Supermassive Black Holes 超大质量黑洞 - 3

A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets

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科学美国人60秒 SSS 2014-08-29

From the depths of space, an asteroid hurtles toward Earth. [Well, our general vicinity.] But this is no ordinary hunk of galactic debris. Because the body of this asteroid seems to defy gravity. Its bound by forces never observed on this scale in sp

失业英语对话-Reduced Payment(2)

A: I have a question about my payment and need someone to help me. B: Yes, I would be happy to answer a question about payment. What do you need help with? A: I cant figure out why my paycheck this week is smaller than last weeks. B: Did you generate

失业英语对话-Reduced Payment(1)

A: Is there someone I can talk to about a payment question? B: Yes, we can handle that here. How can I help you? A: My paycheck that just arrived is less than last weeks check. B: Did you work at all during the last pay period? A: Yes, actually, I di

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How Does Ice Cool Drinks? Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? Heat is a measure of molecular activity: the faster a

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The old man drove to Burger-Burger. He was 82 years old. It was late at night. It was 11:30 p.m. He was hungry. He wanted something to eat. He went to the drive-through. He ordered a Double Double Burger-Burger. He ordered large fries. He ordered a l

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Grammar Girl here. It was almost exactly a year ago when I did the first show about who versus whom. In that show I only covered the simple cases, and lately I've been getting questions that made me think I should delve deeper into the topic. So toda

美国发明家的电池技术或改变世界

American inventor John Goodenough first started working on battery technology more than 40 years ago. Goodenough actually co-invented lithium-ion batteries in 1980. This eventually led to a revolution in the electronics industry because those devices

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VOA标准英语2014--芝加哥的阿贡国家实验室正在研发未来电池

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DAVID GREENE, HOST: The Trump administration's rollback of coal plant regulations last week has renewed hopes for those in the industry that some plants might stay open a little longer. The share of coal in the country's energy mix has dropped dramat

2007年VOA标准英语-Airlines Looking to Lessen Environmental Impact

By Brian Padden Paris 21 June 2007 The airline industry has long sought to develop new technology to offset the rising cost of fuel, but the industry also has looked to make flying more energy efficient. This year at the Paris Air Show many companies

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Scientists from the University of Central Florida (UCF) have created a supercapacitor battery prototype that works like new even after being recharged 30,000 times. 来自中佛罗里达大学（UCF）的科学家已经创造了一个超级电容电池

英语词汇分类：物理

matter 物质 energy 能 vacuum 真空 liquid 液体 fluid 流体 solid 固体 body 物体 mass 质量 weight 重量 density 密度 specific gravity 比重 gravity 重力 velocity 速度 kinetic energy

VOA标准英语2009年-Discovering the Timeless Wisdom of Mac

American architectural photographer presents a new collection of images that give a glimpse into Incan genius for integrating architecture and nature Faiza Elmasry | Washington, DC 14 December 2009 Watch: Elmasry report voiced by Deborah Block Window

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This dark energy doesn't behave like any other substance we know at all and acts more like antigravity force. 这种暗能量的性质与我们所熟知的其他物质完全不同，它更像是反重力。 We say that it has a gravitational pressure

TED演讲:宇宙的灭亡(1)

Looking up at the night sky, we are amazed by how it seems to go on forever. 仰望夜空，我们为它的永无止境而感到惊讶。 But what will the sky look like billions of years from now? 然而数十亿年前的天空又会是什么样子呢

2016年CRI Tech Breakthrough on EVs Needs Unified Efforts: Political Adviser

After failing in Beijing's license plate lottery system for some three years, Qin Xiaofei finally made his decision in January to buy a battery-driven car to chauffeur his wife who has recently become pregnant. But, he says, one of the biggest concer