霍金与黑洞学说【英文】Hawking分析
关于霍金的作文英文
关于霍金的作文英文英文：Stephen Hawking was a brilliant physicist who has made many important contributions to our understanding of the universe. He was known for his groundbreaking work on black holes and the nature of time, as well as his popular science books that made complex concepts accessible to the general public.One of the things that I admire most about Hawking is his perseverance in the face of adversity. He was diagnosed with a rare form of motor neuron disease at the age of 21, which gradually left him paralyzed and unable to speak. Despite these challenges, he continued to work and communicate through the use of a computerized voice synthesizer, and became an inspiration to many people around the world.Another aspect of Hawking's legacy that I findinspiring is his commitment to using science to improve the lives of people everywhere. He was a strong advocate forthe importance of scientific research and education, and believed that science could help us solve some of theworld's most pressing problems.Overall, I believe that Stephen Hawking's life and work serve as a reminder of the power of human curiosity and determination. He showed us that even in the face of seemingly insurmountable obstacles, we can still make important contributions to the world around us.中文：史蒂芬·霍金是一位杰出的物理学家，他为我们对宇宙的理解做出了许多重要贡献。
StephenHawking短文英汉对译
StephenHawking短文英汉对译Stephen Hawking, a world famous British physicist,--- 短文英汉对译Stephen Hawking, a world famous British physicist, will write a children's book with his daughter. Hawking said the book will be "a bit like Harry Potter" but without the magic. "It explains the wonders of the universe(宇宙)," said Hawking, while he was on a visit to Hong Kong last week.Hawking, 64, is probably the world's most famous scientist after Albert Einstein. He is an expert on black holes. He has put his whole life into digging into the beginning (and the end) of the universe."My goal is simple," Hawking once said. "It is to completely understand the universe, why it is as it is and why it is there at all."Hawking has a bad illness that stops him from moving or talking. For a period of time, he had no way to communicate except by blinking(眨眼).Now he sits on a wheelchair with a computer by his side. To communicate, he moves two fingers to control the computer's mouse. He selects his words from the screen, which are then spoken by a voice synthesizer(音响合成器)."I have had the disease for most of my life," Hawking once said. "Yet it has not stopped me from being successful at my work."Although Hawking is such a disabled man, he made great achievements. He has received many awards and prizes for his work over the years. This includes winning the Albert Einstein Award. It is the highest achievement in theoretical physics(理论物理).闻名遐迩的英国物理学家斯蒂芬霍金，将与他女儿一道编写一部孩子们的书籍。
英语作文霍金的故事简介
英语作文霍金的故事简介英文：Stephen Hawking was a renowned physicist and cosmologist who made groundbreaking contributions to our understanding of the universe. He was born in 1942 in Oxford, England, and showed an early interest in science and mathematics. However, at the age of 21, he was diagnosed with amyotrophic lateral sclerosis (ALS), a motor neuron disease that gradually paralyzed him over the years.Despite his physical limitations, Hawking continued his research and became a professor at the University of Cambridge. He is best known for his work on black holes and the theory of relativity, as well as his popular science books such as "A Brief History of Time." His ability to communicate and work despite his severe disability made him an inspiration to people around the world.Hawking's story is a reminder that determination andpassion can overcome even the most daunting obstacles. His famous quote, "However difficult life may seem, there is always something you can do and succeed at," resonates with people facing challenges in their own lives.中文：史蒂芬·霍金是一位著名的物理学家和宇宙学家，他对我们对宇宙的理解做出了开创性的贡献。
霍金与黑洞学说【英文】Hawking
Hawking and Black Holes
Outline: The scientist Information and black holes Hawking radiation Detection of black holes Bets on black holes
The Scientist
equal to the Schwarzschild radius of
the black hole.
• What is inside the event horizon cannot
be known by anyone outside because
even light cannot escape out.
