In this video by QuantumBoffin, an experiment demonstrates the total internal reflection of light inside a glass block. An angular scale is used to measure the critical angle and determine the refractive index of the glass [full video: ] , page 149

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In this video by QuantumBoffin, an experiment demonstrates the total internal reflection of light inside a glass block. An angular scale is used to measure the critical angle and determine the refractive index of the glass

[full video: ]
有趣
( buff.ly )

2年前由 Massimo 提交

1周内 1个月内 1年内全部时间

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Welcome to China, California Governor . I am pleased Guangzhou Consul General Lisa Heller was there to greet you on your first stop in Shenzhen. The first visit by a U.S. governor to China in four years.
时政
( twitter.com)

2年前 • Ambassador Nicholas Burns 0 评论

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🚨 Breaking: Israel 🇮🇱 destroyed the “Center for Scientific Research” (chemical weapons development center) in Damascus 🇸🇾
Israel is making the world a safer place by making sure chemical weapons don't fall in the wrong hands.
时政
( twitter.com)

1年前 • Dr. Eli David 0 评论

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The US alliance system established in East Asia is faltering: "Trump's coercive and ruthless response to Ukraine is predictive of the US response to Japan in the future when Japan is invaded by China and Russia."
时政
( twitter.com)

1年前 • The Great Translation Movement 大翻译运动 0 评论

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Entire family —11 members— wiped out of the civil registry by Israeli occupation forces tonight!
They were forced out of their home in Beit Lahiya and sought refuge in Deir al Balah, where they were KILLED!
时政
( twitter.com)

1年前 • Motasem A Dalloul • 下载视频 0 评论

00:00:19

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My question to ，in this so called “power of art” Show，is there any peace about Art challenging Human rights record in China？ about advocating for Dr Yang Henjun？ About HK crackdown？About Tibet or Uyghur？
Is this power of art only for praising dictatorship？
时政
( twitter.com)

2年前 • 巴丢草 Bad ї ucao 0 评论

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My solidarity with the people in Georgia who are peacefully protesting against the actions of the pro-Russian government. This time, the government decided to adopt a copy of the Russian law on foreign agents. In Russia, this law destroyed all human rights organizations.
时政
( twitter.com)

1年前 • Oleksandra Matviichuk 0 评论

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AROUND 11000 YEARS AGO IN ANATOLIA -
(Karahantepe Şanlıurfa; Türkiye)
The date of construction of this eagle statue was 9000 BC, that is, 11000 years ago. In other words, the people who made this statue 11000 years before us ~5000 years from Sumerians, ~7000 years from…
时政
( twitter.com)

1年前 • Dr. M.F. Khan 0 评论

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Has it ever occurred to the cynical BBC that elected officials visit Taiwan because they love to meet their elected counterparts in a fellow democracy? This report also perpetuates a subtle untruth that only U.S. congressmen do this. In fact, parliamentarians from virtually every…
时政
( twitter.com)

2年前 • MilesYu 余茂春 0 评论

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The dangerous parallels between Putin’s ambitions in Ukraine and Xi’s claims on Taiwan: “Putin and Xi Jinping are similar…They think they are the chosen ones. And they want to stay in power forever. But this is scary. And this is nonsense.”
My analysis…
时政
( www.cnn.com)

2年前 • Will Ripley 0 评论

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One of the saddest days in America.
Just one day after Hamas executed an American hostage in captivity, this is what New York City looks like when thousands show support for Hamas.
Americans, I beg you, vote wisely. Is this the America you want?
时政
( twitter.com)

1年前 • Vivid.🇮🇱 • 下载视频 0 评论

00:02:14

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Yurong Luanna Jiang is the first Chinese female graduate to deliver the commencement address in Harvard history.
In return, she used this speech to promote 'Community with a Shared Future for Mankind', a Xi Jinping propaganda term. Allowing this as part of 'free speech' turns
时政
( twitter.com)

9个月前 • The Great Translation Movement 大翻译运动 • 下载视频 0 评论

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what a ridiculous moment this is. this image might be in textbooks at some point.
“tesla launches robotaxi” doesn’t even begin to do any justice in any meaningful way.
kinda just the beginning of post driving civilization. second only to space because it basically rewrites
btc
( twitter.com)

9个月前 • signüll 0 评论

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#Zelenskyy: I am ready to hold elections, but the Ukrainian society does not support this idea

The Ukrainian president said this during a news conference in #Canada.

