# A wrong statement regarding SR.

• misogynisticfeminist
In summary, the conversation is about a statement made by a friend stating that all objects can be considered immovable relative to the speed of light. However, there is a nagging feeling that this may be incorrect and the statement is ambiguous. The conversation also brings up the assumption that velocities add algebraically in Special Relativity, but in reality, the SR velocity-addition formula must be used.
misogynisticfeminist
I've had a friend who said this "However, all objects can be considered immovable relative to the speed c, since the speed remains constant relative to all objects and so it seems like all objects remain stationary comparing with this speed."

There's a nagging feeling at the back of my head that this is wrong, but can anyone tell me why? Or is this statement right?

This statement is ambiguous. What does it mean for an object to be stationary with respect to a speed ?

That is llike sayiing that you have no money because your money is negligible compared to Bill Gates's.

The statement also seems to implicitly assume that velocities add algebraically in SR. They don't, one must use the SR velocity-addition formula.

## 1. What is SR?

SR stands for Special Relativity, which is a theory in physics that explains the relationship between space and time. It was developed by Albert Einstein in 1905 and is one of the two pillars of modern physics, along with General Relativity.

## 2. What is a wrong statement regarding SR?

A wrong statement regarding SR could be that it only applies to objects moving at speeds close to the speed of light. In reality, SR applies to all objects in motion, regardless of their speed.

## 3. Why is it important to understand SR?

Understanding SR is important because it has drastically changed our understanding of space and time, and has had numerous practical applications in fields such as physics, engineering, and technology. It also serves as the foundation for many other theories in modern physics.

## 4. Can you provide an example of how SR has been applied in real life?

One example of how SR has been applied in real life is in the development of GPS technology. The satellites in the GPS system use precise atomic clocks that are corrected for the effects of SR, as the satellites are moving at high speeds relative to the Earth's surface.

## 5. Is SR a proven theory?

Yes, SR has been extensively tested and has consistently been confirmed through various experiments and observations. It is considered a key cornerstone of modern physics and has withstood the test of time since its development over a century ago.

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