우주의 팽창에 관하여

우주가 팽창한다는 것은 어떤 의미인가?

신神이 우주를 창조한 것이 아니라면,

우주의 물리법칙은 하나(the one)다



시간과 공간은 별개의 개념이 아니다.

시공간이라는 하나의 개념이다.

시간과 공간은 대칭성을 가진다.

시간은 공간이고 공간은 시간이다.

시간과 공간을 맞바꾸어도 물리법칙은 변하지 않아야 한다.

인간은 눈에 보이고 감각되는 공간을 중심으로 생각하도록 진화되어 온 생명체다. 천동설에서 지동설로의 패러다임 변환 과정에서 겪었던, 생각의 중심에 있던 지구를 빼내고, 그 자리에 태양을 집어넣는 일이 결코 쉬운 일은 아니었겠지만, 생각의 중심에 있는 공간을 빼내고, 그 자리에 시간을 집어넣는 일에 비하면 쉬운 일이다.

머리말__5



제1장　재료 다듬기 9

1 만유척력萬有斥力···········································11

2 초팽창(인플레이션) ··········································13

3 상대성이론의 듀얼(Dual) ································17

4 길이 팽창 ·····················································20

5 추락하는 것은 중력이 없다 ···························24

6 빛은 운동하지 않는다 ···································27

7 케플러 법칙 ··················································31

8 시간과 공간의 대칭성 ·································33

9 중력의 척력 ··················································37

10 블랙홀 속의 우주 ··········································41

11 마탄의 역설 ··················································44

12 자기력磁氣力·················································46



제2장　요리하기 49

1 왜 멀리 있는 것은 작게 보일까? ···················51

2 왜 커피는 뜨거운 물에서 더 잘 녹을까? ·······56

3 왜 무거운 것이나 가벼운 것이나 똑같은

속도로 떨어질까? ·········································58

4 확률론(코펜하겐 해석) ·······································60

5 가상의 물질과 가상의 에너지 ·······················62

6 베타 붕괴(약력) ··············································68

7 입자설粒子說·················································71

8 호이겐스 원리에 입각한 콤프턴 효과의

재해석 ··························································75

9 힉스 입자(힉스 메커니즘) ··································82

10 이중 슬릿 실험 ·············································85

11 차원(dimension) ··············································88

12 화이트홀 ······················································92

13 도플러 효과 ··················································95

14 물질파(드브로이파) ··········································97



제3장　마무리 99

1 과학은 장난감 블록 쌓기 ····························101

2 Hello Timetry! ············································103

3 홀로그램 우주 ············································109



저자의 변辯__114

엄장필 저자 엄장필은 강원도 영월에서 태어났다. 관련 전공자가 아닌 평범한 직장인이지만 평소 천체 물리학에 관심이 많았다. 과학은 수학이 아닌 상상력으로 하는 것으로 우주의 법칙은 누구를 통해서도 밝혀질 수 있다고 믿고 있다. 성역화된 과학이 대중의 품으로 돌아오길 기대하며 이번 책을 썼다.