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ave you ever wondered what humans did before numbers existed? How they organized their lives, traded goods, or kept track of their treasures? What would your life be like without them?
Numbers began as simple representations of everyday things, but mathematics rapidly took on a life of its own, occupying a parallel virtual world. In "Are Numbers Real?," Brian Clegg explores the way that math has become more and more detached from reality, and yet despite this is driving the development of modern physics.
Below is an excerpt from "Are Numbers Real?" (St. Martin's Press, 2016). Not entirely surprisingly, inﬁnity is a topic that never fails to stimulate the mind. Thoughts about the nature and existence of inﬁnity go back all the way to the Ancient Greeks. They were certainly aware that a sequence of numbers like the positive integers, the simple counting numbers would go on forever.
If there were a biggest integer—call it max—then there surely could always be max + 1, max + 2, and so on. But the whole idea of inﬁnity made the Greeks uncomfortable. Their word for it, apeiron, suggested chaos and disorder.
originally posted by: Darkmadness
Geometry is the basis with which we experience reality.
originally posted by: andy06shake
a reply to: JesusXst
Numbers are just humanity's attempt to quantify the realty we experience.
That being said if there is ever going to be a universal language it will most lightly take the form of mathematics.
I think Arabs reintroduced the notion of zero to the western world around the time of the crusades if memory serves.
originally posted by: JesusXst
originally posted by: Darkmadness
Geometry is the basis with which we experience reality.
If.. Reality is what we believe it is.
Take apples for example, one apple plus another apple equals two apples right?
Yet the apples will somewhat differ from one another in both mass and dimension.
The apparent power is the vector sum of real and reactive power
Engineers use the following terms to describe energy flow in a system (and assign each of them a different unit to differentiate between them):
Real power (P) [Unit: W]
Reactive power (Q) [Unit: VAR]
Complex power (S)
Apparent Power (|S|) [Unit: VA]: i.e. the absolute value of complex power S.