Answer:
The theory of relativity originated from Albert Einstein, first in 1905 with his paper on special relativity and then with his work on general relativity from 1907 to 1915. Relativity is a mathematical model that accurately describes the energy of matter, gravity and much more. Some of the strange concepts to arise out of relativity are:
the notion of spacetime where three-dimensional space and time are merged together
a speed limit that nothing can go faster than the speed of light
the mass of an object increases as its speed increases – referred to as relativistic mass
the length of an object decreases as its speed increases – referred to as length contraction
the clock (time) of an object slows as its speed increases – referred to as time dilation
Relativistic mass, length contraction and time dilation are hardly noticeable at low speeds, but at relativistic speeds closer to the speed of light, they become very apparent.
gravity warping space time
Explanation:
Most of the strange cases in relativity can be explained by the principle that longitudinal waves travel the universe and are reflected off particles (wave centers). An object, which consists of particles, experiences the Doppler effect. In the example below, the radar source on the left sees a different frequency/wavelength of waves when reflected off the moving plane.
Explanation:
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