To be precise, none of our probes are outside the Sun's gravity well yet, although they may still possess enough velocity to escape it, which I haven't verified.
The heliopause is where the Sun's solar winds stop from being dominant compared to the interstellar winds.
The existence of Oort's cloud extending a thousand times further than the heliopause shows that there's still a long way to go before escaping the gravity well.
It is the energy that counts. Energy is not a linear function of velocity (Ek = mv^2 / 2). That's why a crash against a wall at 100 mph is 4 times as bad as a crash at 50 mph.
From the point of view of an immobile reference frame such as the road, each car has Ek joules of energy from their speed, which must be dissipated to bring the velocities down to zero.
In a head-on crash without braking, the energy dissipates purely by folding metal and subsequently crushing bone.
If you had two similar vehicles crashing into each other at equal speeds, meaning both vehicles have equal amounts of kinetic energy and fold in an equivalent way during the crash: it's as if you had crashed against a solid wall. Imagine this as crashing in a mirror copy of your vehicle.
In other words although the two vehicles double the system's total energy, each vehicle requires exactly half of the total energy to bring their velocity down to zero: just like crashing against a wall.
There is not much one can do against a rogue vehicle speeding towards them. Perhaps the best that could be done for now is preemptive braking, which could give a chance to the hittee.
Or there may come a day where such speeding is limited by some technical authoritarian means.
I believe this clock is accurate up to ±2ns per day, not per second. In fact I would be shocked if it were per second.
Plus, this has to be understood as a random walk of time keeping. When a clock "looses" a second, it's not necessarily slower than some other reference. It may be faster.
Now, if relativity states time dilation slows clocks (from the point of view of Earth-based observers), this is something we can agree upon and take into account. This is not clock imprecision of random loss (or gain) of time. It has in fact and must be taken into account for the GPS system to work at all.
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To be precise, none of our probes are outside the Sun's gravity well yet, although they may still possess enough velocity to escape it, which I haven't verified.
The heliopause is where the Sun's solar winds stop from being dominant compared to the interstellar winds.
The existence of Oort's cloud extending a thousand times further than the heliopause shows that there's still a long way to go before escaping the gravity well.
It is the energy that counts. Energy is not a linear function of velocity (Ek = mv^2 / 2). That's why a crash against a wall at 100 mph is 4 times as bad as a crash at 50 mph.
From the point of view of an immobile reference frame such as the road, each car has Ek joules of energy from their speed, which must be dissipated to bring the velocities down to zero.
In a head-on crash without braking, the energy dissipates purely by folding metal and subsequently crushing bone.
If you had two similar vehicles crashing into each other at equal speeds, meaning both vehicles have equal amounts of kinetic energy and fold in an equivalent way during the crash: it's as if you had crashed against a solid wall. Imagine this as crashing in a mirror copy of your vehicle.
In other words although the two vehicles double the system's total energy, each vehicle requires exactly half of the total energy to bring their velocity down to zero: just like crashing against a wall.
There is not much one can do against a rogue vehicle speeding towards them. Perhaps the best that could be done for now is preemptive braking, which could give a chance to the hittee.
Or there may come a day where such speeding is limited by some technical authoritarian means.
I believe this clock is accurate up to ±2ns per day, not per second. In fact I would be shocked if it were per second.
Plus, this has to be understood as a random walk of time keeping. When a clock "looses" a second, it's not necessarily slower than some other reference. It may be faster.
Now, if relativity states time dilation slows clocks (from the point of view of Earth-based observers), this is something we can agree upon and take into account. This is not clock imprecision of random loss (or gain) of time. It has in fact and must be taken into account for the GPS system to work at all.
See: https://physics.stackexchange....