relativity frame of reference non inertial frame of reference
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Feb 27, 2025
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About This Presentation
Relativity is a theory in physics that describes the relationship between space, time, and energy. It's a fundamental principle of modern physics that includes special relativity and general relativity.
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Added: Feb 27, 2025
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Presented by Dr.M.Reka devi Assistant Professor Of Physics Relativity
Relativity Relativity is a theorem formulated by Albert Einstein, which states that space and time are relative, and all motion must be relative to a frame of reference. Frame of reference Frame of reference is a way to observe and measure objects positions and movements. It acts like a coordinate system . It makes it clear if something is moving fast, slow, or at rest.
For example, if you are sitting in a moving train and throw a ball up, it might seem to go straight up and down to you. However, to someone standing outside the train, the ball appears to follow a curved path. Both observations are correct but from different frames of reference.
Features of a frame of reference: It provides a space or area where observations are made. It offers a specific viewpoint from which measurements are taken. Most frames of reference use a coordinate system to pinpoint exact locations. It helps in understanding motion relative to the observer’s position and condition. Types of Frames of Reference Inertial Frames of Reference Non-inertial Frames of Reference
Inertial frame of reference : An inertial frame of reference is one in which an object remains at rest or moves at a constant velocity unless acted upon by an external force. This type of frame follows Newton’s first law of motion. Example: A car moving at a constant speed on a straight road.
Non-inertial Frames of Reference: A non-inertial frame of reference is one where the observer is undergoing acceleration. This can make objects appear to move in unusual ways due to the effects of the acceleration. This frame of reference is useful for analyzing situations where forces, like friction and gravity, interact in ways that cause acceleration. Example: A car accelerating or decelerating, or moving in a curved path.
In relativity, the transformation between multiple inertial frames is the Lorentz transformation. In Newtonian mechanics, it is replaced by a Galilean transformation. Lorentz transformation is the relationship between two different coordinate frames that move at a constant velocity and are relative to each other.
Galilean transformation is applied to convert the coordinates of two frames of reference, which vary only by constant relative motion within the constraints of classical physics.