What is the significance of finding the Grand Unified Theory?
Finding the unified theory might be able to further explain phenomena that aren’t currently understood such as: dark matter, supersymmetric partner particles, antimatter asymmetry and magnetic monopoles³.
https://ysjournal.com/physics/how-close ... ed-theory/
Special Relativity:
Satellites in the GPS constellation are orbiting the Earth at high speeds relative to observers on the ground. According to Einstein's theory of special relativity, time dilation occurs when an object is moving at a significant fraction of the speed of light. This means that time passes more slowly for an object in motion relative to a stationary observer. In the case of GPS satellites, their high velocities cause their onboard atomic clocks to tick at a slightly slower rate compared to clocks on Earth's surface.
General Relativity:
In addition to the effects of special relativity, general relativity also comes into play due to the difference in gravitational potential between the satellites and the Earth's surface. According to general relativity, time passes more slowly in stronger gravitational fields. This means that the weaker gravitational field experienced by the satellites in orbit causes their clocks to tick faster than clocks on the Earth's surface.
Combining these two effects, the onboard clocks of the GPS satellites tick at a different rate than clocks on the Earth's surface due to their relative velocities and the weaker gravitational field they experience. If these relativistic effects were not taken into account, the GPS system's accuracy would degrade over time, leading to position errors.
To ensure accurate GPS positioning, the satellite clocks are regularly corrected to match the time as measured by reference clocks on the ground. The GPS system's ground control segment monitors the clocks on the satellites and applies appropriate corrections based on the predicted effects of both special relativity and general relativity. The corrections are then transmitted to GPS receivers, which use this information to adjust for the relativistic effects when calculating positions.
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