- Can we create a black hole?
- How do astronauts shower?
- How fast is 1g in space?
- Why are gravitons Spin 2?
- Why is gravity so weird?
- Can gravity exist without mass?
- Can we create gravity?
- Where is gravity the strongest?
- How fast is gravity?
- Can we manipulate gravity?
- Who invented gravity?
- What is gravity exactly?
- Has gravity been proven?
- What is the weakest thing in the universe?
- How far up is 0 gravity?
- Is gravity a wave or particle?
- Why is there no gravity in space?
- How is gravity created?
- What is a graviton made of?
- Does zero gravity exist?
Can we create a black hole?
Creating microscopic black holes using particle accelerators requires less energy than previously thought, researchers say.
Any such black holes would pose no risk to Earth, however, scientists added.
Black holes possess gravitational fields so powerful that nothing can escape, not even light..
How do astronauts shower?
On the Space Shuttle and International Space Station (ISS), astronauts went back to the “old-fashioned” way of bathing in space. On the ISS, astronauts do not shower but rather use liquid soap, water, and rinseless shampoo. They squeeze liquid soap and water from pouches onto their skin.
How fast is 1g in space?
Accelerating at 1 g for time t covers a distance is g t2/2. Let d be the distance to Mars in meters, T the total of the trip in seconds, and g = 9.8 m/s2.
Why are gravitons Spin 2?
Graviton. … The graviton must be a spin-2 boson because the source of gravitation is the stress–energy tensor, a second-order tensor (compared with electromagnetism’s spin-1 photon, the source of which is the four-current, a first-order tensor).
Why is gravity so weird?
2. 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.
Can gravity exist without mass?
The only way to get gravity is with mass. The more mass, the more gravity you get. Without mass, you can’t have gravity.
Can we create gravity?
Artificial gravity can be created using a centripetal force. … Thus, the “gravity” force felt by an object the centrifugal force perceived in the rotating frame of reference as pointing “downwards” towards the hull.
Where is gravity the strongest?
Hirt’s model pinpoints unexpected locations with more extreme differences. Mount Nevado Huascarán in Peru has the lowest gravitational acceleration, at 9.7639 m/s2, while the highest is at the surface of the Arctic Ocean, at 9.8337 m/s2.
How fast is gravity?
The best results, at the present time, tell us that the speed of gravity is between 2.993 × 10^8 and 3.003 × 10^8 meters per second, which is an amazing confirmation of General Relativity and a terrible difficulty for alternative theories of gravity that don’t reduce to General Relativity!
Can we manipulate gravity?
The better news is that there is no science that says that gravity control is impossible. … We are quite adept at controlling electromagnetic phenomena, so one can presume that such a connection might eventually lead to using our control of electromagnetism to control gravity.
Who invented gravity?
Sir Isaac NewtonSir Isaac Newton was an English mathematician and mathematician and physicist who lived from 1642-1727. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature.
What is gravity exactly?
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe.
Has gravity been proven?
Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass.
What is the weakest thing in the universe?
Gravitational force, the weakest of the four forces, has a strength of 10 to the minus 40, relative to electromagnetism. The force of gravity (along with electromagnetism) has a range of infinity – every single atom in the universe is ‘gravitationally aware’ of every other atom.
How far up is 0 gravity?
Technically, earth’s gravitational pull on an object never actually reaches 0, as a gravitational field is infinite – it just becomes infitessimally small as the distance of the object from earth increases.
Is gravity a wave or particle?
Gravity is a force. For all other forces that we are aware of (electromagnetic force, weak decay force, strong nuclear force) we have identified particles that transmit the forces at a quantum level. In quantum theory, each particle acts both as a particle AND a wave. This is called duality.
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”.
How is gravity created?
The answer is gravity: an invisible force that pulls objects toward each other. … So, the closer objects are to each other, the stronger their gravitational pull is. Earth’s gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.
What is a graviton made of?
While photons are spawned by movement in electrons, gravitons are whelped by energy and mass. Gravitons are massless, but they do carry energy. This means a graviton can create more gravitons. Like other quantum particles, gravitons can carry a lot of energy, or momentum, when confined to a small space.
Does zero gravity exist?
Full story. The sensation of weightlessness, or zero gravity, happens when the effects of gravity are not felt. Technically speaking, gravity does exist everywhere in the universe because it is defined as the force that attracts two bodies to each other. But astronauts in space usually do not feel its effects.