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 68

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Old friends of China.

2021年安徽安庆市高考分数为660分的文科状元陶同学，当年被北京大学的社会学专业录取，目前毕业在送外卖

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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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Michelangelo's Last Judgment in the Sistine Chapel, initiated by the Museums' Restoration Laboratory in an effort to restore its original luminosity.
有趣
( twitter.com)

17天前 • The Figen • 下载视频 0 评论

00:01:01

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This is a photograph taken by the award- winning underwater photographer Jason Washington and this is one of the best underwater pic I've ever come across. I had to share this.
时政
( twitter.com)

2年前 • Captivating Vibe 0 评论

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Spanish scientists led by MARINO BARBACID, has cured pancreatic cancer in mice. A Cure in animal models is a major step toward potential cancer treatment in humans.
有趣
( twitter.com)

1个月前 • non aesthetic things 0 评论

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🇺🇸The One, Big, Beautiful Bill "is arguably the most significant piece of Legislation that will ever be signed in the History of our Country!" Great job by Speaker Mike Johnson, and the House Leadership, and thank you to every Republican who voted YES on this Historic Bill!"
时政
( twitter.com)

9个月前 • The White House 0 评论

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🚨ELON: TREASURY STAFF TRIED TO STOP FRAUD FOR YEARS—BUT MANAGEMENT BLOCKED THEM
“I do want to credit the working level people in Treasury who have wanted to do this for many years, but have been stopped by prior management.
Everything at Treasury was geared towards complaint
btc
( twitter.com)

1年前 • Mario Nawfal 0 评论

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Elon Musk
“I think overregulation has inhibited a tremendous amount of progress and innovation in Europe.
I call it the slow strangulation by overregulation because it's not like at any one moment you feel this is it, but the noose around the neck just gets a little tighter
btc
( twitter.com)

1年前 • Tesla Owners Silicon Valley • 下载视频 0 评论

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President Trump is the ultimate deal maker and will bring peace to the region by ending the war in Ukraine. As we've always said, American troops should never be put into harm's way where it doesn’t advance American interests and security. This war is between Russia and Ukraine.
btc
( twitter.com)

1年前 • JD Vance 0 评论

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The impossibly rich lifestyle of DC liberals, funded by YOU the taxpayer, without your consent or approval. This is how they live, and the receipts prove it.
USAID, the NEA, and other taxpayer-funded programs issue billions of dollars in grants. John and Jane, or Pete and Pete,
btc
( twitter.com)

1年前 • Cernovich 0 评论

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Past 2am in Amritsar amid news of a massive counter attack underway by India after Pakistan’s attempt to send missiles & drones into India’s cities, including Jammu airport, was thwarted for the 2nd consecutive night. This will be a long night. Salutes to our armed forces 🇮🇳🙏🏾
时政
( twitter.com)

10个月前 • barkha dutt • 下载视频 0 评论

00:03:02

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Everything changed today.
This could go down as the biggest healthcare shift in American history.
Trump just did what every other politician promised to do but failed—he took a wrecking ball to Big Pharma.
An executive order to slash drug prices by up to 90%.
Then RFK Jr.
时政
( twitter.com)

10个月前 • The Vigilant Fox 🦊 0 评论

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This is what the current Islamist dictatorship in Iran has done to the people of Iran over the last 46 years.
If you believe that a terrorist state run by religious lunatics has a right to have nuclear weapons because other countries have them, you've been brainwashed. Reevaluate
时政
( twitter.com)

8个月前 • Igor Sushko 0 评论

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This allegedly happened a couple days ago in Mississippi where a white child was beaten to a pulp by a bus full of black students. If things were the other way around there would be a national outrage and the media would he reporting on it non-stop.
时政
( twitter.com)

1年前 • Ian Miles Cheong • 下载视频 0 评论

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As many observers of 🇻🇳 politics throughout 2024 know, it’s been a tumultuous year in elite politics. At the grassroots, the major phenomenon has been red nationalism, esp. among the youth. On this front, 2024 has been unlike any other years by scale since the reform era began.
时政
( twitter.com)

