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 216

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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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As Ukraine continues to methodically destroy Russia's military capabilities with missile strikes, Russia launches missiles at random civilian targets in Ukraine. This Russian missile landed on a street in downtown Odessa, leaving a massive crater. Russia is a terrorist state.
时政
( twitter.com)

2年前 • Igor Sushko • 下载视频 0 评论

00:00:14

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The very same person promised in the Rose Garden next to Obama in 2015 that China would not militarize the South China Sea. You are a fool if you believe a word, or a punctuation for that matter, from this man.
时政
( twitter.com)

2年前 • Yaxue Cao • 下载视频 0 评论

00:01:22

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A massive hole... On an island... In a lake... Despite this unnatural Canadian wonder looks like something straight out of a science fiction novel, Diavik is a diamond mine in the North Slave Region of the Northwest Territories, Canada

[read more: ]
有趣
( buff.ly)

2年前 • Massimo 0 评论

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And yet the speed of the decline in China is extraordinary. The Wall Street Journal analysis features the work of the demographer Yi Fuxian. He expects fewer than 8 million births this year, compared to the 18 million recorded in 2016.
时政
( unherd.com)

2年前 • 易富贤Yi Fuxian《大国空巢》 0 评论

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Ukraine conducted a major special operation near occupied Yevpatoria in Crimea last night. This is different from the attack on the ships in Sevastopol. Ukraine's security service SBU says its drones first struck Russian air defense radars and antennas. 1/
时政
( twitter.com)

2年前 • Tymofiy Mylovanov 0 评论

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Kadyrov is in critical condition

A representative of the Main Intelligence Directorate of Ukraine, Andrei Yusov, said that Kadyrov’s illnesses worsened, which led to a critical condition.

"The information is confirmed from various sources in medical and political circles. This…
时政
( twitter.com)

2年前 • NEXTA 0 评论

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Joint statement from European leaders in Berlin this evening:
—
”The Leaders welcomed significant progress on President Trump’s efforts to secure a just and lasting peace in Ukraine. They also welcomed the close work between President Zelenskyy’s and President Trump’s teams as
时政
( twitter.com)

3个月前 • Ulf Kristersson 0 评论

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❗️❗️❗️Another major corruption scandal in Ukraine: anti corruption bodies expose organized criminal group of sitting MPs who allegedly took systematic bribes for votes in the parliament.
Undercover operation led to this; details promised soon. State Guard reportedly obstructing
时政
( twitter.com)

2个月前 • Iuliia Mendel 0 评论

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In China, 13 children died in a school dormitory fire.
Compensation reportedly dropped 100,000 per day if parents delayed signing.
680+ days later,
there is still no full public explanation.
If this happened at your child’s school,
would money be enough?
时政
( twitter.com)

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

00:01:06

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In this post, we share 11 use cases at the intersection of crypto and AI to help kickstart conversations about what’s possible, what challenges are left to solve, and more — grounded in technology already being built today.
Check it out:
btc
( a16zcrypto.com)

3个月前 • a16z crypto 0 评论

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NEW YEARS EVE POD! 🚨 joins the Besties to discuss his recent investigation into potential daycare fraud in Minnesota
-- Massive Somali Fraud in Minnesota
-- Why this story is resonating and why the national press initially ignored it
-- What the scale of
时政
( twitter.com)

2个月前 • The All-In Podcast • 下载视频 0 评论

01:43:21

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This silver-gilted Greave (or knemis), dated 4th Century BC, was part of the burial gifts of an Odrysian Aristocrat, discovered in Golyamata Mogila (Big Tumulus), situated between the villages of Zlatinitsa and Malomirovo in the Yambol Region, Bulgaria.
#drthehistories
时政
( twitter.com)

1年前 • Dr. M.F. Khan 0 评论

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In 2002, Jason Padgett was brutally beaten outside a karaoke bar, resulting in a brain concussion and severe PTSD. Remarkably, this led to Acquired Savant Syndrome, a condition where a person gains extraordinary knowledge or abilities following physical or psychological trauma.
有趣
( twitter.com)

