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BkBkBk
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i was thinking,C is the maximum speed something can travel through space,in there a minimum,and is this absoloute zero?
Edi said:Something like Planck's length divided by Planck's time ? As going slower than that would mean standing still.
Edi said:Can you please direct me to the thread?
minimum distance divided by minimum time is max speed... (??)
Edi said:Can you please direct me to the thread?
minimum distance divided by minimum time is max speed... (??)
Why not? In our reference frame it is certainly and specifically at rest.BkBkBk said:we can define it as 0 relative to us,but its not specifically "at rest" is it,
That has nothing to do with relativity, that is quantum mechanics. The uncertainty principle states that [itex]\Delta x \, \Delta p = \hbar/2[/itex]. So for a macroscopic object like a 70kg human body, if we were to measure it to be "at rest" to within 1 picometer/millenium then the most accurately we could know the position is:BkBkBk said:and what i was wondering is,even though it it isn't moving relative to us,there is uncertainty in its position,so is there a minimum we can define it to be,(or am i wrong in saying that there is uncertainty,is that only a microscopic phenomenon,or does it apply to macroscopic objects aswell?)
Yes, the uncertainty principle always applies, there is no barrier between the micro and macroscopic world. The point was that even though it always applies, it is not always important.BkBkBk said:one thing,though, you've said "That has nothing to do with relativity" but then gone on to give me an example of a macroscopic object, I am a little confused as to whether we can actually apply the uncertainty principle to macroscopic objects?or is that still a question of where the barrier lies between the micro and macroscopic world?
Minimum speed in relativity refers to the concept in Einstein's theory of special relativity that states that the speed of light (c) is the maximum speed at which any object or information can travel in the universe. This means that no object can travel faster than the speed of light.
The speed of light is considered the minimum speed in relativity because it is a fundamental constant in the universe and is the same for all observers, regardless of their relative motion. This means that no matter how fast an observer is moving, they will always measure the speed of light to be the same.
The concept of minimum speed in relativity has far-reaching implications in our understanding of the universe. It forms the basis for many other principles, such as time dilation, length contraction, and the equivalence of mass and energy (E=mc²). It also explains how the laws of physics are the same for all observers, regardless of their relative motion.
According to the theory of special relativity, nothing can travel faster than the speed of light. This is because as an object approaches the speed of light, it would require an infinite amount of energy to accelerate it further. Thus, the speed of light remains the universal speed limit.
The concept of minimum speed in relativity has a significant impact on space travel. It means that even with advanced technology, we cannot travel faster than the speed of light. This imposes limitations on our ability to explore the universe, as the distance between celestial objects is vast. Scientists continue to study and theorize about potential ways to circumvent this limitation, such as using wormholes or warp drives.