For around $150, plexiglass, water, lenses, and ordinary mirrors, professor of Physics at the University of Rochester John Howell built an uni-directional optical cloaking device. This video shows one of the devices and two of his sons

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For around $150, plexiglass, water, lenses, and ordinary mirrors, professor of Physics at the University of Rochester John Howell built an uni-directional optical cloaking device.

This video shows one of the devices and two of his sons

有趣
( twitter.com )

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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I feel bad for everyone around them…
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1年前 • non aesthetic things • -- 点击 • 下载视频 0 评论

00:00:56

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He was fighting for his life to not turn around lol
有趣
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1年前 • Lance🇱🇨 • -- 点击 • 下载视频 0 评论

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Thank you to for showing me around Copenhagen and its beautiful historic canal in Nyhavn!
IT技术
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2年前 • Tim Cook • -- 点击 0 评论

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Sold at auction for $ 2,220,000
Could have achieved a lot less when the interest rate was around 2%.
时政
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2年前 • ParraPower • -- 点击 0 评论

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Iranian actress Sadaf Baghbani was shot with 150 pellets by lslamic regime in Iran for protesting for women’s rights.
时政
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1年前 • Azat • -- 点击 • 下载视频 0 评论

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Here are the losses for yesterday that I just now got around to finishing. (still recovering from the monster news day 2 days ago)
时政
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1年前 • Andrew Perpetua • -- 点击 0 评论

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Tucker Carlson interview with Donald Trump got 265 million impressions on 𝕏.

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🔥 Russia: The Kavkaz oil depot in Rostov has now been burning for around 54 hours. Hundreds of millions of dollars worth of Russian fuel destined for military use destroyed by a couple of cheap Ukrainian drones.
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Welcome to England, where mobs of migrant men can walk around terrorizing locals and the police attack the locals for defending themselves. Make it make sense.
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Autocrats have a new playbook for undermining freedom not only within but outside their borders. Here are 3 lessons from democracies around the world about fighting back. 👇

For more, read "Defending Democracy in an Age of Sharp Power."
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Apple's next big thing could be a personal robot for your home, according to 🤖
The robot would "follow users around their homes" and one use case could be doing chores for you, like cleaning dishes.
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The story of the family who barely escaped death, wading in the Pacific Ocean for five hours while wildfires and hurricane winds roared around them in Maui

[full story: ]

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A 150 ft. Iceberg passing through Iceberg Alley near Twillingate, Newfoundland, Canada. A great view for your morning coffee.
📷 Doreen Dalley
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1年前 • Curiosity • -- 点击 0 评论

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Join us live for #Taiwan’s inauguration ceremony beginning at 8:45 AM (GMT+8). To our friends across Taiwan & around the world, your support empowers us as we move forward strong & unified.
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1年前 • 賴清德Lai Ching-te • -- 点击 0 评论

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Playful wolf cubs caught on CCTV in the Dutch Veluwe

For 150 years, wolves were absent from the Netherlands. Now repopulation begins

[📹 Frank Theunissen]

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2年前 • Massimo • -- 点击 • 下载视频 0 评论

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Love letter to to which I very happily switched to for my personal notes. My primary interest in Obsidian is not even for note taking specifically, it is that Obsidian is around the state of the art of a philosophy of software and what it could be.
- Your notes are…
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🎉Fools'R'us × Kenny🎉

An 🍎ple a day ~ Keep IQ away🤡
非常有趣的一个项目，愚人节发射

🎁5 x foolist（AirDrop）

To Enter:
1⃣Follow…
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The ink brush was invented in China around 300 BCE and mainly used for calligraphy. The early version found a bamboo tube securing a bundle of hair

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[📹 craftsman0011: ]

有趣
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Chairman ’s strategy for hard power deterrence of Beijing and America’s adversaries around the world…👇

“Deterrence by diplomatic scolding doesn’t work.

Deterrence by economic punishment doesn’t work.

You need the capability to deny your adversary their…
时政
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Ep. 94 The social media app Telegram has over 900 million users around the world. Its founder Pavel Durov sat down with us at his offices in Dubai for his first on-camera interview in almost a decade.
时政
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1年前 • Tucker Carlson • -- 点击 • 下载视频 0 评论

00:58:28

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I'm honored to be joined by ambassadors, representatives, & friends from around the world in celebrating a new chapter in #Taiwan’s story. Your support is profoundly meaningful as we work alongside the international community as a force for good.
时政
( twitter.com)

1年前 • 賴清德Lai Ching-te • -- 点击 0 评论

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Happy #LunarNewYear from #Taiwan🇹🇼 to everyone around the world! Special gratitude to allies, partners & friends who share our democratic values for the tremendous support. Wishing you all warm family gatherings & a peaceful & prosperous #YearOfTheDragon🐉!
时政
( twitter.com)

1年前 • 外交部 Ministry of Foreign Affairs, ROC (Taiwan) 🇹🇼 • -- 点击 0 评论

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John Harrison, served as the "Official Taste Tester" for Dreyer's ice cream, tasting around sixty flavors daily without consuming them. He aided in creating over a hundred unique flavors and claims to have invented Cookies n' Cream
📹 historyphotographed
时政
( twitter.com)

1年前 • Science girl • -- 点击 • 下载视频 0 评论

00:00:31

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