1年前 • C Nguyen 0 评论

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“In 2017, a 10-year-old Florida girl Juliana Ossa fought off a deadly alligator attack by sticking her two fingers up the alligator's nose. This forced the alligator to open its mouth to breathe, which freed the girl's leg and she escaped. She had learned the trick from
有趣
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5个月前 • non aesthetic things 0 评论

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Grokipedia is live.
Let that sink in.
I checked the article on someone who is really important to me and got smeared very badly by lying Wikipedia (my dad...) and Grok fixed nearly all of it.
Thank you for this. Our civilization was on track of being deceived and
btc
( twitter.com)

4个月前 • Jo Bhakdi 0 评论

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Glass Beach at Ussury Bay in the Russian Far East
Those beautiful pebbles are bottle debris polished by the sea water. This place used to be a dump for old glass bottles from a local porcelain factory. Nature has corrected man's mistake, and created another piece of beauty.
有趣
( twitter.com)

2年前 • Curiosity 0 评论

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The first exile from a European country is England in 1290. This is after the York Massacre of 1190 where an entire Jewish population is slaughtered by a mob after a bunch of antisemitic ideas like “Jews control the money” become widespread. Not only is all Jewish property…
时政
( twitter.com)

2年前 • Brianna Wu 0 评论

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The thuggish Nicholas Maduro, bank- rolled and armed by the CCP, issued this threat to annex 2/3 of Guyana on the exact day of the 200th anniversary of the Monroe Doctrine. It’s not just about oil, which Venezuela already has plenty, it’s really about challenging U.S. power in…
时政
( twitter.com)

2年前 • MilesYu 余茂春 0 评论

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Born #Today in 1906, Philo Farnsworth, crucial contributor to the all-electronic TV, was disappointed by it for most of his life. He only changed his mind the day he saw Neil Armstrong walk on the Moon on TV, telling his wife "this has made it all worthwhile"
有趣
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2年前 • Massimo 0 评论

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Taiwan is next. Russia's war in Ukraine is only a small part of the problem facing the modern Democratic World. China has launched massive military exercises and is openly threatening Taiwan. This is a long thread, but it is very important. Let me remind
1/28
🧵by
时政
( twitter.com)

1年前 • Artur Rehi 0 评论

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GROK 3 BUILT ANOTHER MULTIPLAYER GAME—NO HUMAN NEEDED
A full game, written in Python, developed almost entirely by Cursor AI, while Grok 3 handled the websocket server.
No human wrote the core gameplay—AI did it all.
This isn’t just automation; it’s AI stepping into the role
btc
( twitter.com)

1年前 • Mario Nawfal • 下载视频 0 评论

00:01:30

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So many ironies here showing just how useless and out of date Jon Stewart is. Not only is this exactly what USAID does, but in Hungary it’s worse: the EU BANNED Hungary from enforcing an NGO transparency law making Hungarian media orgs disclose “state media” funding by USAID
btc
( twitter.com)

1年前 • Mike Benz 0 评论

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🔴HUGE CROWDS FORMING IN KARAJ:
"This is the final battle,
Pahlavi will return"
This is a grassroots and organic Iranian uprising. Neither the CIA nor the Mossad is involved in this. This is Iran choosing to correct the 1979 catastrophe.
时政
( twitter.com)

2个月前 • 𝐍𝐢𝐨𝐡 𝐁𝐞𝐫𝐠 ♛ ✡︎ • 下载视频 0 评论

00:00:14

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The whole stadium was more invested in this than in the game
有趣
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10个月前 • NO CONTEXT HUMANS • 下载视频 0 评论

00:00:59

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The whole stadium was more invested in this than in the game
有趣
( twitter.com)

10个月前 • NO CONTEXT HUMANS • 下载视频 0 评论

00:00:59