Theories and laws in Science
The process of works at multiple levels from the small scale (e.g., a comparison of the genes of three closely related North American butterfly species) to the large scale (e.g., a half-century-long series of investigations of the idea that geographic isolation of a population can trigger speciation)…
Define gravitational pull
Yet stick a girl on live telly, and it s as if the cameras exert some weird gravitational pull on her blouse.A star wobbles on its axis when orbiting bodies like planets exert gravitational pull (force of attraction between bodies of matter).The suggestion is the moon s gravitational pull affects the…
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Who was Sir Isaac Newton?
As a matter of fact, Sir Isaac Newton was born on Christmas day only under the obsolete Julian calendar, making his birthday January 4th on the modern Gregorian. He actually wrote more on the Bible and Bible prophecy than he did on mathematics, calculus (he invented it), and the planets. This most beautiful…
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Gravitational constant
Through extremely high precision measurements of a pulsar orbiting a white dwarf star, astronomers have found that the gravitational constant, which dictates the force of gravity, is “reassuringly constant” throughout the universe. Just as the speed of light in a vacuum () and Planck’s constant () well-known…
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Big Bang theory Controversy
Everyone wants to be right. Most of us sure hate being wrong. But scientists know that new discoveries often change or even invalidate earlier ideas. Being wrong can mean we have learned something new. This week, a controversy about the Big Bang and the origin of the universe came to light at the American…
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Latest News on Higgs boson
Figure 1: The observed signal strengths (μ) and uncertainties for different Higgs boson decay channels and their combination for mH=125.36 GeV. Higgs boson signals corresponding to the same decay channel are combined together for all analyses. The best-fit values are shown by the solid vertical lines…
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What is the Dark energy?
So what is dark energy? Well, the simple answer is that we don t know. It seems to contradict many of our understandings about the way the universe works. We all know that light waves, also called radiation, carry energy. You feel that energy the moment you step outside on a hot summer day. Einstein…
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Dark Matters
I’ve had a few people ask me why my blog is called Dark Matter Matters, and since I haven’t told that story in a while, I thought I’d share an excerpt from The Ad-Free Brand explaining it (and appending some more recent information). Here goes: In late 2008, I was struggling mightily with the question…
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Calculating the force of gravity
The weight of an object is given by W=mg, the force of gravity, which comes from the law of gravity at the surface of the Earth in the inverse square law form: At standard sea level, the acceleration of gravity has the value g = 9.8 m/s2, but that value diminishes according to the inverse square law…
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Gravitational force of all planets
The Sun, Earth, moon and all other objects in the solar system attract each other with a force called gravity. This gravitational force only attracts and never repels and can act over an infinite distance. Newton explained this force in his law of universal gravitation. He stated that everybody in the…
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