Observe
发表于 2025-3-25 05:12:03
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反话
发表于 2025-3-25 07:37:28
The Physics of the UniverseCosmology is unique among sciences because it deals with the whole physical Universe, while other sciences deal with only part of it, or with certain aspects of physical reality.
Foreshadow
发表于 2025-3-25 14:57:22
Galaxies and Clusters of Galaxiesactic nebulae” because they look like faint nebulae when seen through small telescopes. Consequently they were initially given names such as the “Magellanic Clouds”, the “Andromeda nebula” and so forth.
Anthropoid
发表于 2025-3-25 16:59:24
Cosmological Problems of the Universe” (that is the scale factor .) during the early Universe was increasing with time as ., where t is the age of the Universe. This implies that the expansion is fastest when . → 0 when, in fact, the derivative of . tends to infinity. That is, the beginning of the expansion is an enormous explosion with infinite velocity.
capsule
发表于 2025-3-25 20:45:51
Wissensmanagement für das Verwaltungshandelne time flows in the right direction, such strange events do not happen. What is most important is that the natural direction of time ensures that the cause precedes the effect. For example, the athlete throwing the javelin is the cause which comes before the effect which is the javelin striking the ground.
浪荡子
发表于 2025-3-26 03:45:52
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Cacophonous
发表于 2025-3-26 08:12:23
ary ideas. The level is introductory undergraduate, with rather little mathematics but a strong physical basis.....The second part, on general relativity and cosmology, provides a good account of modern theoretical ideas, from rotating black holes to Grand Unified Theories and inflation. The third p
反复拉紧
发表于 2025-3-26 09:11:41
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Essential
发表于 2025-3-26 13:08:00
Wissensmanagement für das Verwaltungshandelnthis question appears simple at first sight: “because there are not enough stars in the sky and therefore there are gaps between the stars”. This answer is, however, wrong. There are enough stars to fill the sky and actually their total light “should” be sufficiently intense to set fire to the Earth. Let us examine a simple proof of this claim.
overreach
发表于 2025-3-26 17:37:13
Book 1987 The level is introductory undergraduate, with rather little mathematics but a strong physical basis.....The second part, on general relativity and cosmology, provides a good account of modern theoretical ideas, from rotating black holes to Grand Unified Theories and inflation. The third part is an