Science

牛顿故居巡礼

牛顿故居巡礼 路途遥遥 最后更新于:2012-08-11 07:13 在阳光明媚的秋日,驱车前往英格兰东部的林肯郡,拜访一位我从小就无比崇仰的大科学家,一位改变世界的伟大天才。经过小镇Grant......

The Power of Science Posse

Mike Lovett Samia Tamazi ’20 PAGE 2 OF 3 In 2006, Epstein won a four-year $1 million grant from the Howard Hughes Medical Institute to develop a Posse program specifically for students from the New York City area interested in the sciences. (The grant was renewed in 2010.) Associate professor of biology Melissa Kosinski-Collins, who has published widely on science education, believed incoming Science Posse students needed exposure to college-level science before the chaos of Orientation in late August and the transition to a full schedule of college classes. EnterRead More

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复盘:柯洁真胜天半子

2017-05-25 18:24:01 来源: 网易体育 网易体育5月25日报道: 第二次人机大战三番棋今天继续进行,经过3个半小时的激战,柯洁执白155手中盘告负,AlphaGo取得2:0的领......

What’s Up With That: How a Swinging Pendulum Proves the Earth Rotates

Foucault’s Pendulum at Museu de les Ciències Príncipe Felipe in Valencia (Spain). Photo: Manuel M. Vicente/Wikimedia Commons ONCE UPON A time, you were probably on an elementary school field trip at a science museum or an observatory. Just before lunch, your teacher had the class stand in a circle around an enormous weight suspended on a string, and watch it swing back and forth, back and forth. The teacher (or maybe a tour guide) explained that if you watched the pendulum for long enough, it would seem to alter itsRead More

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中国人不应遗忘的名字汤飞凡

(注:原文有所删节) 作者:京虎子 一、心中萦绕的名字 … 几十年过去,这个名字已经获得了原本属于他的名誉和地位。但无情的岁月和我们这个善于向前看、乐于健忘的民族使这个名字渐渐沉入历......

爱因斯坦都不敢想象,我们真的探测到引力波!

爱因斯坦都不敢想象,我们真的探测到引力波! 陈雁北(加州理工学院) 范锡龙(湖北第二师范学院) 知社学术圈特约作品,媒体转载,请联系授权 1915年,爱因斯坦发表广义相对论论文,革新了自牛顿以来......

Transistors: the fundamental IC

Transistors   by Chris Woodford. Last updated: September 9, 2016. Your brain contains around 100 billion cells called neurons—the tiny switches that let you think and remember things. Computers contain billions of miniature “brain cells” as well. They’re called transistors and they’re made from silicon, a chemical element commonly found in sand. Transistors have revolutionized electronics since they were first invented over half a century ago by John Bardeen, Walter Brattain, and William Shockley. But what are they—and how do they work? Photo: An insect with three legs? No, a typical transistor onRead More

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IC inventor- The Nobel Prize in Physics 2000-Jack S. Kilby – Biographical

The Nobel Prize in Physics 2000-Jack S. Kilby – Biographical Zhores Alferov, Herbert Kroemer, Jack Kilby The Nobel Committee has asked me to discuss my life story, so I guess I should begin at the beginning. I was born in 1923 in Great Bend, Kansas, which got its name because the town was built at the spot where the Arkansas River bends in the middle of the state. I grew up among the industrious descendents of the western settlers of the American Great Plains. My father ran a small electricRead More

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Integrated circuits

Integrated circuits by Chris Woodford. Last updated: April 18, 2016. Have you ever heard of a 1940s computer called the ENIAC? It was about the same length and weight as three to four double-decker buses and contained 18,000 buzzing electronic switches known as vacuum tubes. Despite its gargantuan size, it was thousands of times less powerful than a modern laptop—a machine about 100 times smaller. If the history of computing sounds like a magic trick—squeezing more and more power into less and less space—it is! What made it possible was the invention ofRead More

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DDoS & IoT – A ‘Perfect’ Storm

