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内容简介:
PHD Comics creator Jorge Cham and particle physicist Daniel Whiteson have teamed up to spelunk through the enormous gaps in our cosmological knowledge, armed with their popular infographics, cartoons, and unusually entertaining and lucid explanations of science.
In We Have No Idea, they explore the biggest unknowns in the universe, why these things are still mysteries, and what a lot of smart people are doing to figure out the answers (or at least ask the right questions). While they’re at it, they helpfully demystify many complicated things we do know about, from quarks and neutrinos to gravitational waves and exploding black holes. With equal doses of humor and delight, they invite us to see the universe as a vast expanse of mostly uncharted territory that’s still ours to explore.
This entertaining illustrated science primer is the perfect book for anyone who’s curious about all the big questions physicists are still trying to answer.
作者简介:
Jorge Cham is the creator of the popular online comic Piled Higher and Deeper, popularly known as PHD Comics. He earned his PhD in robotics at Stanford.
Daniel Whiteson is a professor of experimental particle physics at the University of California, Irvine, and a fellow of the American Physical Society. He conducts research using the Large Hadron Collider at CERN.
Their PHD TV videos have been viewed millions of times on YouTube and aired on PBS.
What Is the Universe Made of
What Is Dark Matter
What Is Dark Energy
What Is the Most Basic Element of Matter
The Mysteries of Mass
Why Is Gravity So Different From the Other Forces
What Is Space
What Is Time
How Many Dimensions Are There
Can We Travel Faster Than Light
Who Is Shooting Superheats Particles at the Earth
Why Are We Made of Matter, Not Antimatter
What Happened During the Big Bang
How BIG Is the Universe
Is There a Theory of Everything
Are We Alone in the Universe
· · · · · · (收起)
原文摘录:
有更重要的带电粒子，它们会对人体这一“精密装置”构成威胁。质子和原子核就是这种粒子。高能质子可以撕裂人体。宇航员要特别小心，并确保始终能有效防护高能质子，这比记得涂防晒霜复杂多了。除此之外，太阳像任何巨大的火球一样难以预测。大多数时候，它以极高的温度对我们“小火慢煎”，但有时它也会消化不良，从而出现耀斑。耀斑会将等离子束发射到遥远的太空，并释放出额外的有害粒子。任何置身太空中的人都时刻注意和太阳有关的精准天气预测，一旦探测到这种耀斑就要立刻采取额外的防护措施。关键是，每时每刻都有无数太空粒子在击打着地球，而且它们携带着很多能量。 (查看原文)
闻夕felicity
1赞
2022-04-06 14:57:30
—— 引自章节：11 谁在向地球发射超高速粒子？
是的，我们每天被数以百万计的超高能粒子连续轰炸，却不知道它们是怎么来的。如果你让天体物理学家（基于现有知识）估计太空中的粒子最快能达到什么速度[插图]，他们会：（1）感谢你提出这么棒的问题；（2）举出一些极端的例子，比如爆发的超新星喷射出来的粒子，或者被黑洞像弹弓一样抛射出去的粒子；（3）仍然给不出令人满意的答案。基于目前我们对宇宙中事物的了解，太空中粒子所能达到的最高能量约为1017eV，这仍比每天击中地球的那些超高能粒子弱上千倍。 (查看原文)
闻夕felicity
1赞
2022-04-06 14:57:30
—— 引自章节：11 谁在向地球发射超高速粒子？