The Science of Gravity: 5 Facts You Don’t Understand
427We all take gravity for granted. Yes,it’s one of the four fundamental forces of nature that keeps our feet on the ground and makes sure Earth is orbiting the Sun.
It’s something we feel every day, making it seem quite intuitive.
“Whatever goes up will fall down!”
But the more you dig into it, the more you realize there's a whole lot more to this force than meets the eye. Today, we’ll look beyond the classic Newton apple tale and uncover five intriguing facts about gravity that are often misunderstood, oversimplified, or still puzzling to many.
5. Gravity Is Not Exactly A Force
The four fundamental forces of nature - strong and weak nuclear forces, electromagnetism, and gravity - are often considered to be the underlying explanations for all interactions in the universe. However, some physicists prefer to refer to these as the four fundamental interactions, as gravity doesn't quite fit the same mold as the other three. T
4. Our Theories Fall Apart At The Quantum Level
Thanks to general relativity, we now have a more accurate model of gravity, refining the insights originally provided by Newton. However, it is not without its limitations.
3. Gravity Is Limited By The Speed Of Light
In physics, few equations have made a bigger impact than E = mc², showing the relationship between energy and mass. However, the significance of this equation extends far beyond its mathematical simplicity.
2. Gravity Is Most Intense In Black Holes
The Einstein field equations, formulated in 1915, describe the geometry of spacetime within the framework of general relativity.
1. Gravity Warps: The Passage Of Time
Einstein's predictions about time dilation are quite remarkable, and there are two main types: one related to velocity and the other to gravity. Let's delve into the latter, which is known as gravitational time dilation.
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Credits: Ron Miller, Mark A. Garlick / MarkGarlick.com ,Elon Musk/SpaceX/ Flickr
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00:00 Intro
0:47 5. Gravity Is Not Exactly A Force
4:40 4 Our Theories Fall Apart At The Quantum Level
7.20 cta
7:24 3 Gravity Is Limited By The Speed Of Light
10:58 2 Gravity is most intense in black holes
16.45 How Gravity Affects Time?
14:03 1 Gravity Warps: The passage of Time
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