DDoS & IoT – A ‘Perfect’ Storm OCT 28, 2016  Author: Angus Macrae A perfect storm is definitely brewing. Severe and hazardous internet weather warnings have been out there for some time now, and last week’s DDoS downpour on Dyn, along with the escalating events leading up to it, may prove to be a mere shower compared to what is yet to come. Let’s start by considering another type of forecast, that of the projected numbers for theInternet of Things (IoT). We are currently told there will be 20 billion ‘things’Read More

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美国大规模断网调查:病毒感染中国产监控设备

2016-10-23 12:29:07 来源: TECH2IPO创见(北京)举报 你能想象吗,让美国人民经历噩梦般周五的大规模断网事件,居然是国产的网络摄像头导致的…… 你能想象吗,让美国人民经......

From sand to hand: How a CPU is made

BY RICK HODGIN 07.09.2009 :: 3:40PM EDT Recently, Intel has published a page showing the step-by-step process of how a CPU is made. From sand to its final product, there are many complex steps involved. In fact, it’s absolutely amazing that semiconductor products work at all. Step 1 – Sand At about 25% (by mass), silicon is the second most frequent chemical in the earth’s crust (behind oxygen). Sand has a high percentage of Silicon Dioxide (SiO2), which is the base ingredient for semiconductor manufacturing. Step 2 – Melted Silicon SiliconRead More

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乐视将于11月初在美国销售智能手机和智能电视

乐视在旧金山举行的一个活动上表示,将于11月2日在美国市场开售智能手机和智能电视。乐视表示,在美国将以399美元的价格销售64GB存储量、5.5英寸显示屏的Le Pro S3智能手机,初期折扣为......

人类绘制细胞图谱 然其应用前景却遭质疑

人类绘制细胞图谱 然其应用前景却遭质疑 2016-10-18 00:06:50 来源: 第一财经举报 原标题:人类绘制细胞图谱 应用前景遭质疑) 科技 钱童心 近日,来自全世界的一群顶级科学家齐......

Nobel economics prize won by Oliver Hart and Bengt Holmström

Nobel economics prize won by Oliver Hart and Bengt Holmström Pair’s work is described as key to understanding contracts and institutions that hold today’s economies together  Hart and Holmström drew praise and congratulations from fellow economists. Illustration: NobelPrize.org Katie Allen and Graeme Wearden This year’s Nobel prize in economics has been awarded to UK-born Oliver Hart and Bengt Holmström of Finland for their work on contract theory, which has covered a range of issues from public-private partnerships to executive pay. As it announced the prize, the Royal Swedish Academy of Sciences describedRead More

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Enter the S^4 Super Summer Science Search Contest 1

Science to the Rescue! CUSD Middle School Students Tackling Tough Problems in Fourth Annual S^4-Super Summer Science Search™ Contest Can science solve the community’s most pressing problems? We’re inviting all outgoing 6th, 7th and 8th graders living in the Cupertino Union School District (CUSD) to find out by entering our 2015 S^4-Super Summer Science Search™ Contest, a free community program entering its fourth year. The contest features fun group study sessions and great prizes, while also offering a chance to develop skills in research and critical thinking. Students will gain valuableRead More

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物体为啥会起皱?一个简单方程解释一切

长久以来,麻省理工的工程师佩德罗·里斯(Pedro Reis)一直对物体如何褶皱有着浓厚的兴趣。比方说,与光滑球体相比,像高尔夫球那样遍布凹点的表面空气阻力更小。里斯想,如果一个飞行物体可以在指......

科学家称当地球坠入黑洞人类将无法感知

图集详情: 【环球科技综合报道】据英国《每日邮报》6月17日报道,最近一篇国外刚发表的论文称,站在黑洞表面会复制一个近乎一模一样的你。“毛毛球”理论称,黑洞的边界不会毁灭掉所有它触碰到的事物。相......

