Flash how fast

From the perspective of the stationary observer, time is running slower for the moving clock. This is time dilation. Oh, if you are in the moving ship time still seems normal. It's just viewed from a different reference frame that time seems slower. The faster the spaceship travels, the more time seems to slow down. Mathematically, we can write this as the following equation:. There are two important comments here. That means the time dilation has practically zero effect.

Second, as the velocity of the frame v increases, time slows down even more. As you get very close to the speed of light, the time dilation would be extreme. Let's jump back a little bit. This paper contains his first ideas about relative motion and the speed of light.

It didn't take long for someone to suggest that if you go faster than light , some weird stuff could happen. Imagine that you have a planet Planet A that shoots out an object faster than the speed of light. When it gets to another planet Planet B , some event is triggered—let's say a light turns on. It turns out that for some moving reference frames, they would see the light turn on on Planet B before the object even left Planet A.

That's super crazy. But what would a faster than light object look like? Imagine that you have a spaceship moving at twice the speed of light as it zooms past the Earth. What would this look like to a stationary observer on the Earth? Remember, that in order to see this fast object, you have to have light travel from the object to the observer on Earth. Here is a model to show you what would happen. The moving object is shooting out pulses of light at regular intervals.

Just so we can keep track of the timing, it produces a red light, then yellow, then cyan. Remember, that these light pulses have to travel at the speed of light.

Here is the python code for this. If you were on Earth, you would first see a cyan light, then a yellow, then a red light as the ship approaches. Even though the spaceship emits the red light first, it has moved closer to the Earth by the time it shoots out the cyan light. Since it's going faster than light, that means this cyan pulse doesn't have to go as far as the red or yellow pulses and gets there first. The next light to reach the Earth is the yellow pulse and then finally the red.

So you would see the light in reverse order. Now imagine continuous light coming from the moving spaceship. These would also have to be completely backward. Yup, that's backward in time—there's your time travel. A quick comment. We often call c the speed of light, and it is. But really that is the speed of causality. If you turn on a light at some point in space, a person that's far away wouldn't know the light was turned on right away since light travels at a finite speed.

But it's not just light that has a constant speed, change has a constant speed. It's how fast you can ever know that something actually happened. We use your sign-up to provide content in ways you've consented to and to improve our understanding of you. This may include adverts from us and 3rd parties based on our understanding. You can unsubscribe at any time. More info.

The Flash is a popular series hailing from the Arrowverse and season seven has made its way to The CW. The first three episodes wrapped up the latest graphic novel storyline and a new story will begin in episode four.

Season seven began with Barry played by Grant Gustin discovering his speed was running out - but how fast can he run? Superhero The Flash is from the DC universe and he is known for his super-speed, which he uses to help him fight crime.

By tapping into the Speed Force, he has the ability to outrun villains and always be one step ahead of them. The seventh season of The Flash saw Barry in trouble as he was running out of power when he needed it most. He was determined to save his wife Iris Candice Patton from the Mirrorverse, but he was worried he would not have the strength to get her back. Fans have often wondered just how fast he can run, and they have taken to Reddit to discuss his powers.

This required that Barry run in a straight line for 5. By the end of The Flash season 1, Barry had learned how to tap into the Speed Force and how to accomplish feats like phasing his molecules through solid matter. His most impressive deed came during the season 1 finale when Barry traveled back in time for the first time in a bid to prevent his mother's murder at the hands of Eobard Thawne. The Flash season 2 saw Barry Allen diversifying his powers beyond simple speed.

Under the tutelage of the man who called himself Jay Garrick who was later revealed to be the speedster serial killer Zoom in disguise , Barry began mastering tricks like throwing lightning and traveling between alternate dimensions in the Arrowverse Multiverse.

Barry also learned how to create a time remnant; a clone of himself, born of a paradox or a potential future, created by the Speed Force to maintain the continuity of the main timeline. In terms of raw speed, however, season 2 provided enough information for Barry's improvement to be measured.

Season 2, episode 16, "Trajectory," introduced a new speedster criminal who was seemingly faster than The Flash, thanks to the dangerous drug called Velocity In order to apprehend an escaping Trajectory, Barry had to briefly attain Mach 3.

Later in the season, Barry was said to have increased his base speed by training with a tachyon device once used by the Reverse Flash. This enabled Barry to travel to other dimensions without the aid of any other equipment, as his trial run with the tachyon device led to his accidentally running to Earth and his first encounter with Supergirl. When he returned to Earth-1, Barry was informed that he had run four times faster than his previous top speed before he jumped dimensions, marking his top controlled speed at just over Mach Season 3 of The Flash pit Barry Allen against his greatest challenge yet; the self-dubbed god of speed Saviatar.

A base speed was never given for Savitar, who was fast enough that even Barry's heightened senses and connection to the Speed Force couldn't detect him until he chose to make his presence known. However, we know that Barry continued to boost his base speed throughout the season, as he tested himself against Jesse Quick in a relatively relaxed state in season 3, episode 4, "The New Rogues. When Barry returned after being imprisoned in the Speed Force for several months in The Flash season 4, he seemed to have attained a new level of speed and a number of new tricks.

The most impressive of these was an ability Cisco Ramon later dubbed Flashtime; a heightened state of awareness where Barry briefly boosted his brain's ability to react to events around him, effectively stopping time for himself and anyone he wished to bring into Flashtime with him. Like overclocking a computer, Barry couldn't enter Flashtime for long without the risk of burning himself or his allies out, but he was able to train himself, Cisco Ramon and Caitlin Snow to operate in a state of Flashtime, enabling them to save multiple hostages from The Thinker in the penultimate episode of season 4, "Think Fast.

A different feat in the season 4 episode "Honey, I Shrunk Team Flash" offers a quantifiable base for Barry's exact speed. After having his life saved by an inmate known as Big Sir, whom Barry had learned was innocent of the crime that sent him to prison, Barry repaid the debt he felt he owed Big Sir by helping him to escape prison, running him out of the prison at superspeed and leaving him in the Chinese city of Jiaju.