4 ms·
As always, soon we will discover another way, or there will be a different theory that will allow bending the rules.
by BartBoch 7y ago
As always, soon we will discover another way, or there will be a different theory that will allow bending the rules.
- lupire 7y agoNot always. Faster than light travel has never been bent.
- BartBoch 7y agoWell, we are able to research FTL for only a few decades. Give it a few more due to complexity. Few ages ago people thought that the world is flat... Also, there are theories of FTL: https://en.wikipedia.org/wiki/Faster-than-light https://en.wikipedia.org/wiki/Faster-than-light
- smoyer 7y agoAnd suddenly people think the earth is flat again ... we need to keep science more relatable to the general population and that starts with being realistic. I'm not arguing with your idea ... just that it should start with a caveat ... "there are no current theories that support FTL but we're hoping ..."
- psionides 7y agoThey didn't really, that's a common misconception: https://en.wikipedia.org/wiki/Myth_of_the_flat_Earth https://en.wikipedia.org/wiki/Myth_of_the_flat_Earth
- earenndil 7y ago> Few ages ago people thought that the world is flat... Ah, no they didn't. Scientific consensus has been the earth is round for thousands of years.
- craftinator 7y agoAs the word 'age' is used in the original comment, a likely synonym is 'millenia', so you are in aggreement with the poster.
- jcoffland 7y agoShadows can move faster than light.
- saagarjha 7y agoShadows are an abstract concept (namely, the absence of light), not a physical thing.
- smoyer 7y agoI would argue that shadows are a very physical effect.
- TotempaaltJ 7y agoThat's an interesting assertion... Why would shadows be able to move faster than light?
- virgilp 7y agoIt's perfectly correct and does not contradict physics. Think about it in the opposite direction - say you have a perfect laser, with perfect pointing ability. You pick two planets that are far away from each other but at roughly the same distance from Earth, and make an angle of 10 degrees with it; it will take you a few seconds to "move" the laser 10 degrees and thus move the spot from one planet to the other - in the process making the spot "travel" millions of light years in a few seconds. However, the light itself has not traveled at faster-than-light speeds (it still takes a lot of years for the light from your laser pointer to reach any one of those two planets).
- jdmichal 7y agoThere's two possible interpretations here. The implication of "shadows travel faster than light" is that information about the lack of light is faster. This interpretation is false. In your thought experiment, the information of the lasers moving still only travels at speed of light, even if the actual movement took only a fraction of that time. So the "shadow" on Earth reacts at the speed of light to changes in the source. However, if the idea is that a laser that is continuously lit can "sweep" a path, such that the laser dot appears to move faster than light could travel that same path... Then of course that's trivially true. The light is traveling the radius of the arc, not the length.