天空堤壩 5

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友情方面,你可以選擇,只要對方的優點;
愛情方面,你不可以選擇,不要對方的缺點。

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友情方面,你可以選擇,只要對方最好的優點;
愛情方面,你不可以選擇,不要對方最差的缺點。

— Me@2010.06.01

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2010.06.03 Thursday copyright ACHK

Quantum Gravity 2

Points of tension

There are two other points of tension between quantum mechanics and general relativity.

* First, classical general relativity breaks down at singularities, and quantum mechanics becomes inconsistent with general relativity in the neighborhood of singularities (however, no one is certain that classical general relativity applies near singularities in the first place).

* Second, it is not clear how to determine the gravitational field of a particle, since under the Heisenberg uncertainty principle of quantum mechanics its location and velocity cannot be known with certainty. The resolution of these points may come from a better understanding of general relativity.

— Wikipedia on Quantum gravity

2010.06.03 Thursday ACHK

未來人

網誌時代 2

最差的情況,是現在暫時一個讀者都沒有。但是,那也不算是真的十分差。因為只要把文章發表於網誌上,文章就一直會存在於互聯網中,不會消失(,除非網誌公司倒閉)。只要文章有意思,時間足夠長,總會有知音人搜尋發現到。

由現在等到有第一個讀者,可能要一年。由有第一個讀者,等到有一萬個讀者,可能要五百年。到我的網誌「成功」時,時間可能已經是公元 2510 年。那也沒所謂,因為最起碼,我有一些有意義的思想存在到那個年代,留給後人。

— Me@2010.06.02

2010.06.03 Thursday (c) All rights reserved by ACHK