1年前 • non aesthetic things 0 评论

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An absolute sociopath. Trump literally admits in a recording that he could keep bombing Iranian oil facilities “just for fun.” This phrase will go down in history as irrefutable proof that a madman is leading the United States military. 🔥
时政
( twitter.com)

前天 • Donald J. Trumpstein fake • 下载视频 0 评论

00:01:09

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Very few people know that there is a major political party in South Africa that is actively promoting white genocide.
The video below was just yesterday. A whole arena chanting about killing white people.
A month ago, the South African government passed a law legalizing
btc
( twitter.com)

1年前 • Elon Musk 0 评论

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NEW VIDEO ESSAY ON MAGA MAOISM.
Is Trump a Maoist? I argue MAGA is ultimately a Third World ideology with very little in common with the Western civilisational tradition. Its closest parallels are Chairman Mao, Pol Pot, and Mugabe.
Please watch and comment your thoughts.
时政
( twitter.com)

11个月前 • Drew Pavlou 🇦🇺🇺🇦🇹🇼 • 下载视频 0 评论

00:23:11

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BREAKING NEWS:
Legendary actor Harrison Ford has OFFICIALLY endorsed Kamala Harris in an awesome video:
“I’ve been voting for 64 years.
Never really wanted to talk about it very much but when dozens of former members of the Trump administration are sounding alarms saying
时政
( twitter.com)

1年前 • CALL TO ACTIVISM • 下载视频 0 评论

00:00:59

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If you want to make a 4-panel split-screen video in ONE prompt, the trick is simple:
Tell Grok Imagine exactly what each panel should show. That’s all it needs.
Here I used one season + its animal per panel and it worked perfectly.
btc
( twitter.com)

4个月前 • Karata • 下载视频 0 评论

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Defense Secretary Lloyd Austin argued in a tense video call with Treasury Secretary Janet Yellen and others that the deal should be blocked. Treasury didn’t agree. The agency found those concerns too abstract, and believed that scuttling a transaction on such grounds would amount…
时政
( twitter.com)

2年前 • Bill Bishop 0 评论

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Wang Yi, China's foreign minister, said in the video:
"The survival of the Israelis has been guaranteed, but who cares about the survival of the Palestinians? The Israeli nation is no longer displaced around the world. When can the Palestinian nation return to its homeland?…
时政
( twitter.com)

2年前 • Simone Gao • 下载视频 0 评论

00:00:25

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This amazing foal was born with a patch by his mane that looks like another horse.
The pattern is such a work of art that the foal's owners have called him Da Vinci, or Vinny for short.
有趣
( twitter.com)

1年前 • Figen 0 评论

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Cool, calm analysis on the state of Australia’s relationship with China by
“If history doesn’t reveal this to be quite the peak of the government’s ‘stabilisation’ agenda, then we are very likely to be on the plateau”
时政
( www.afr.com)

1年前 • Will Glasgow 0 评论

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This great foal was born with a patch by his mane that looks like another horse.
The pattern is such a work of art that the foal's owners have called him Da Vinci, or Vinny for short.
有趣
( twitter.com)

1年前 • Figen 0 评论

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This is how Badiucao is censored by China‘s AI
Be cautious to use its service, it tracks and collect ur personal info for CCP and censor contents criticising anything about China.
thx to for providing the evidence.
时政
( twitter.com)

1年前 • 巴丢草 Bad ї ucao • 下载视频 0 评论

00:00:13

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🚨 BREAKING: President Trump pulls the United States out of the WHO, saying: “America’s health policy will be decided by the American people.”
Do you stand with President Trump on this bold move?
A. Yes
B. No
时政
( twitter.com)

4个月前 • Patriot for Trump 🇺🇸✊️ 0 评论