How is it possible NOT to go faster than the speed of light?

[PrivilegeCheker]

In Albert Einstein's ground breaking paper titled "On the Electrodynamics of Moving Bodies," Einstein concluded that nothing is faster than light moving through a vacuum - a speed of 186,000 miles per second. This implies light is always the same, no matter what.

If this is true, then that means if we were able to measure the time it takes light to reach a certain object, then the time it takes to reach the object will change depending on the speed of the origin of the light and the object that it is intended to reach if you assume the two entities always remain in the same relative location in relation to each other.

So this means that we can measure our precise velocity not in relation to the sun, not in relation to other planets, but in relation to light. How is it NOT possible to go faster than the speed of light?

It is therefore possible to go faster than the speed of light through a vacuum.

No if you go faster than the speed of light you turn to energy. And energy travels slower than the speed of light. Rules of physics. Can any physics brahs confirm this? As that is just what I learned

[mommaofobama]

Yeah ok but what about this einstein

It would break.

The force acting on a particle of gear 1 would be equal to infinity, simply because the centripetal force is multiplied by the lorentz factor, which becomes infinity when v=c.

[Soflogator528]

It would break.

The force acting on a particle of gear 1 would be equal to infinity, simply because the centripetal force is multiplied by the lorentz factor, which becomes infinity when v=c.

or would it? if you've never done it how would you know *******. breaking the speed of light is easy but no one has the balls to do it though cause it would blow up the universe.

[MiscMathematician]

Light moves at a constant speed, regardless of the speed of the observer. Take the following scenario:

You and I are standing together. A supernova occurs. The moment it occurs, I take off away from it at half the speed of light. Now regular logic would dictate that you should see it before me, but with light, we both see it at the same time.

speed is distance over time. v=d/t.

Since the light's speed is constant, and it had to travel a longer distance to reach me, you see me as moving slower through time while I see you as moving faster.

Pretty cool.

Since light travels at a constant speed, it would be impossible to travel faster than light, since that would mean moving slower than 0 through time.

No. The time it takes for light to reach a certain object is always the same, regardless of the speed of the object and the light source.

are you the writer for tim and eric's astronomy segments?

[PrivilegeCheker]

it's obviously possible brah, do you even physics?

The laws of physics don't approve of this. Speed of light equals time paused. Anything more will make it possible to time travel. And do to paradoxes that's impossible

[ADHDave]

No if you go faster than the speed of light you turn to energy. And energy travels slower than the speed of light. Rules of physics. Can any physics brahs confirm this? As that is just what I learned

No, you cant go above the speed of light, and it would take infinite energy to get to the speed of light. Its easily possible to accelerate something to very close to the speed of light (0.9999999c) but you need more and more energy the closer you get

[DrinkingBull]

v =/= w

speed =/= angular speed

its velocity would be the speed of light divided by its radius, but since it has mass its tangential velocity cant move at the speed of light anyway, or idk maybe it can I have only taken physics 1

[Baconandeggs]

Yeah ok but what about this einstein

Under the theory of relativity, the gravitational propagation between the atoms operate at the speed of light if its in a vacuum. The outer teeth on the gears would probably pull back until it hits the speed of light - in which case it will just be a blur from the viewer's frame of reference. Obviously this is assuming the hypothetical motor has enough energy to spin the gears so that the outer teeth is fast enough to propagate

It's like if you have a hypothetical stick that reaches far out into space and you wave it, the end of the stick will appear to curve back as the gravity holds the atoms together at the speed of light. This is the beauty of the theory of relativity which was used to explain everything from Parallax to Blackholes.

[mommaofobama]

are you the writer for tim and eric's astronomy segments?

i wish

[DrinkingBull]

could you change the speed of light theoretically?

[MiscMathematician]

could you change the speed of light theoretically?

yes, by shooting it through a medium. since vacuums do not exist, the actual speed of light is not visibly observable.

[AHUGECAT]

could you change the speed of light theoretically?

For generations, physicists believed there is nothing faster than light moving through a vacuum -- a speed of 186,000 miles per second. But in an experiment in Princeton, N.J., physicists sent a pulse of laser light through cesium vapor so quickly that it left the chamber before it had even finished entering. The pulse traveled 310 times the distance it would have covered if the chamber had contained a vacuum. Researchers say it is the most convincing demonstration yet that the speed of light -- supposedly an ironclad rule of nature -- can be pushed beyond known boundaries
ABC News, 20 July 2000

Albert Einstein theorized that light cannot travel faster than 186,282 miles per second. But he never said it couldn't go slower.

Lene Hau, a physics professor in the Faculty of Arts and Sciences at Harvard University, says Einstein would "probably be stunned" at the results of her recent experiments. Working in her laboratory at the Rowland Institute for Science, she and her colleagues slowed light 20 million-fold in 1999, to an incredible 38 miles an hour. They did it by passing a beam of light through a small cloud of atoms cooled to temperatures a billion times colder than those in the spaces between stars. Just recently, they were able to stop light completely.

"In this odd state, light takes on a more human dimension; you can almost touch it," Hau says.

Inspired by Hau's success at slowing light, researchers at the Harvard-Smithsonian Center for Astrophysics (CfA) used a similar technique to stop, then restart, a light beam.
(Harvard University Gazette, 24 January 2001)

[DrinkingBull]

For generations, physicists believed there is nothing faster than light moving through a vacuum -- a speed of 186,000 miles per second. But in an experiment in Princeton, N.J., physicists sent a pulse of laser light through cesium vapor so quickly that it left the chamber before it had even finished entering. The pulse traveled 310 times the distance it would have covered if the chamber had contained a vacuum. Researchers say it is the most convincing demonstration yet that the speed of light -- supposedly an ironclad rule of nature -- can be pushed beyond known boundaries
ABC News, 20 July 2000

Albert Einstein theorized that light cannot travel faster than 186,282 miles per second. But he never said it couldn't go slower.

