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Viko This Week s TV: How do you feel about 20 years of Syfy
It takes very special materials to make actual superconductors, but you can demonstrate the principles of superconductivity with a simple aluminum frying pan, a magnet, and a bit of liquid nitrogen. Have some fun with a semi-levitating magnet on a semi-superconductor. Superconductors are materials that, under normal circumstances, conduct electricity rather unimpressively, but drop the temperature enough and they become marvels of conductivity. In every material that conducts electricity there is a certain resistance to the flow of the electrons. Itstanley website 8217 this resistance that leads to a lot of the inefficiency and the energy-consumption that comes with electronic devices. When resistance drops to zero, not only will the power flow unimpeded, it stanley cup will flow even without a voltage being applied to the device. Electricity runs forever. But only when the metal is chilled to, at the most, thirty degrees above absolute zero. This requires so much energy chemical or otherwise that any gain from the lack of resistance is negated, and so superconductors are used for only specialized purposes. One of those purposes seems to be showing off. Magnets interact strangely with superconductors. For one thing, they are repelled by superc stanley ca onductors at close range, and so rise up and away from them. However, they are also fixed in place by the electromagnetic field around them, and so instead of flying away from the superconductor, will levitate a certain distance from the ma Goiw Take a vacation to Arrakis with Dune travel posters
This past Monday, people who have the Dalai Lama as a Facebook frie stanley spain nd found this little gem in their newsfeed. All the world major religions, with their emphasis on love, compassion, patience, tolerance, and forgiveness can and do promote inner values. But the reality of the world today is that grounding ethics in religion is no longer adequate. This is why I am increasingly convinced that the time has come to find a way of thinking about spirituality and ethics beyond religion altogether. The Dalai Lama advice sounds startling familiar 鈥?one that echos the sentiment put forth by outspoken atheist Sam Harris who argues that science can answer moral questions. The Dalai Lama is no stranger to scientific discourse, and has developed a great fascination with neuroscience in particular. It very possible, therefore, that his thinking has aligned with Harris. In a recent interview with the Globe and Mail, Harris had this to say abo stanley thermos ut science and how it should be used to inform our moral and ethical sensibilities: The moment we admit that questions of right and wrong, and good and evil, are actually questions about human and animal well-being, we see that science can, in principle, answer such questions. Human experience depends on everything that can influence states of the human brain, ranging from changes in our genome to changes in the global economy. The relevant details of genetics, neurobiology, stanley cup psychology, sociology, economics etc. are fantastica |
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发表于 2024-12-28 19:57:04
发表于 2024-12-28 19:59:21
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