- Is gravity just warped space?
- Are time and space an illusion?
- Can we prove gravity?
- What is more powerful than gravity?
- Is gravity a real force?
- Can gravity bend light?
- Why is space flat?
- How do astronauts poop?
- Does the past still exist?
- Can gravity bend time?
- Why is gravity so weird?
- Is time a human concept?
- Why is there no gravity in space?
- Who invented gravity?
- Can you remove gravity?
- Is time the 4th Dimension?
- Can we create gravity?
Is gravity just warped space?
General relativity describes gravity as a warping or curvature of space and time.
All objects warp spacetime.
When other objects travel through this warped spacetime, they end up traveling along curved paths..
Are time and space an illusion?
This past fall, the world of physics celebrated the 100th anniversary of Albert Einstein’s general theory of relativity, which forms the foundation of our modern understanding of the force of gravity. A theory of gravity is also a theory of space and time. …
Can we prove gravity?
The first direct evidence for gravitational radiation was measured on 14 September 2015 by the LIGO detectors. The gravitational waves emitted during the collision of two black holes 1.3 billion-light years from Earth were measured.
What is more powerful than gravity?
The strong nuclear force, also called the strong nuclear interaction, is the strongest of the four fundamental forces of nature. It’s 6 thousand trillion trillion trillion (that’s 39 zeroes after 6!) times stronger than the force of gravity, according to the HyperPhysics website.
Is gravity a real force?
In general relativity, gravity is a fictitious force. In classical mechanics, fictitious forces are not considered “real” forces. … If you believe that inertial forces are forces, then gravity is a force. If you believe that inertial forces are not forces, then gravity is not a force.
Can gravity bend light?
Gravity bends light Light travels through spacetime, which can be warped and curved—so light should dip and curve in the presence of massive objects. This effect is known as gravitational lensing GLOSSARY gravitational lensingThe bending of light caused by gravity .
Why is space flat?
In a universe with zero curvature, the local geometry is flat. … With dark energy, the expansion rate of the universe initially slows down, due to the effect of gravity, but eventually increases. The ultimate fate of the universe is the same as that of an open universe. A flat universe can have zero total energy.
How do astronauts poop?
When it’s too full, astronauts must “put a rubber glove on and pack it down.” That’s what happens when the ISS toilet is working. … The process involves using a piece of equipment with hose using suction to pull away urine or poop after an astronaut uses the bathroom.
Does the past still exist?
The past and future do not exist and are only concepts used to describe the real, isolated, and changing present. This conventional model presents a number of difficult philosophical problems, and seems difficult to reconcile with currently accepted scientific theories such as the theory of relativity.
Can gravity bend time?
Also, under Einstein’s theory of general relativity, gravity can bend time. … When anything that has mass sits on that piece of fabric, it causes a dimple or a bending of space-time. The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity.
Why is gravity so weird?
Why is gravity so weird? No force is more familiar than gravity — it’s what keeps our feet on the ground, after all. And Einstein’s theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of space.
Is time a human concept?
Isaac Newton said that we are merely occupying time, he also says that humans can only understand relative time. Relative time is a measurement of objects in motion. The anti-realists believed that time is merely a convenient intellectual concept for humans to understand events. … Time is not an empirical concept.
Why is there no gravity in space?
The second reason that gravity is not so obvious in space is because objects tend to orbit planets instead of hitting them. Orbiting just means that an object falls towards a planet due to gravity and continually misses it. … Astronauts in orbit around the earth are not experiencing “no gravity”.
Who invented gravity?
Isaac Newton’sConsider how Isaac Newton’s discovery of gravity led to a better understanding of planetary motion. Isaac Newton’s formulation of the law of universal gravitation.
Can you remove gravity?
Gravity’s draw is simply masked by the free-falling motion of a spacecraft as it circles the planet. Only way out in deep space, beyond the domain of any planets or stars, can you truly escape gravity. As of yet, no technology exists to neutralize the pull of gravity.
Is time the 4th Dimension?
But in the 106 years since Einstein, the prevailing view in physics has been that time serves as the fourth dimension of space, an arena represented mathematically as 4D Minkowski spacetime. …
Can we create gravity?
Artificial gravity can be created using a centripetal force. … In the context of a rotating space station it is the normal force provided by the spacecraft’s hull that acts as centripetal force.