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Pjpic
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Is the inertial frame of reference the same thing as space time?
If the term "reference frame" is dropped, is inertia the same as spacetime?Nugatory said:No. Reference frames are to spacetime as latitude and longitude line are to the surface of the earth: The surface of the Earth is there and we can move across it as we please; the latitude and longitude lines are just conventions for attaching numeric labels to points on that surface.
Pjpic said:If the term "reference frame" is dropped, is inertia the same as spacetime?
Nugatory said:No. Inertia is something completely different - it refers to an object's tendency to keep moving in a straight line if you apply no external forces to it.
No it would not be considered a change in inertia. A change in inertia would be if it were NOT following the natural "curve" of space time.Pjpic said:When star light bends around galaxy would it not be considered a change in inertia because the light is following the natural curve of space?
An inertial frame of reference is a coordinate system in which Newton's laws of motion hold true. In other words, an object at rest will remain at rest, and an object in motion will continue moving in a straight line at a constant speed, unless acted upon by an external force. This concept is essential in understanding the motion of objects in space.
Spacetime is a mathematical model that combines the three dimensions of space and the one dimension of time into a four-dimensional continuum. It is used to describe the physical universe and the relationship between space and time.
Inertial frames of reference are used to describe the motion of objects in space, while spacetime is used to describe the overall structure of the universe. In Einstein's theory of relativity, the laws of physics are the same in all inertial frames of reference, and the concept of spacetime is used to explain how gravity affects the motion of objects in these frames.
Yes, an object can be in an inertial frame of reference and spacetime at the same time. In fact, all objects in the universe exist within both an inertial frame of reference and spacetime. However, the motion of an object in an inertial frame of reference may be affected by the curvature of spacetime caused by gravity.
The concept of inertial frames of reference and spacetime is important in physics because it helps us understand the fundamental laws of motion and how gravity affects the motion of objects in the universe. It also plays a crucial role in modern theories such as relativity and quantum mechanics.