Physics news: Chameleon Theory of Gravity and laser-driven microbubbles

Flyaway

Flyaway

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Supercomputer shows 'Chameleon Theory' could change how we think about gravity

Supercomputer simulations of galaxies have shown that Einstein's theory of General Relativity might not be the only way to explain how gravity works or how galaxies form.

Physicists at Durham University, UK, simulated the cosmos using an alternative model for gravity - f(R)-gravity, a so called Chameleon Theory.

The resulting images produced by the simulation show that galaxies like our Milky Way could still form in the universe even with different laws of gravity.

The findings show the viability of Chameleon Theory - so called because it changes behaviour according to the environment - as an alternative to General Relativity in explaining the formation of structures in the universe.

The research could also help further understanding of dark energy - the mysterious substance that is accelerating the expansion rate of the universe.
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Could Vacuum Physics Be Revealed By Laser-Driven Microbubble?

Scientists at Osaka University discovered a novel mechanism which they refer to as microbubble implosion (MBI) in 2018. In MBI, super-high energy hydrogen ions (relativistic protons) are emitted at the moment when bubbles shrink to atomic size through the irradiation of hydrides with micron-sized spherical bubbles by ultraintense, ultrashort laser pulses.

In this study, the group led by Masakatsu Murakami confirmed that during MBI, an ultrahigh electrostatic field close to the Schwinger field could be achieved because micron-sized bubbles embedded in a solid hydride target implode to have nanometer-sized diameters upon ionization.
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Flyaway said:
Supercomputer shows 'Chameleon Theory' could change how we think about gravity

Supercomputer simulations of galaxies have shown that Einstein's theory of General Relativity might not be the only way to explain how gravity works or how galaxies form.

Physicists at Durham University, UK, simulated the cosmos using an alternative model for gravity - f(R)-gravity, a so called Chameleon Theory.

The resulting images produced by the simulation show that galaxies like our Milky Way could still form in the universe even with different laws of gravity.

The findings show the viability of Chameleon Theory - so called because it changes behaviour according to the environment - as an alternative to General Relativity in explaining the formation of structures in the universe.

The research could also help further understanding of dark energy - the mysterious substance that is accelerating the expansion rate of the universe.
Click to expand...
Click to expand...
It's amazingly interesting, but unless the B-21 has a gravity drive it's also in the wrong topic :D

Edit: Ninja'd by Orionblamblam...
 
Flyaway said:
The research could also help further understanding of dark energy - the mysterious substance that is accelerating the expansion rate of the universe.
Click to expand...

Lol... If you are thinking the universe has a bi-phasic state (at least), it's pretty obvious why the expansion of one into another is accelerating... It's not what we see that it is. With this problem, people are acting like medieval sailors afraid of the falling past the horizon line.
 
There are many theories of gravity. Only Einstein's theory remains validated and self consistent and can be used to make predictions and calculations. If your theory cannot make predictions or calculations then its not science as much as it is a wasted effort and wishful thinking.

What does this have to do with the raider?
 

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