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Times are legion May 19, 2018

Posted by hslu in Knowledge, Science.
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Huh?

This physicist’s ideas of time will blow your mind.

http://flip.it/Pof4Dl

Source: Flipboard

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It blew mine.

Time, according to Rovelli, doesn’t exist if human beings aren’t there to experience it.

Rovelli suggeststhat “what we experience as time’s passage is a mental process happening in the space between memory and anticipation.

How do you like that for an explanation of “time”?

Read it. You’ll like it.

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Planet Vulcan, dark matter and dark energy May 7, 2018

Posted by hslu in Knowledge, Science.
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Troubled Times for Alternatives to Einstein’s Theory of Gravity

http://flip.it/mH0qjI

Interesting article about how alternative gravity theories to Einstein’s general relativity die because an event billions of light year away which has been predicted by theory has reached the earth and recorded by devices developed for that particular event.

Well, killing off old theories and replacing them with new ones is how science has worked in the past and it will be the way how science can stand up to the test of time in the future.

May be one of these days, human can travel at a speed close to the speed of light and boldly go where no one has gone before.

But, I doubt it that these future space travelers will ever meet any alien at all.

天書 May 3, 2018

Posted by hslu in Knowledge, Science.
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雖然是天書,讀起來還是很有意思。

有時候沒事,靜下來想想這個世界,這個宇宙, big bang 和 big bang 以前是怎麼來的也相當有趣。雖然這幾個問題在目前不可能有答案,偶爾看看天書,讓雜亂的心暫時遠離一下”柴米油鹽醬醋茶”和這個世界的亂像,讓腦筋轉一轉,動一動,心裏靜一靜對我的心身都有一點好處。

神,佛,菩薩,上蒼,天堂,地獄和輪迴是人編出來的,這是信仰的領域。這是幾千年以來人類受苦受難以後想出來的虛擬世界來安慰自己的。這跟人死了以後去那裏一樣,都沒有辦法經過科學的實驗來證實的。

我們這個神奇的宇宙是怎麼來的,在最近的將來也沒有辦法經過科學來證實。這就需要像 Einstien, Hawking 和 Hertog 這些聰明人來想辦法了。

Entanglement is weird enough. Entangled time? April 15, 2018

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If You Thought Quantum Mechanics Was Weird, Check Out Entangled Time

http://flip.it/IjGn5C

An enjoyable read and a weird concept very difficult to wrap my brain around it.

Beautiful: The Entire Known Universe in a Single Image January 17, 2018

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This Is What The Entire Known Universe Looks Like in a Single Image

http://flip.it/YemSO1

DAMPE & WIMPs December 2, 2017

Posted by hslu in China, Knowledge, Science, 中國.
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A pprobe detected a mysterious signal that physics can’t explain

http://flip.it/DHemoA

The spaceprobe entered the orbit in December 2015. It wss launched from the Jiuquan (酒泉) Satellite Launch Center in the Gobi Desert (戈壁沙漠), about 820 miles northwest of Xi’an (西安). 

DAMPE stands for Dark Matter Particle Explorer (DAMPE) while WIMPs are known as weakly interacting massive particles. The DAMPE spaceprobe was specifically designed to look for the indirect decay signal of the dark matter, the so-called WIMPs.

I don’t know that China is into this kind of research in astrophysics, the kind of research which doesn’t yield any immediate benefits, if ever, except advacing knowledge in space, time, and possibly the meaning of life and why we are here in this world.

This project will go on for 5 years.

You need to read this article September 24, 2017

Posted by hslu in Food, Health, Knowledge, Science.
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8 Myths About Sugar You Need to Stop Believing

http://flip.it/wgVaTk

Give me two pounds of jelly beans, please.

I know a few of them August 10, 2017

Posted by hslu in China, Computer, Global Affair, Science, Technology.
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What are the technologies from China that lead the world? 

by Gustavo Brown 

https://www.quora.com/What-are-the-technologies-from-China-that-lead-the-world/answer/Gustavo-Brown?share=4b96492b&srid=eBtU

Space, Eridanus Supervoid, ASASSN-15lh and more May 5, 2017

Posted by hslu in Do you know?, Knowledge, Science.
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Terrifying unexplained mysteries of deep space

https://www.airsassociation.org/services-new/airs-knowledge-network-n/airs-articles/item/19268-terrifying-unexplained-mysteries-of-deep-space

Source: AIRS, Corey Parker, grunge.com, Albert Lakey


Don’t forget the Great Attractor.

Terrifying indeed. But, you don’t need to lose sleep over it.

Trump will keep you up in the night anyway.

The Big Bang – or the Big Bounce? April 30, 2017

Posted by hslu in Knowledge, Science.
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The Big Bang – or the Big Bounce? – https://www.ft.com/content/f47b8310-0383-11e7-ace0-1ce02ef0def9 via @FT

Whether it is big bang or big bounce, this is by far the best and easiest-to-understand article about “Big Bang,” written by Sean Carrol for people with no knowledge of how space and time work in the universe that we are in now. It’s an easy and enjoyable read.

Credit: Caleb Charland, Getty. Source: Financial Times.

I am sure you have questions like: 
。What’s before the “big bang?” 

。Did the “big bang” bring with it the beginning of time?

。Was there no time before the “big bang?”

The scientists have no answers for us common folks just yet. They might in a decade or a century. 

But who is counting? After all, the universe has existed for 13.8 billion years, give or take a few millions. 

It can wait.

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