writing, turning a key in a lock Atrophy of hand muscles Atrophy of tongue Difficulty chewing food Difficulty swallowing (dysphagia) Difficulty speaking Muscle cramp
Born 1942 1st class honours from Oxford, after “not
very much work” Symptoms of ALS during Oxford years PhD and Research Fellow in Cambridge Discovered Hawking radiation in 1974 “A Brief History of Time” published in 1987 Numerous honorary degrees and awards Outspoken for world peace, welfare of the
斯蒂芬·霍金英语介绍
斯蒂芬·霍金是以研究是宇宙起源和黑洞闻名于世的。
Stephen Hawking is famous for his research on the origin of the universe and black holes.他做了穿气管手术，因为患有肺炎。
被彻底剥夺了说话的能力，演讲和问答只能通过语音合成器来完成。
霍金的轮椅和语音机器的计算机生成的独特电脑声很容易被世界各地认出来。
He had a tracheotomy because of pneumonia. Being completely deprived of the ability to speak, speech and question-and-answer can only be accomplished through a speech synthesizer. Hawking's wheelchair and voice machine generate unique computer sounds that are easily recognized around the world.我觉得霍金最鼓舞人心的地方是不怕困难的精神。
他患有运动神经元疾病，当时医生曾诊断身患绝症的他只能活两年，I think Hawking's most inspiring place is the spirit of not afraid of difficulties. He suffered from motor neuron disease, when doctors diagnosed him with terminal illness and he could only live for two years.可他一直坚强地活了下来。
成为世界上存活时间最长的病人之一。
2009年，他不再能独立驾驶他的轮椅，他的呼吸越加困难，时常需要使用人工呼吸器，还有几次严重到需要去医院诊疗。
霍金英文例子作文
2019-2020学年浙江省杭州市萧山区高桥初中八年级（上）竞赛数学试卷（12月份）一、选择题（共12小题，每小题3分，满分36分）A ．125的平方根是±15B ．±3都是27的立方根C ．16的算术平方根是4D ．-9是81的一个平方根1．（3分）下列说法不正确的是（ ）A ．3，5，3B ．4，6，8C ．7，24，25D ．6，12，132．（3分）以下列各组数据为边长作三角形，其中能组成直角三角形的是（ ）A ．55°B ．35°C ．25°D ．30°3．（3分）如图，在平行四边形ABCD 中，CE ⊥AB 且E 为垂足．如果∠A =125°，则∠BCE =（ ）A ．155=3B ．116+125=14+15=920C ．(−2)2=22=2D ．(−3)×(−2)=−3×−24．（3分）下列计算正确的是（ ）√√√√√√√√A ．1个B ．2个C ．3个D ．4个5．（3分）观察下列银行标志，从图案看既是轴对称图形又是中心对称图形的有（ ）个．A ．6到7之间B ．7到8之间C ．8到9之间D ．9到10之间6．（3分）估计32×12+20的运算结果应在（ ）√√√A ．A 图B ．B 图C ．C 图D ．D 图7．（3分）在下图右侧的四个三角形中，不能由△ABC 经过旋转或平移得到的是（ ）A ．甲量得窗框两组对边分别相等B ．乙量得窗框的对角线相等C ．丙量得窗框的一组邻边相等D ．丁量得窗框的两组对边分别相等且两条对角线也相等8．（3分）甲、乙、丙、丁四位同学到木工厂参观时，一木工师傅要他们拿尺子帮助检测一个窗框是否是矩形，他们各自做了如下检测：检测后，他们都说窗框是矩形，你认为最有说服力的是（ ）A ．72°B ．108°C ．144°D ．216°9．（3分）如图，该图形围绕自己的旋转中心，按下列角度旋转后，不能与其自身重合的是（ ）A ．32B ．23C ．42D ．3310．（3分）如图，△ABC 是等腰直角三角形，BC 是斜边，将△ABP 绕点A 逆时针旋转后，能与△ACP ′重合，如果AP =3，那么PP ′的长等于（ ）√√√√A ．b ≠0B ．b =0C ．b ≥0D ．b ≤011．（3分）若以a 2−a =b ，则b 的取值范围是（ ）√A ．112.5°B ．120°C ．122.5°D ．135°12．（3分）如图，延长正方形ABCD 的一边BC 至E ，使CE =AC ，连接AE 交CD 于F ，则∠AFC 的度数是（ ）二、填空题（共6小题，每小题4分，满分24分）三、解答题（共6小题，满分60分）13．（4分）化简(−4)2= ．√14．（4分）在平行四边形ABCD 中，若AB =3cm ,BC=4cm ,则平行四边形ABCD 的周长为 cm .15．（4分）如图，在数轴上，A ，B 两点之间表示整数的点有 个．16．（4分）一个多边形的内角和等于它的外角和的5倍，那么此多边形的边数为 ．17．（4分）如图，在梯形ABCD 中，AD ∥BC ，AB =AD ，BC =BD ，∠A =120°．则∠C = 度．18．（4分）已知菱形的两对角线长分别为6cm 和8cm ,则菱形的面积为 cm 2．19．（12分）计算：（1）340−25−2110（2）12+273√√√√√√20．（8分）老师准备测量一段河水的深度，他把一根竹竿插到离岸边1.5m 远的水底，竹竿露出水面的部分刚好0.5m ,把竹竿的顶端拉向岸边，竿顶和岸边的水面刚好相齐，请你帮老师计算河水的深度是多少米？21．（8分）把如图所示的图案，绕点O 依次顺时针旋转90°，180°，270°，你将会得到一个美丽的图案，请作出该图案．22．（10分）如图，在Rt△OAB中，∠OAB=90°，OA=AB=6，将△OAB绕点O沿逆时针方向旋转90°得到△OA1B1．（1）线段OA1的长是，∠AOB1的度数是；（2）连接AA1，求证：四边形OAA1B1是平行四边形；（3）求四边形OAA1B1的面积．23．（10分）如图，在梯形ABCD中，AD∥BC，AB⊥AC，∠B=45°，AD=2，BC=42，求DC的长．√√24．（12分）将平行四边形纸片ABCD按如图方式折叠，使点C与A重合，点D落到D′处，折痕为EF．（1）求证：△ABE≌△AD′F；（2）连接CF，判断四边形AECF是什么特殊四边形？证明你的结论．。
介绍霍金的英文作文
介绍霍金的英文作文英文回答：Stephen Hawking was a renowned theoretical physicist, cosmologist, and author. He was born on January 8, 1942, in Oxford, England. Hawking is best known for his work on black holes and the theory of relativity. His book "A Brief History of Time" became a bestseller and brought complex scientific concepts to a wider audience.Hawking was diagnosed with ALS, a motor neuron disease, at the age of 21. Despite being wheelchair-bound and unable to speak without the use of a voice synthesizer, he continued his groundbreaking work in theoretical physics. His determination and resilience in the face of adversity inspired many people around the world.One of the things that I find most fascinating about Hawking is his ability to communicate complex scientific ideas in a way that is accessible to the general public. Hehad a gift for using analogies and everyday language to explain difficult concepts. For example, he famously described black holes as "the point of no return" and compared the behavior of black holes to the way that cream mixes into coffee.中文回答：史蒂芬·霍金是一位著名的理论物理学家、宇宙学家和作家。
