completely certain of his
motives. For the purpose of this demonstration, he could
just as easily have operated from Kinte Station and targeted
Kilimanjar |
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s******l
发帖数: 278 | 8 37 . The Billion-Ton Diamond
In the last seven years much had been done, yet there
was still so much to do. Mountains - or at least asteroids -
had been moved. Earth now possessed a second natural moon,
circling just above synchronous altitude. It was less than a
kilometre across, and was rapidly becoming smaller as it was
rifled of its carbon and other light elements. Whatever was
left - the core of iron, tailings and industrial slag -
would form the counterweight that would keep the To |
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s******l
发帖数: 278 | 9 45. The Man for the Job
"We can do it," said Warren Kingsley with a broad smile.
"Spider can reach the Basement."
"You've been able to add enough extra battery power?"
"Yes, but it's a very close thing. It will have to be a
two-stage affair, like the early rockets. As soon as the
battery is exhausted, it must be jettisoned to get rid of
the dead weight. That will be around four hundred
kilometres; Spider's internal battery will take it the rest
of the way."
"And how much payl |
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s******l
发帖数: 278 | 10 47. Beyond the Aurora
Morgan doubted if even Professor Sessui, five hundred
kilometres above, had so spectacular a view. The storm was
developing rapidly; short-wave radio - still used for many
non-essential services - would by now have been disrupted
all over the world. Morgan was not sure if he heard or felt
a faint rustling, like the whisper of falling sand or the
crackle of dry twigs. Unlike the static of the fireball, it
certainly did not come from the speaker system, because it
was |
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v*****s
发帖数: 20290 | 11 【 以下文字转载自 Joke 讨论区 】
发信人: Huan2007 (胡绵涛), 信区: Joke
标 题: Re: 收音机正在说老爱错了，超光速可行
发信站: BBS 未名空间站 (Thu Sep 22 18:23:40 2011, 美东)
The science world was left in shock when workers at the world's largest
physics lab announced they had recorded subatomic particles travelling
faster than the speed of light – a feat that Einstein said was impossible.
If the findings are proven to be accurate, they would overturn one of the
pillars of the Standard Model of physics, which explains the way the
universe and ev... 阅读全帖 |
|
D*****r
发帖数: 6791 | 12 http://www.gutenberg.org/files/37726/37726-h/37726-h.htm
IN GOD'S WAY
SCHOOL-DAYS
I.
In the melting snow on the hill-side by the sea, in the last rays of the
evening sun, stood a boy of fourteen, awestruck. He looked toward the west,
out across the sea; he looked toward the east, over town and shore and the
broad hills; in the background still higher peaks rose far away in the clear
sky.
The storm had lasted a long time; it had been more terrible, too, than any
the old people could remember. In ... 阅读全帖 |
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Y**u
发帖数: 5466 | 13 I hope you can all hear me, can you? Is it quite audible? Right. This is the
last talk. During the last three times that we have met here we have been
talking about the chaos in the world, the misery, the suffering, and the
desire for entertainment and the avoidance of fear. We went into several
things concerning our daily life. During all these talks it must have been
very clear that we are concerned with the human transformation
psychologically, for that alone can bring about a change in the s... 阅读全帖 |
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b*****n
发帖数: 3774 | 14 42.195 kilometres/295=143meter/day
师兄家豪宅，每天从bedroom到bathroom再到garage再开车到办公室，到了办公室还要
常常走出切给pp blonde小蜜聊天。。估计咋个都够了。 |
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W***n
发帖数: 11530 | 15 Singapore Airlines Airbus loses power in-flight to both engines
By Afp
Published: 03:31 EST, 27 May 2015 | Updated: 03:32 EST, 27 May 2015
A Singapore Airlines (SIA) Airbus plane carrying 194 people temporarily lost
power to both engines on a recent flight to Shanghai, SIA confirmed
Wednesday after a flight tracker said the plane had to descend 13,000 feet (
3.96 kilometres) before normal operation was restored.
