Is time runs faster at the top of a building or at the bottom ?

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Discussion Overview

The discussion revolves around the concept of time dilation, particularly in the context of gravitational effects experienced at different heights, such as the top and bottom of a building. Participants explore the implications of general relativity and how time is perceived differently based on relative motion and gravitational influence.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants argue that time does not run faster or slower but passes consistently, while others introduce the concept of time dilation as described in relativity.
  • A participant mentions that a clock at the bottom of a building will appear to run slower compared to a clock at the top due to gravitational redshift.
  • There is a discussion about the difference between perceived time and actual time, with references to how time dilation affects moving clocks and decay rates of particles like muons.
  • Experimental verification of time dilation is cited, including references to the Pound-Rebka experiment and the use of cesium clocks in airplanes compared to those on the ground.
  • Some participants express confusion about the relevance of the building height in the context of time dilation.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the nature of time and its measurement, with multiple competing views on how time is experienced and the implications of time dilation. The discussion remains unresolved regarding the specifics of gravitational effects on time at different heights.

Contextual Notes

Some statements reflect assumptions about the nature of time and measurement, and there are unresolved questions about the relationship between perceived time and actual time as influenced by relativistic effects.

Marwan_Ahmed
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:confused:
Is time runs faster at the top of a building or at the bottom...?
 
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what do you mean time runs faster?
Time neither runs faster nor slower..but passes by constantly.
 


No my dear
I'm talking about time dilatation
Relativity
General Relativity
Time dilate
time is like a river not like an arrow
 


Okay..
Anyway, Time does not run fast or slow...it is always same unless you increase the movement of gear wheel in the watch.
But you may feel it runs slow at relativistic speed..
But why did you tell about building top and bottom..?
 


A clock at the bottom of a building will be seen running slow according to a clock at the top. The clock at the bottom is said to be gravitationally redshifted.
 


Rajini said:
Okay..
Anyway, Time does not run fast or slow...it is always same unless you increase the movement of gear wheel in the watch.
But you may feel it runs slow at relativistic speed..
But why did you tell about building top and bottom..?
So what's the difference between "feel it run slower" and have it actually run slower? The proper time as measured on the watch of a person at rest with respect to an event will always
tick faster than a the watch of a person moving relative to this event. It has nothing to do with mechanics. Even the 'internal clocks' of muons that tell them when to decay are affected by time dilation.
 


Yes,
you may feel that time goes slow or fast...But it doent in reality..
Anyway a watch attached to the object (you are measuring time w.r.t. this object) gives the right value..
BUT WHAT IS THIS:
But why did you tell about building top and bottom..?
 


Yes,
you may feel that time goes slow or fast...But it doent in reality..
Anyway a watch attached to the object (you are measuring time w.r.t. this object) gives the right value..
BUT WHAT IS THIS:
But why did you tell about building top and bottom..?
 


Rajini said:
you may feel that time goes slow or fast...But it doent in reality..
Yes, it does. It's called time dilation. It has been experimentally verified.
 
  • #10


bapowell said:
Yes, it does. It's called time dilation. It has been experimentally verified.

@Rajini: ...A very long time ago... Some clever lads took a cesium clock in an airplane and compared it to another on the ground. They found a measurable difference due to gravitational and (regular?) TD/DA. You need to study Gravitational Time Dilation.
 
  • #12


Ahhh... you're good.
 
  • #13


Hmm,
verified by Mössbauer effect!
 

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