02 MAR 2019 by ideonexus

 Triangles on Earth Exceed 180 Degrees

The idea that space and time can be curved or warped is fairly recent. For more than 2,000 years the axioms of Euclidean geometry were considered to be selfevident. As those of you who were forced to learn geometry at school may remember, one of the consequences of these axioms is that the angles ot a triangle add up to 180 degrees. However, in the last century people began to realise that other forms of geometry were possible in which the angles of a triangle need not add up to i8o degrees...
Folksonomies: perception curved space
Folksonomies: perception curved space
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02 MAR 2019 by ideonexus

 The Anthropic Principle

As an example of the power of the Anthropic Principle, consider the number of directions in space. It is a matter of common experience that we live in three-dimensional space. That is to say, we can represent the position of a point in space by three numbers. For example, latitude. longitude and height above sea level. But why is space three-dimensional? Why isn't it two, or four, or some other number of dimensions, hke in science fiction? In fact, in M-theory space has ten dimensions (as wel...
Folksonomies: anthropic principle
Folksonomies: anthropic principle
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02 MAR 2019 by ideonexus

 Space is Negative Energy

The great mystery at the heart of the Big Bang is to explain how an entire, fantastically enormous universe of space and energy can materiahse out of nothing. The secret lies in one of the strangest facts about our cosmos. The laws of physics demand the existence of something called "negative energy." To help you get your head around this weird'd but crucial concept, let me draw on a simple analogy Imagine a man wants to build a hill on a flat piece of land. The hill will represent the univ...
Folksonomies: space big bang
Folksonomies: space big bang
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12 DEC 2017 by ideonexus

 Summary of Human Evolution

ABOUT 13.5 BILLION YEARS AGO, MATTER, energy, time and space came into being in what is known as the Big Bang. The story of these fundamental features of our universe is called physics. About 300,000 years after their appearance, matter and energy started to coalesce into complex structures, called atoms, which then combined into molecules. The story of atoms, molecules and their interactions is called chemistry. About 3.8 billion years ago, on a planet called Earth, certain molecules combi...
Folksonomies: epic history
Folksonomies: epic history
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14 MAR 2016 by ideonexus

 "Dark Matter" and "Dark Energy" are Terms That Hide Ignor...

We can measure the influence of this thing we call dark energy, which is forcing an acceleration of the expanding universe. We don't know what that is, we don't know anything about it, other than what it's doing to the universe. Then 85 percent of the gravity of the universe has a point of origin about which we know nothing. We account for all the matter and energy that we're familiar with, measure up how much gravity it should have — it's about one-sixth of the gravity that's actually ope...
Folksonomies: science ignorance unknowing
Folksonomies: science ignorance unknowing
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29 APR 2015 by ideonexus

 Time is the Most Precious Commodity

Your Earth is a very small part of a very large industry. ... In your world, people are used to fighting for resources, like oil, minerals, or land. When you have access to the vastness of space, you realize that there's only one resource worth fighting over--even killing for--more time. Time is the singlemost precious commodity in the Universe.
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