Traveling to the past seems like a science fiction theme, worthy of HG Wells books or movies like Back to the Future. But for an American scientist, it will at some point be a reality.
Ronald Mallett, professor of physics at the University of Connecticut, is the promoter of the theory of laser rings. According to the experienced physicist, a rotating laser loop can continuously bend time.
Mallet believes that it can generate a gravitational field that leads to the creation of time loops, allowing travel to the past.
“Light can create gravity, and if gravity can affect time, then light itself can affect time,” he said in an interview with The Guardian.
Unlike a normal black hole, a rotating one has two event horizons, one inside and one outside. Between these two horizons something called frame dragging occurs, which is space-time dragging.
The teacher makes a comparison.
Ronald Mallett’s base to be able to travel to the past with laser rings
“Let’s say you have a cup of coffee in front of you right now. He begins to stir the coffee with the spoon. She started spinning, right? That’s what a spinning black hole does.”
“In Einstein’s theory,” Mallett continues, “space and time are related to each other. That is why it is called space-time. So as the black hole spins, it will actually cause time warping.”
The scientist acknowledges that the effort would not be economical, and that no government would invest in it. But he has faith that, in the future, someone will.
“What is needed first is to show that we can twist space, not time, twist space with light,” says Mallett. And he compares his idea to that of the Wright brothers, the first to fly. Few thought that, at some point, humanity could go to the Moon. And it was achieved.
Why not travel to the past?