Lasting
发表于 2025-3-25 06:53:29
Outlook,nteract with alien species. Is this a fantasy or an eventual certainty? What about the more modest proposal of putting a colony on Mars? It’s easy to imagine this colony, but is it practical or a death sentence?
EVEN
发表于 2025-3-25 09:46:10
What Is Science?, love or evil when we see it, but defining these concepts is difficult indeed. Even a physical entity like a duck is hard to define. The dictionary definition, “A waterbird with a broad blunt bill, short legs, webbed feet, and a waddling gait” seems unsatisfactory. This description of a few duck-lik
Culpable
发表于 2025-3-25 11:45:12
Energy and Entropy,e discussion to follow. The most important aspects of the economy and the environment can be traced to the flow of energy through these systems. Entropy, on the other hand, provides an important constraint on how this energy can flow. We will apply these concepts to the human body and the economy in
Vldl379
发表于 2025-3-25 17:55:26
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Barrister
发表于 2025-3-25 22:23:54
Atom and Light,r we will learn about the structure of the atom and how atoms and molecules interact with light. This necessarily involves the . concept that underpins the microscopic world and revolutionized our understanding of nature. With this information in place we will tackle polarization and scattering of l
Mundane
发表于 2025-3-26 01:41:13
Climate,substantial costs that we are currently ignoring. Chief among these is the fantasy that pumping billions of tonnes of carbon into the air does not affect us or the climate. In this chapter we will look at the real costs associated with burning coal and oil. We then examine the effects this has on en
手榴弹
发表于 2025-3-26 07:14:19
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EVICT
发表于 2025-3-26 08:57:41
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摆动
发表于 2025-3-26 14:01:21
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摆动
发表于 2025-3-26 19:48:56
Textbook 2016nson explains how science permeates society, and with simple examples of the scientific process he shows its special power in dealing with the natural world. This is a must read for the world‘s seven billion scientists.".F.E. Close, OBE, Oxford University, author of, among others, ."Half-Life: The D