He believes that #Ukrainians will not approve of spending money on other needs, except for military security. In…
时政
( twitter.com)

2年前 • NEXTA 0 评论

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This payment was also a fairer payment!
Many small accounts had previously received very high payments from large accounts, due to a bug in the payment algorithm!
The payment algorithm bug has been fixed!
In this payment, most accounts received payments according to their
有趣
( twitter.com)

1年前 • Figen 0 评论

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In the private sector, people do not attempt to destroy someone’s livelihood for holding different political views. Only in government, and only from one side, do we see this kind of targeted economic punishment. This is not about “consequences.” It is an attempt to enforce
btc
( twitter.com)

1年前 • DataRepublican (small r) 0 评论

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🚨🚨 THIS WILL BLOW YOU AWAY.
The Democrats have filed a lawsuit against the USDA for trying to find out how many illegal aliens are receiving welfare benefits.
D.O.G.E.:
“This literally blew us away. We went there to find fraud, and we found this by accident.
We were like,
btc
( twitter.com)

4个月前 • 🇺🇸RealRobert🇺🇸 • 下载视频 0 评论

00:02:19

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Under Sharia law, if a woman is raped, it’s considered sex outside of marriage, and she is to be punished.
In most Sharia countries, women are stoned do death if they report they were raped. So the one in the video got ‘lucky’ for only being flogged.
时政
( twitter.com)

1年前 • Dr. Maalouf ‏ • 下载视频 0 评论

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The Horrific Reality in Bangladesh: A Genocide of Hindus
To all the Hindus sending me the ISIS-level videos from Bangladesh, I am horrified. The atrocities are so extreme that I cannot even post most of them.
(In the horrifying video below, they are reportedly lynching a
时政
( twitter.com)

1年前 • Amy Mek • 下载视频 0 评论

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The FBI is working alongside our local and state law enforcement partners in Utah to fully investigate and seek justice in the fatal shooting of Charlie Kirk at Utah Valley University. Anyone with information, photos, and video from the incident can help the FBI identity more
btc
( twitter.com)

6个月前 • FBI 0 评论

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Iran now trying to sink US aircraft carrier. In a video game. Maybe the mullah thinks that it is true and the Chinese netizen will probably say Iran did it with Chinese weapons. In the end, they just could come walk out out their delusion and narrative.
时政
( twitter.com)

1个月前 • The Great Translation Movement 大翻译运动 • 下载视频 0 评论

00:00:53

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Wow! Anti-CCP activist exposed this disgusting and antisemitic trending graphic spreading on Chinese social media (which of course is heavily censored meaning this is permissible if not created by the CCP itself), which mocks black American athletes, calls white
时政
( twitter.com)

1年前 • Emily Schrader - אמילי שריידר امیلی شریدر 0 评论

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National Geographic chose this as the best picture of 1987.

This is the story of Dr. Zbigniew Religa, captured after a 23 hour heart transplant, and of his patient Tadeusz Zitkevits, who ended up by outliving his surgeon

[read more: ]
时政
( ow.ly)

2年前 • Massimo 0 评论

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CAPTURED ON LIVE TV: CBS records a Foot Locker outlet in Chicago being vandalized and looted. This is the reality of life in Democrat-run cities.
时政
( twitter.com)

1年前 • Ian Miles Cheong • 下载视频 0 评论

00:00:33

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Woman: 'I might be praying in my head.'
Police: 'You can't be doing it though.'
Woman arrested.
This is where we’re at right now in Britain.
时政
( twitter.com)

1年前 • Paul Golding • 下载视频 0 评论

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45 weeks ago.
Never forget how this started or that ‘civilians’ in Gaza were willing collaborators in the worst massacre of Jews since the Holocaust!
#Oct7HamasMassacre

时政
( twitter.com)

1年前 • Arsen Ostrovsky 🎗️ • 下载视频 0 评论

00:00:20