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 298

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China is a free country. Both members hopefully this time are of the opposite gender.

3月19日，海南三亚一处强拆现场，上百名手持的盾牌的强拆人员在楼下整装待发，而户主们也在楼顶上准备好了石块。随着一声令下，强拆人员向大楼发起进攻，楼上的住户们也不看示弱，纷纷抄起石头朝着“攻城”的强拆人员们砸去，喊杀声此起彼伏。

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“官瘾不小” 3月20日，阳江龙源精英学校，为了迎接100天后的中考，竟然举办了规模盛大的阅兵仪式，以鼓舞士气。网友们评论：校长的官瘾真大，不敢想象这是2026年会发生的事情。

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医生朋友说，健身是为了死的更快，更果断！

成都糖酒会就是风向标，今年有多难不用解释了。

#乌克兰战报乌克兰国防部视频：一个聪明的俄军士兵。。。。

怎样看一个人的认知高低？

#看完了这部乌克兰国防部视频：🇷🇺 俄军入侵士兵平视🇺🇦 乌军FPV无人机。

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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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Donkey video bombs the white tiger with awesome smile

Credit: Jukin Media
有趣
( twitter.com)

2年前 • Epoch Animal Lovers • 下载视频 0 评论

00:00:54

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Time-lapse video of a storm over West Australia

[📹 Geoff Green: ]

有趣
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2年前 • Massimo • 下载视频 0 评论

00:00:26

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You are down bad if you seen the elastigirl video 😭
#ads
有趣
( twitter.com)

1年前 • Lance🇱🇨 0 评论

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Video of Putin saying the only thing he can't forgive is betrayal.

时政
( twitter.com)

2年前 • The Spectator Index • 下载视频 0 评论

00:00:09

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A Titanic model that sinks like the real ship

[full video, zimmerman0529: ]

有趣
( buff.ly)

2年前 • Massimo • 下载视频 0 评论

00:00:15

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BREAKING: Elon Musk says video and audio calls are coming to X
时政
( twitter.com)

2年前 • The Spectator Index 0 评论

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One video that can fully describe PRC Ministry of Foreign Affairs now.
时政
( twitter.com)

3个月前 • The Great Translation Movement 大翻译运动 • 下载视频 0 评论

00:00:30

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BREAKING: Video shows how bystander disarmed one of the Bondi Beach gunmen
时政
( twitter.com)

3个月前 • The Spectator Index • 下载视频 0 评论

00:00:15

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1989 年 6 月 14 日，在北京的一条街道上，一名戴着手铐的男子被士兵牵着走，警察和士兵正在继续搜查参与民主抗议的民众。
A handcuffed man is led by Chinese soldiers on a street in Beijing 14 June, 1989, as police and soldiers keep searching people involved in pro-democracy protests.
时政
( twitter.com)

1年前 • 朱韵和 0 评论

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1996 年 12 月，迈克尔-杰克逊在 “HIStory ”巡回演唱会上对着驶来的坦克高歌。
Earth Song HIStory tour
Michael Jackson performs on stage singing to an approaching tank on HIStory tour in December 1996. (Photo by Phil Dent/Redferns)
时政
( twitter.com)

9个月前 • 朱韵和 0 评论

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GBU-57A/B MOP
- 30,000-pound (13,600 kg)-'bunker buster' bomb developed for the United States Air Force
- Can penetrate about 60 m (200 ft) of earth or 18 m (59 ft) of concrete
- Can be dropped only by the B-2 Spirit stealth bomber
- Used in US strikes on Fordow earlier today
时政
( twitter.com)

9个月前 • The Spectator Index 0 评论

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🚨 Vice President JD Vance on Elon Musk and Tesla attacks:
"It really is an act of terrorism. Elon has taken a big role in the administration. I think he's doing a great job. And so you have these people trying to tear him down, and, by consequence, tear down the entire
btc
( twitter.com)

1年前 • DogeDesigner 0 评论

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I am deeply saddened to learn of the loss of life and injury caused by the military attack on the Holy Family Catholic Church in #Gaza. I assure the parish community of my spiritual closeness. I commend the souls of the deceased to the loving mercy of Almighty God, and pray for
时政
( twitter.com)