Lene Hau, a physics professor in the Faculty of Arts and Sciences at Harvard University, says Einstein would "probably be stunned" at the results of her recent experiments. Working in her laboratory at the Rowland Institute for Science, she and her colleagues slowed light 20 million-fold in 1999, to an incredible 38 miles an hour. They did it by passing a beam of light through a small cloud of atoms cooled to temperatures a billion times colder than those in the spaces between stars. Just recently, they were able to stop light completely.

"In this odd state, light takes on a more human dimension; you can almost touch it," Hau says.

Inspired by Hau's success at slowing light, researchers at the Harvard-Smithsonian Center for Astrophysics (CfA) used a similar technique to stop, then restart, a light beam.
(Harvard University Gazette, 24 January 2001)

Incredible

[Ensamtoga]

Sure we will OP.

We just need to find Element zero.

FTL drives are devices which allow ships to travel at FTL speeds through space. FTL drive cores work by exposing element zero to electric currents, creating mass effect fields. It reduces the mass of an object, such as a starship, to a point where velocities faster than the speed of light are possible. With a mass effect drive, roughly a dozen light-years can be traversed in the course of a day's cruise without bending space-time and causing time dilation.
The precise maximum speed and the time this acceleration can be maintained varies depending on the exact type of FTL drive being used. In general, the larger the drive, the longer the ship can run at FTL.

When travelling across space, thrusters are applied in one direction for the first half of the trip, then the thrusters are reversed for the second half of the trip in order to reach appropriate speeds for arriving. In 2185, Commander Shepard can have a conversation with Marab on this particular point stating that several people who travel in space forget that the ship must be slowed as much as it was accelerated, hence it will start being slowed halfway to its destination.

Source: Mass Effect





Semi Srs

[Ken-O]

its velocity would be the speed of light divided by its radius, but since it has mass its tangential velocity cant move at the speed of light anyway, or idk maybe it can I have only taken physics 1

Under the theory of relativity, the gravitational propagation between the atoms operate at the speed of light if its in a vacuum. The outer teeth on the gears would probably pull back until it hits the speed of light - in which case it will just be a blur from the viewer's frame of reference. Obviously this is assuming the hypothetical motor has enough energy to spin the gears so that the outer teeth is fast enough to propagate

It's like if you have a hypothetical stick that reaches far out into space and you wave it, the end of the stick will appear to curve back as the gravity holds the atoms together at the speed of light. This is the beauty of the theory of relativity which was used to explain everything from Parallax to Blackholes.

you guys need to take physics 2.

[AcetylCoA]

Isn't it possible for spacetime to expand/contract faster than the speed of light?

[Vishca]

reserving spot for later

[DrinkingBull]

you guys need to take physics 2.

taking it next semester lol

[PrivilegeCheker]

Is no one going to argue that going over the speed of light would make time move back. Which is impossible? Hence you can't. Unless you believe in time travel and no reputable scientist does.

[PrivilegeCheker]

No, you cant go above the speed of light, and it would take infinite energy to get to the speed of light. Its easily possible to accelerate something to very close to the speed of light (0.9999999c) but you need more and more energy the closer you get

So hence...it's impossible?

[Skarm]

Thats why its called the theory of RELATIVITY OP.
Speed of light is constant, and speed = distance / time.
Therefore, for the speed of light to remain constant (which it must due to Maxwells laws of electromagnetism), either the distance something is travelling, or the time it takes it to travel, must change, relative to the OBSERVER.

[indosthetic]

Isn't it possible for spacetime to expand/contract faster than the speed of light?

yes.

the limit only applies to matter/energy traveling through a vacuum, not the vacuum itself.

there is no speed limit on how fast space can expand and contract.

this is precisely why a warp-drive is theoretically possible and NASA is working on (potentially) developing one.

[mojo85]

Impossible to travel through time. E=MC^2

Nothing in the laws of physics says time cannot flow backwards

[noaviLOL]

relativity of peace

[DrinkingBull]

yes.

the limit only applies to matter/energy traveling through a vacuum, not the vacuum itself.

there is no speed limit on how fast space can expand and contract.

this is precisely why a warp-drive is theoretically possible and NASA is working on (potentially) developing one.

but how can we be sure that spacetime expands and contracts into a vaccuum. could be higgs boson, string theory or flying spagetti monster etc.

[BetaKnight]

i honestly hope you're trolling with the physics major...speed of light is not always the same. it is the SAME respective to the medium in which it travels through but when light are refracted into higher index of refraction mediums than they become slower. i however forgot the reason why something cannot go beyond the speed of light.

[davekingz]

it's obviously possible brah, do you even physics?

Mind = Blown

[mistrvi]

Why everybody itt keep saying speed of light is constant when it was proven its not

[Schnitzl]

Can anyone explain time dilation @ higher velocities in very simple terms? Blowz muh mind.

[VANZFINEST]

Light moves at a constant speed, regardless of the speed of the observer. Take the following scenario:

You and I are standing together. A supernova occurs. The moment it occurs, I take off away from it at half the speed of light. Now regular logic would dictate that you should see it before me, but with light, we both see it at the same time.

speed is distance over time. v=d/t.

Since the light's speed is constant, and it had to travel a longer distance to reach me, you see me as moving slower through time while I see you as moving faster.

Pretty cool.

Since light travels at a constant speed, it would be impossible to travel faster than light, since that would mean moving slower than 0 through time.

***** u dum