What is one thing you would change in the world?

There should be education, housing, healthcare for all. There should be better treatment of animals. There should be more openness towards ideas that conflict our own. We should end global warming, crime, war, racism, terrorism, cancer, pollution, poverty, climate change and more.

Can we change the history?

By definition, history is the study of past events in human affairs. The past is the past, but the past can and does influence the present and the future. We cannot change that history by doing away with statues and memorials that might offend us, but we can learn from that history.

Can we go back in time?

The Short Answer: Although humans can’t hop into a time machine and go back in time, we do know that clocks on airplanes and satellites travel at a different speed than those on Earth. That kind of time travel sounds like something you’d only see in movies or science fiction books. …

Can a time machine be made?

Travelling in time might sound like a flight of fancy, but some physicists think it might really be possible. BBC Horizon looked at some of the most promising ideas for turning this staple of science fiction into reality. Ron Mallett has a dream: He wants to travel in time.

Is a time machine invented?

For an Iranian scientist has invented The Aryayek Time-Traveling Machine. Or, at least, he says he has. According to today’s Telegraph, 27-year-old Ali Razeghi says that his much-needed creation can take you eight years into the future, so that you can see what you look like after that surgery you so covet every day.

Can we go back in time if we travel faster than light?

But to achieve true backward time travel, we’ll have to go even faster! So, simply going faster than light does not inherently lead to backwards time travel. Very specific conditions must be met—and, of course, the speed of light remains the maximum speed of anything with mass.

Do thoughts travel faster than light?

(Phys.org) —Physicist James Franson of the University of Maryland, Baltimore County has captured the attention of the physics community by posting an article to the peer-reviewed New Journal of Physics in which he claims to have found evidence that suggests the speed of light as described by the theory of general …

What happens if you travel faster than light?

But if something can travel faster than light, it can travel backward in time, according to the theory. In this case, an “effect” could travel back to a point before its “cause” had occurred — for instance, a baby swinging before he gets a push.

Is black hole faster than light?

Using NASA’s Chandra X-ray Observatory, astronomers have seen that the famous giant black hole in Messier 87 is propelling particles at speeds greater than 99% of the speed of light.

What is faster sound or light?

The speed of sound through air is about 340 meters per second. It’s faster through water, and it’s even faster through steel. Light will travel through a vacuum at 300 million meters per second. No information can propagate faster than the speed of light.

What is the fastest thing in the world?

Laser beams travel at the speed of light, more than 670 million miles per hour, making them the fastest thing in the universe.

How fast can a human think?

However, a team of neuroscientists from MIT has found that the human brain can process entire images that the eye sees for as little as 13 milliseconds — the first evidence of such rapid processing speed. That speed is far faster than the 100 milliseconds suggested by previous studies.

Does light travel faster in air or water?

Explain that unlike sound, light waves travel fastest through a vacuum and air, and slower through other materials such as glass or water.

Which light travels the fastest?

red

What’s faster than sound?

Speeds greater than five times the speed of sound (Mach 5) are often referred to as hypersonic. Flights during which only some parts of the air surrounding an object, such as the ends of rotor blades, reach supersonic speeds are called transonic. This occurs typically somewhere between Mach 0.8 and Mach 1.2.