Tag: definitions
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Eagle “natural” beak…
An eagle gets a new artificial beak, with the help of 3D printing technology. [1] Is it “natural”? Who defines “artificial”? Isn’t everything we do, as humans, part of Nature and – thus – natural?
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Absolute temperatures, efficiency > 100%, definitions, “limits”…
What is normal to most people in winter has so far been impossible in physics: a minus temperature. On the Celsius scale minus temperatures are only surprising in summer. On the absolute temperature scale, which is used by physicists and is also called the Kelvin scale, it is not possible to go below zero. Physicists […]
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