8个月前 • Pope Leo XIV 0 评论

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🚨 June 24: a 🇯🇵 mother and her pre-school son were attacked with a knife by a 🇨🇳 man in Suzhou, Jiangsu Province.
The mother and child were waiting for a bus of Japanese School of Suzhou. They suffered non-life-threatening injuries and were treated at a hospital.
A Chinese
时政
( twitter.com)

1年前 • Byron Wan 0 评论

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Angelina Jolie once tried to hire a hitman to kill her, because she felt that a murder would be easier on her family than her committing suicide.
The would-be-hitman talked her out of it by asking her to think about it and he will call her back in 2 months.
有趣
( twitter.com)

1年前 • non aesthetic things 0 评论

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Tri-fold concept phone unveiled by TECNO 🤩 Phantom Ultimate 2
It has a 6.48-inch display when folded and opens up to a 10-inch 3K OLED panel that can be arranged in different ways. Prototype measures just 11mm thick when folded. Galaxy Z Fold6 is 12.1mm.
No release date yet.
时政
( twitter.com)

1年前 • Ben Geskin • 下载视频 0 评论

00:00:46

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Justice is beautiful ✌️🌻
They wanted to see me on the porch of my Brooklyn home, covered in blood.
I wore red instead to face my would-be assassin and to celebrate life, justice, and freedom.
The Russian mobsters hired by Iranian regime sent to kill me on US soil were
时政
( twitter.com)

4个月前 • Masih Alinejad 🏳️ • 下载视频 0 评论

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ELON MUSK ON GROK 4 HEAVY, GROK 5, AGI & GROKIPEDIA:
• Grok 4-Heavy: "is still the smartest AI"
• Grok 5: Will be the "smartest AI in the world by a significant margin on every metric"
• AGI: Grok 5 represents the first time xAI has a "non-zero chance" of achieving AGI (Musk
btc
( twitter.com)

4个月前 • X Freeze 0 评论

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My Poster On Indian Army BMP-2 TIFCS And Great To Known Indian Army BMP-2s Finally Got Much Needed Thermal Imager Fire Control System To Fight At Night By Alpha Tech - ELSEC And Adani Group And Presently Deployed At LAC Also Will Post More Information In Following Post 🇮🇳⚡️🇨🇳
时政
( twitter.com)

2年前 • \ud835\udc0a\ud835\udc14\ud835\udc0d\ud835\udc00\ud835\udc0b \ud835\udc01\ud835\udc08\ud835\udc12\ud835\udc16\ud835\udc00\ud835\ 0 评论

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Raw Footage: Israeli father in the Kfar Gaza community drives to try to rescue his daughter on the horrible Sabbath of October 7th.

While he is talking to her on the phone and looking for a safe route to reach her, he is ambushed by terrorists who shoot him.

His daughter Ofir…
时政
( twitter.com)

2年前 • Hananya Naftali • 下载视频 0 评论

00:01:39

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The fate of the D-21 that had disappeared on the first operational flight was finally revealed in February 1986 when an official from the CIA returned a panel to Ben Rich that he had been given by a Soviet KGB agent. The drone had self-destructed over Siberia and the Soviets had…
时政
( twitter.com)

2年前 • Habubrats SR-71 0 评论

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The 3-year-old girl who survived 11 days in the Siberian desert with the help of her dog.
She ate fruit, drank water from a river, and managed to stay alive by clinging to her faithful companion, who eventually led the rescue team to her.
The footage below shows the moment
有趣
( twitter.com)

1个月前 • The Figen • 下载视频 0 评论

00:00:32

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A 20-year marathon for Chinese exports to the US, back to the starting line overnight.
Goldman Sachs warned last year that China’s share of U.S. imports could fall to 7.5% by 2025.
Now it’s 2026—and reality has confirmed it.
7.5% is where China was in 2001, the year it joined
时政
( twitter.com)

1个月前 • Ken Cao-The China Crash Chronicle 0 评论

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东南车队抵达蒙特利马尔时受到示威者的欢迎。近一千辆车现在是前往里昂的车队的一部分。
The South-East convoy is greeted by demonstrators on its arrival in Mont…
时政
( twitter.com)

4年前 • twitter机器人 0 评论

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Banks in China are owned by the communist government. Your money is at their mercy. More often than not, when the government need cash, they will just go to the bacnk and withdraw and then the bank will give you a thousand excuse on why you can't have access to your money.
时政
( twitter.com)

18天前 • The Great Translation Movement 大翻译运动 • 下载视频 0 评论

00:00:24