TED - Henry Lin: What we can learn from galaxies far, far away

TED HenryLin large-scale galaxy-cluster index

"yes, we need to focus, yes, we need to concentrate, but we also need to remember that innovation, ingenuity, inspiration -- these things come when we broaden our field of vision when we step back when we zoom out. And I can't think of a better way to do this than by studying the universe around us."

九五后Henry Lin (1995——），2013年获Intel Science and Engineering Fair奖，当年高中毕业。

TED-2014-Lin-galaxy

• mathematical models of distant galaxy clusters. 《通信的数学理论》
• to describe galaxy clusters is to describe the experiments that you can do with them. 理论处理的对象，实验处理的对象，计算机处理的对象。面向对象。

1. probing the very big

• It is so massive that the light passing through it is being bent. 时空弯曲

2. The second things is very hot (plasma)

• million-degree gas -- in fact, it's plasma. The extreme gravity of these systems is accelerating particles of gas to great speeds, and great speeds means great temperatures. 速度决定温度，速度决定质量 $m=\frac{m_0}{\sqrt{1- v^2/c^2}}$，速度决定激情！《新基督山伯爵》：在监狱里老头教主角剑术。《功夫》：天下武功不坚不破唯快不破。

3. probing the very small (dark matter)

• Most of the universe's matter is not made up of atoms. You were lied to. Most of it is made up of something very, very mysterious, which we call dark matter. 暗物质，暗能量，暗信息。超越无理数
• the reason why galaxy clusters can teach us about the physics of the very small, is precisely because they are so very big. 大数据，微结构。以柔克刚。

4. the physics of the very strange (dark energy)

• the problem with the large-scale structure of the universe is that it's horribly complicated. Here is a computer simulation. 复杂系统，大数据
• I can learn a lot about the universe at the largest scales by tracking its biggest pieces and those biggest pieces are clusters of galaxies.

They are not faster horses. They will require an enormous amount of scientific ingenuity.
So, yes, we need to focus, yes, we need to concentrate, but we also need to remember that innovation, ingenuity, inspiration -- these things come when we broaden our field of vision when we step back when we zoom out. And I can't think of a better way to do this than by studying the universe around us.