The carrier said it was investigating the May 23 incident together with
Airbus and e... 阅读全帖 |
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W***n
发帖数: 11530 | 16 Singapore Airlines Airbus loses power in-flight to both engines
By Afp
Published: 03:31 EST, 27 May 2015 | Updated: 03:32 EST, 27 May 2015
A Singapore Airlines (SIA) Airbus plane carrying 194 people temporarily lost
power to both engines on a recent flight to Shanghai, SIA confirmed
Wednesday after a flight tracker said the plane had to descend 13,000 feet (
3.96 kilometres) before normal operation was restored.
The carrier said it was investigating the May 23 incident together with
Airbus and e... 阅读全帖 |
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a****y
发帖数: 1035 | 17 http://www.nature.com/nsu/030120/030120-4.html
Antineutrinos caught in vanishing act
Disappearance of nuclear reactors' subatomic particles confirms theory.
22 January 2003
PHILIP BALL
Exotic particles emitted by nuclear reactors are vanishing before they've
travelled a few hundred kilometres, according to an international experiment
in Japan1.
This is just what the team of scientists called the KamLAND collaboration had
hoped. It confirms one of last year's most exciting discoveries: the
inter |
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i*********5
发帖数: 19210 | 20 What a great day of racing at Hardwood Hill! Never rode my mountain bike so
long in a day before. But since it's the only day I get to ride my MTB for
the year, why not make it worth the trip. After all 8-hour is relatively
short compared to an 11-hour Ironman.
All the preparation was checking out last year's solo result and comparing
that to my times in the relay team. And I figured if the course is a 9km one
, then I should aim for 14 laps or 34:15 per lap (10% slower than my average
lap time ... 阅读全帖 |
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V***b
发帖数: 3419 | 21 2015年的目标是130g/km
http://www.ft.com/cms/s/0/e51091c4-dd79-11e2-a756-00144feab7de.
Deal reached on tougher emissions cap for EU carmakers
By Henry Foy in London, Joshua Chaffin in Brussels and Chris Bryant in
Frankfurt
Germany has won concessions on an agreement to cap car emissions in the EU,
in a deal that will allow manufacturers to continue to offset sales of
electric and other green vehicles against those of more polluting cars.
The agreement, reached late on Monday, which confirmed an over... 阅读全帖 |
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t********i
发帖数: 7856 | 22 这车当然牛了。
我要是会修车的话也想搞一台W12。
number
Phaeton
the
even
kilometres |
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c*********r
发帖数: 19468 | 23 别听wiki胡扯，Phaeton那么大的车335hp根本开不到300km/h，还all day呢……
估算一下，Phaeton的Cd是0.32，正面截面积不知道，但肯定大于两平米，少算点，算
两平米，那么300km/h时的阻力：
0.5*1.29*0.32*2*(300*1000/3600)^2=2864N
滚动阻力是小头，大致估计下，0.015*2500*9.8=368N
总共3232N，需要功率大约270kW，大马力带中差的AWD车，传动效率按80％估计的话，
需要引擎飞轮功率337.5kW
和459PS，实际上连W12都上不到这个数……
这还只是个理论限制，实际上Phaeton的齿比可能根本没有可能允许300km/h都说不定……
number
Phaeton
the
even
kilometres |
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f**********g
发帖数: 2252 | 24 Stable Spot Prices Struggle to Boost Uranium Stocks
1 hours 31 minutes ago - Marketwire via Comtex
MarketwireUranium stocks have been on the downswing in recent weeks
following Germany's surprise announcement claiming it will shut down all
nuclear reactors by 2022. According to World Bank, Germany accounts for
about 5 percent of global uranium demand, with just 17 nuclear reactors. By
comparison, there are 104 nuclear reactors in the United States and 58 in
France. The Bedford Report examines th... 阅读全帖 |
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T******y
发帖数: 128 | 25 The full Moon will loom larger in the sky on Friday than it has since 1993,
as it will be nearly as close as it ever comes to Earth in its orbit.
The Moon does not orbit Earth in a perfect circle. Instead, it follows an
elliptical path that brings it 50,000 kilometres closer to our planet on one
side of its orbit (called perigee) than the other (apogee).
It'll be in year 2016 for such a close distance. |
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