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#41  Re: the must see video clips from u tube             Go Back


#42  Re: the must see video clips from u tube             Go Back

#43  Re: the must see video clips from u tube             Go Back
我已经坐过这个型号了。美联航(United Airlines)的旧金山到成都航线。非常舒适,好像速度也稍微快点。

和谈 wrote: (6/12/2015 22:43)


#44  Re: the must see video clips from u tube             Go Back

Thousands mark summer solstice at Stonehenge

Thousands of people have gathered at Stonehenge to mark this year's summer solstice.
Police said 23,000 attended the neolithic site in Wiltshire to watch the sun rise at 04:52 BST, while others gathered at the nearby Avebury stone circle.
The figure was down on the estimated 36,000 who attended last year and the 30,000 expected this year.
Wiltshire Police said the celebrations were "positive and peaceful".


#45  Re: the must see video clips from u tube             Go Back

Sunset looking down 34th Street. One of two days when the sunset is exactly aligned with the grid of streets in Manhattan.
Copyright © 2001, Neil deGrasse Tyson

by Neil deGrasse Tyson, © 2001-2015

What will future civilizations think of Manhattan Island when they dig it up and find a carefully laid out network of streets and avenues? Surely the grid would be presumed to have astronomical significance, just as we have found for the pre-historic circle of large vertical rocks known as Stonehenge, in the Salisbury Plain of England. For Stonehenge, the special day is the summer solstice, when the Sun rises in perfect alignment with several of the stones, signaling the change of season.

For Manhattan, a place where evening matters more than morning, that special day comes twice a year, when the setting Sun aligns precisely with the Manhattan street grid, creating a radiant glow of light across Manhattan's brick and steel canyons, simultaneously illuminating both the north and south sides of every cross street of the borough's grid. A rare and beautiful sight. These two days happen to correspond with Memorial Day and Baseball's All Star break. Future anthropologists might conclude that, via the Sun, the people who called themselves Americans worshiped War and Baseball.

For these two days, as the Sun sets on the grid, half the disk sits above and half below the horizon. My personal preference for photographs. But the day after also offers Manhattanhenge moments, but at sunset, you instead will find the entire ball of the Sun on the horizon.

Unnoticed by many, the sunset point actually creeps day to day along the horizon: northward until the first day of summer, then returning southward until the first day of winter. In spite of what pop-culture tells you, the Sun rises due east and sets due west only twice per year. On the equinoxes: the first day of spring and of autumn. Every other day, the Sun rises and sets elsewhere on the horizon. Had Manhattan's grid been perfectly aligned with the geographic north-south line, then the days of Manhattanhenge would coincide with the equinoxes. But Manhattan's street grid is rotated 30 degrees east from geographic north, shifting the days of alignment elsewhere into the calendar.

Note that any city crossed by a rectangular grid can identify days where the setting Sun aligns with their streets. But a closer look at such cities around the world shows them to be less than ideal for this purpose. Beyond the grid you need a clear view to the horizon, as Manhattan has across the Hudson River to New Jersey. And tall buildings that line the streets create a vertical channel to frame the setting Sun, creating a striking photographic opportunity.

True, some municipalities have streets named for the Sun, like Sunrise Highway on Long Island and the Sunset Strip in Los Angeles. But these roads are not perfectly straight. And the few times a year when the Sun aligns with one of their stretches of road, all you get is stalled traffic solar glare temporarily blinds drivers.

So Manhattanhenge may just be a unique urban phenomenon in the world, if not the universe.

Note that several years ago, an article in the New York Times identified this annual event as the Manhattan Solstice. But of course, the word solstice translates from the Latin solstitium, meaning stopped sun, in reference to the winter and summer solstices where the Sun's daily arc across the sky reaches its extreme southerly and northerly limits. Manhattanhenge comes about because the Sun's arc has not yet reached these limits, and is on route to them, as we catch a brief glimpse of the setting Sun along the canyons of our narrow streets.

While we are on the subject, when viewed from all latitudes north of the Tropic of Cancer (23.5 degrees north latitude), the Sun always rises at an angle up and to the right, and sets and an angle down and to the right. That's how you can spot a faked sunrise in a movie: it moves up and to the left. Filmmakers are not typically awake in the morning hours to film an actual sunrise, so they film a sunset instead, and then time-reverse it, thinking nobody will notice.


#46  Re: the must see video clips from u tube             Go Back

BBB wrote: (6/13/2015 19:26)
我已经坐过这个型号了。美联航(United Airlines)的旧金山到成都航线。非常舒适,好像速度也稍微快点。



#47  Re: the must see video clips from u tube             Go Back
Published on Jul 23, 2015

As part of a nationwide campaign to raise awareness of the growing economic espionage threat, the FBI has released a short video, "The Company Man: Protecting America’s Secrets." Based on an actual case, the video illustrates how one company was targeted by foreign actors and what the FBI did to help. More at: https://www.fbi.gov/TheCompanyMan




FBI发布了一段视频,名为“公司人:保护美国机密”(The Company Man),并称是“根据真实案例”拍摄,故事大纲如下:




美国国家情报总监办公室(Office of the Director of National Intelligence)反情报主管威廉·埃文尼纳(William Evanina)表示,在FBI对165家公司的调查中,50%的公司承认,贸易机密或知识产权曾遭窃取,95%的公司怀疑,中国是幕后指使。



今年5月,美国政府指控天津大学(Tianjin University) 3名教授以及另外3位中国公民涉嫌经济间谍活动。美国声称,他们窃取了美国敏感技术,以帮助中国大学和由政府控制的企业。

他们被控从马萨诸塞州的思佳讯(Skyworks Solutions)和科罗拉多州的安华高科技(Avago Technologies)窃取技术信息,该技术应用于智能手机、平板电脑和全球定位系统(GPS)设备,还用于军事。



Last modified on 07/26/15 22:01

#48  Re: the must see video clips from u tube             Go Back


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#52  Re: the must see video clips from u tube             Go Back
Ben Carson Says Fox News Keeps U.S. From Becoming Cuba!


#53  Re: the must see video clips from u tube             Go Back
“Exclusive: Carson claimed West Point 'scholarship' but never applied ”

Read more: http://www.politico.com/story/2015/11/ben-carson-west-point-215598#ixzz3qm4csro1

#54  Re: the must see video clips from u tube             Go Back
u definitely don't want to miss this one if u r serious about american politics.


#55  Re: the must see video clips from u tube             Go Back


#56  Re: the must see video clips from u tube             Go Back
你点击右下角youtube, 它带你到油管网站,在那里还可以看。

自娱自乐 wrote: (11/12/2015 6:38)


#57  Re: the must see video clips from u tube             Go Back

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#60  Re: the must see video clips from u tube             Go Back

      View All Pictures in Slide Show

和谈: the must see video clips from u tube 03/18/14
胡杰: 寻找林昭的灵魂 04/09/13