美科学家发现亮度超太阳300万亿倍星系

2 网易科技讯 5月22日消息,据美国媒体报道,科学家们使用NASA(美国宇航局)广域红外巡天探测卫星(WISE)的数据,发现了一个亮度超过太阳300万亿倍的遥远星系。这是迄今为止人类发现的亮度......

科学家们玩嗨了 太阳系危险

伽马射线暴即便只持续几分钟,释放的能量也要比太阳一生中所释放的能量还要多,而现在,科学家准备建造世界上最强大的激光器,在地球上制造一次高能伽马射线暴。 以现有的技术建造伽马射线暴是不可能的,但是......

清华大学在美国办学,微软投了4000万美元

即将建成的全球创新学院大楼效果图。        技术发展是近年来中美两国高校关注的重点。据清华大学官网和彭博社报道,为探索解决全球性挑战,促进新技术的研究进展,北京时间6月19日,清华大学和美......

百度就吹捧可疑的人工智能成就道歉

TOMOHIRO OHSUMI/BLOOMBERG NEWS 百 度(Baidu Inc.)近来报喜称,已在一项备受关注的人工智能标准化测试中击败谷歌(Google Inc.)和微软(Micro......

美总统竞选女参选人:中国人擅长考试但没想象力

费奥里娜(资料图) 参加美国总统竞选的惠普前女CEO卡莉·费奥里娜 在西方,总有一拨人靠着发表辱华言论吸引眼球,借此捞取知名度和个人利益,尤其是当他们在竞选政治职位之时。目前,这个名单上又多了本......

华尔街最近在担忧什么?答案是千禧危机的表亲:闰秒。

华尔街最近在担忧什么?答案是千禧危机的表亲:闰秒。 眼下,交易员和交易所管理人士正在为最近将要出现的一个事件做准备。如果计算机系统没有调试好,那么一次看似无伤大雅的时间调整或许会演变成一场灾难。......

科幻成现实? 谷歌无人驾驶汽车上路测试

本月15号,谷歌公司公布全球首款全自动无人驾驶汽车将于今年夏季在美国加利福尼亚州芒廷维尤的街头进行城市道路环境的测试,车速将会限制在25英里每小时(约合40公里每小时)。这是谷歌无人车第一次在实......

在谷歌无人驾驶汽车眼中,人类是如何开车的?

2015-05-12 04:02:13 来源: 虎嗅网 虎嗅注:本文是 Google 无人驾驶项目总监 Chris Urmson 发表在 Medium 的文章,由虎嗅编译。 作者按:170 万英......

史上署名人数最多论文出炉 5154名科学家合著

网易科技讯 5月18日消息,据国外媒体报道,学术期刊《物理评论快报》日前发布了一篇论文,对希格斯玻色子的质量做出了目前为止最为精确的估算。不过,让这篇论文成为新闻的并非它的内容,而是它的作者数量......

How Minecraft Teaches Kids Real-World Skills

The point of Minecraft seems simple: build practically anything you can imagine. Some kids recreate famous pieces of architecture, others express their creativity through grand designs. Since 2009, Minecraft has sold over 20 million copies. And if that seems like a typical blockbuster, don’t be fooled — it isn’t. Graphics are boxy and blurry, and sounds are primitive at best. So why do kids obsess over it? I gather a handful of 5-to-13-year-olds. I want to know why they love about it and what they get out of it. I expect simpleRead More

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NASA成功测试曲速引擎 赴月球或仅需4小时

模拟图 央广网北京5月6日消息 据中国之声《新闻纵横》报道,你旅行去过最远的地方是哪里呢?美洲、大洋洲还是南极洲?对于科学家而言,太空早已成为人类可旅行的目标。据英国《每日邮报》网站日前报道,美......

苹果Apple Watch发售当天店里不会供货

Reuters 苹果Apple Watch将于4月24日开始发售。 苹 果公司(Apple Inc.,AAPL)的Apple Watch将于4月24日开始发售,但民众可能无法立即在店里买到。 苹......