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Anael
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Hi, I am a first year physics student and i was just wondering, why is anti Gravity impossible? (iv'e read it many times without clear explanation). if an anti graviton would exist (IF a graviton) would it have negative mass.
tom.stoer said:there are a lot of assumptions ...
If you look at the cosmological constant you see that it warps space differently which leads to accelarated expansion of the universe - instead of slowed down expansion as you expected for ordinary matter. Now there are attempts to interpret the cosmological constant as "dark energy", which means energy that obeys a rather strange equation of state (you will find phantom energy, Chaplygin gas etc. in the literature).
But this interpretation as "dark energy" is equivalent with "antigravitating energy".
Anael said:ok, that makes a lot of sense thanks :P
just being curious (and stubborn), there is not even a minute possibility that something might warp space differently?? so far in our universe there is no indication to such a thing?
Antigravity is a theoretical concept that proposes the existence of a force that counteracts the effects of gravity. It is often depicted in science fiction as a way to defy the laws of physics and create levitation or flying objects.
At this point in time, there is no scientific evidence to support the existence of antigravity. While there have been some experiments that have shown small effects that may seem like antigravity, they are not strong enough to counteract the force of gravity in a significant way.
The concept of antigravity is still a mystery and currently not fully understood. There are various theories that propose different mechanisms for how it could work, such as manipulating the fabric of space-time or using exotic materials with negative mass. However, these theories are still purely speculative and have not been proven.
As of now, no practical applications of antigravity have been developed. While there have been some proposals for using antigravity for space travel or energy production, they are still in the early stages of research and development. It is important to note that even if antigravity were to be proven and harnessed, it would likely require a significant amount of energy and resources to make it feasible for practical use.
Since antigravity is a hypothetical concept, there are currently no known risks associated with it. However, if it were to be proven and harnessed, there may be potential risks to consider, such as destabilizing the Earth's gravitational field or disrupting other natural forces and phenomena. These risks would need to be carefully studied and evaluated before any practical applications of antigravity are developed.