有关霍金英文作文
有关霍金英文作文英文：Stephen Hawking, a world-renowned physicist and cosmologist, is one of the most influential scientists of our time. His contributions to the field of physics have been groundbreaking and have helped to shape our understanding of the universe.One of Hawking's most famous contributions is his work on black holes. He proposed that black holes emit radiation, which is now known as Hawking radiation. This discovery challenged the long-held belief that black holes were completely black and had no emissions.Another important contribution of Hawking's is his work on the origins of the universe. He proposed that the universe began as a singularity, a point of infinitedensity and temperature, and that it expanded rapidly in a phenomenon known as the Big Bang.Hawking's work has also had a significant impact on popular culture. He wrote several books, including "A Brief History of Time," which became a bestseller and helped to make complex scientific concepts accessible to the general public.Overall, Stephen Hawking's contributions to physics and cosmology have been immense and have helped to shape our understanding of the universe.中文：斯蒂芬·霍金，一位世界著名的物理学家和宇宙学家，是我们这个时代最有影响力的科学家之一。
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6
Dissecting a Black Hole
• A non-rotating black hole is particularly event horizon simple. • There is a point at the center called the singularity (奇點). It has zero size and infinite density. In fact, its properties cannot be described by currently known physics. • The event horizon (穹界) is a sphere centered at the singularity with radius equal to the Schwarzschild radius of the black hole. • What is inside the event horizon cannot be known by anyone outside because even light cannot escape oand Singularity
8
No-hair Theorem
Hair here means something complicated (e.g. different styles, colors, perms, etc…). Black holes have no hair because they are simple. Only three things completely characterize a black hole (Hawking 1972): – mass – angular momentum – electric charge
3 June 2006
Hawking and Black Holes
Outline: The scientist Information and black holes Hawking radiation Detection of black holes Bets on black holes
The Scientist
Amyotrophic Lateral Sclerosis
肌萎縮性脊髓側索硬化症 Also called Lou Gehrig’s disease Symptoms: Difficulty standing, walking, or running
Clumsiness – Frequent tripping or falls Difficulty with fine hand motions such as
5
The Black Hole Radius
2GM rs 2 c
For any mass, there is a smallest radius beyond which the object becomes a black hole. This smallest radius rs is called the Schwarzschild radius. Hawking: This defines the size of a black hole, and it depends on the mass only. Anything smaller than its corresponding Schwarzschild radius becomes a black hole.
Black Hole
Black holes represent the final victory of gravity. A black hole is black because gravity is so strong that light cannot escape. The escape velocity at a distance r from the center of an object with mass M is
4
Space Warps
If
we imagine the spacetime as a “rubber sheet”, then any mass would produce warpings in it. Since black holes produce very strong gravity, spacetime is significantly warped (curved) around them. We see strong light-bending and gravitational redshift.
Born
1942 1st class honours from Oxford, after “not very much work” Symptoms of ALS during Oxford years PhD and Research Fellow in Cambridge Discovered Hawking radiation in 1974 “A Brief History of Time” published in 1987 Numerous honorary degrees and awards Outspoken for world peace, welfare of the handicapped, and other current issues
buttoning,
writing, turning a key in a lock Atrophy of hand muscles Atrophy of tongue Difficulty chewing food Difficulty swallowing (dysphagia) Difficulty speaking Muscle cramp
v escape
2GM r
Light rays
The escape velocity increases with mass and decreases with radius. If vescape> c, then light cannot escape and we have a black hole.